167 Electrical switch & relay parts are listed for the 2016 Buick Lacrosse, in 33 part types, covering both the 2.4L L4 and the 3.6L V6. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2016 Buick Lacrosse, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 42 parts of the 167 listed are Radiator Fan Relay (19 parts), Headlamp Switch (12 parts) and Instrument Panel Dimmer Switch (11 parts). The other 30 part types cover the remaining 125 parts.
The 2016 Buick Lacrosse was sold with both the 2.4L L4 and the 3.6L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
18 brands supply electrical switch & relay parts for the 2016 Buick Lacrosse, led by STANDARD MOTOR PRODUCTS (54 parts), WELLS (34 parts) and GM GENUINE (21 parts), plus 15 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2016 Buick Lacrosse. 30 parts have it, including WELLS 1R1056 (A/C Compressor Relay) and GM GENUINE 1551343 (A/C Refrigerant Pressure Switch). Each part number opens a page with every vehicle that part fits.
A/C Compressor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 3.6L V6 | 1R1056 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 25 AConnector Gender: Male | View on Amazon |
| FOUR SEASONS Fits: 3.6L V6 | 36008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4 PinCompressor Clutch Relay | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Compressor Clutch Relay | View on Amazon |
| ULTRA-POWER Fits: 3.6L V6 | 1R1056 | 🇺🇸 US 🇨🇦 CA | Air Conditioning Compressor Clutch RelayCLUTCH RELAY | View on Amazon |
This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 A/C Compressor Relay parts are listed for the 2016 Buick Lacrosse, from WELLS, FOUR SEASONS, ROSTRA and 2 other brands. WELLS 1R1056 carries the "Popular" badge.
This group includes WELLS 1R1056, FOUR SEASONS 36008 and ROSTRA 600060 and the remaining parts above.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 1551343 | 🇺🇸 US 🇨🇦 CA | without Circuit | View on Amazon |
| FOUR SEASONS Fits: 3.6L V6 | 20915 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| GPD Fits: 3.6L V6 | 1711513 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | View on Amazon |
| UAC Fits: 3.6L V6 | SW10093C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S8929 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Clutch Cycle and Fan ControlCut-Off | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 A/C Refrigerant Pressure Switch parts are listed for the 2016 Buick Lacrosse, from GM GENUINE, FOUR SEASONS, GPD and 2 other brands. GM GENUINE 1551343 carries the "Popular" badge.
Listed part numbers: GM GENUINE 1551343, FOUR SEASONS 20915 and GPD 1711513, plus the other parts above.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Fits: 3.6L V6 | RE1008C | 🇺🇸 US 🇨🇦 CA | Fits FLEX FuelLeatheror GAS | View on Amazon |
| UAC Fits: 3.6L V6 | RE0959C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits or FLEX FUELBase Modelor Base Model or Premiumor Leather or Premiumor Flex Fuel | View on Amazon |
This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
UAC supplies both parts for the 2016 Buick Lacrosse.
This group includes UAC RE1008C and UAC RE0959C.
Accessory Delay Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | D1780C | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the relays that control the Accessory Delay circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: GM GENUINE D1780C.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 13422668 | 🇺🇸 US 🇨🇦 CA | Gray4-Terminal | View on Amazon |
| HELLA Fits: 3.6L V6 | 933332571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 30 Amps4-Pin Connector | View on Amazon |
| HELLA Fits: 3.6L V6 | 933332541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4-Pin ConnectorPlug: B | View on Amazon |
| WELLS Fits: 3.6L V6 | 1R3344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Accessory Power Relay parts for the 2016 Buick Lacrosse come from 3 brands — HELLA, GM GENUINE and WELLS.
Part numbers include GM GENUINE 13422668, HELLA 933332571 and HELLA 933332541, among others listed above.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 3.6L V6 | 0986AH0115 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Glow Plug Relay | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 13500114 | 🇺🇸 US 🇨🇦 CA | Gray35AMP | View on Amazon |
| HELLA Fits: 3.6L V6 | 933332571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 30 Amps4-Pin Connector | View on Amazon |
| WELLS Fits: 3.6L V6 | 1R1056 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 25 AConnector Gender: Male | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Blower Motor Relay parts are listed for the 2016 Buick Lacrosse, from BOSCH, GM GENUINE, HELLA and 1 other brand.
Part numbers include BOSCH 0986AH0115, GM GENUINE 13500114 and HELLA 933332571, among others listed above.
Computer Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Computer Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Computer Control Relay parts are listed for the 2016 Buick Lacrosse, from ROSTRA and STANDARD MOTOR PRODUCTS.
This group includes ROSTRA 600060 and STANDARD MOTOR PRODUCTS RY1757.
Cruise Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23154421 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | CCA1367 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S15936 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Leftwith Collision Avoidance System | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S15940 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Leftwith Heated Steering Wheel | View on Amazon |
This table covers the Cruise Control switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Cruise Control Switch parts for the 2016 Buick Lacrosse come from 3 brands — WELLS, GM GENUINE and STANDARD MOTOR PRODUCTS.
This group includes GM GENUINE 23154421, STANDARD MOTOR PRODUCTS CCA1367 and WELLS 1S15936 and the remaining parts above.
Defroster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 13500114 | 🇺🇸 US 🇨🇦 CA | Gray35AMP | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600300 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: SquareTerminal Type: Blade | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY116T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-SeriesConnector Shape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY116 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Quantity: 1Mounting Bracket Included: No | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1957 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Gender: MaleMale | View on Amazon |
This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Defroster Relay parts are listed for the 2016 Buick Lacrosse, from STANDARD MOTOR PRODUCTS, GM GENUINE and ROSTRA. GM GENUINE 13500114 carries the "Popular" badge.
Listed part numbers: GM GENUINE 13500114, ROSTRA 600300 and STANDARD MOTOR PRODUCTS RY116T, plus the other parts above.
Dimmer Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SHEE-MAR Fits: 3.6L V6 | SM1241 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Menu Button On StalkOE Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | CBS1907 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Trip Odometer Switch | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | CBS2279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Trip Odometer Switch | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S11741 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Dimmer Switch parts for the 2016 Buick Lacrosse come from 3 brands — STANDARD MOTOR PRODUCTS, SHEE-MAR and WELLS.
The Economy section lists 1 option from SHEE-MAR — the catalog's value-priced group. SHEE-MAR SM1241 is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS CBS1907.
Listed part numbers: SHEE-MAR SM1241, STANDARD MOTOR PRODUCTS CBS1907 and STANDARD MOTOR PRODUCTS CBS2279, plus the other parts above.
Engine Control Module Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.6L V6 | 600300 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: SquareTerminal Type: Blade | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY116T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-SeriesConnector Shape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY116 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Quantity: 1Mounting Bracket Included: No | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1957 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Gender: MaleMale | View on Amazon |
This table covers the relays that control the Engine Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Engine Control Module Relay parts for the 2016 Buick Lacrosse come from 2 brands — STANDARD MOTOR PRODUCTS and ROSTRA.
Listed part numbers: ROSTRA 600300, STANDARD MOTOR PRODUCTS RY116T and STANDARD MOTOR PRODUCTS RY116, plus the other parts above.
Fog / Driving Lamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA | Fog Lamp Switchwith Heads-up Display (HUD) | View on Amazon |
| ULTRA-POWER Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA | Fog Lamp Switchwith Heads-up Display (HUD) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 3.6L V6 | 1S12169 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewithout Heads-Up Display (HUD) | View on Amazon |
| WELLS Popular Fits: 3.6L V6 | 1S12173 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwithout Heads-Up Display (HUD) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1613 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Heads-Up Display (HUD)with Automatic Headlights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1716 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1612 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Heads-Up Display (HUD)with Automatic Headlights | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwith Heads-Up Display (HUD) | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewith Heads-Up Display (HUD) | View on Amazon |
This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 Fog / Driving Lamp Switch parts for the 2016 Buick Lacrosse come from 3 brands — WELLS, STANDARD MOTOR PRODUCTS and ULTRA-POWER. The "Popular" part is WELLS 1S12169.
The Economy section: 2 options from ULTRA-POWER. ULTRA-POWER 1S12168 is listed in this group.
Standard Replacement: 7 parts, from WELLS and STANDARD MOTOR PRODUCTS. A representative part number is WELLS 1S12169.
Part numbers include WELLS 1S12169, ULTRA-POWER 1S12168 and ULTRA-POWER 1S12174, among others listed above.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 3.6L V6 | 933332571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 30 Amps4-Pin Connector | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 3.6L V6 | V30710036 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Body code GM69 | View on Amazon |
| WELLS Fits: 3.6L V6 | 1R3545 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Fuel Pump / Circuit Opening Relay parts are listed for the 2016 Buick Lacrosse, from HELLA, ROSTRA, STANDARD MOTOR PRODUCTS and 2 other brands. HELLA 933332571 carries the "Popular" badge.
Part numbers include HELLA 933332571, ROSTRA 600060 and STANDARD MOTOR PRODUCTS RY1757, among others listed above.
Headlamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA | with Heads-Up Display (HUD)Natural or White | View on Amazon |
| ULTRA-POWER Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA | with Heads-Up Display (HUD)Black | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | HLS1716 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| WELLS Popular Fits: 3.6L V6 | 1S12169 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewith Fog Lights | View on Amazon |
| WELLS Popular Fits: 3.6L V6 | 1S12173 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwith Fog Lights | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 09060242 | 🇺🇸 US 🇨🇦 CA | Except Front Fog Lamp (T3U), Head up Display (UV6)Auto On / Off Headlamps Control (T83), Interior Trim Color (4AA), Interior Trim Color (4EP), Interior Trim Color (43N) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1613 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Heads-Up Display (HUD)color code Cashmere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1614 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Head-Up Displaywithout Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1612 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with heads-up display (hud)with fog lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1422 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Heads-Up Display (HUD)without Fog Lights | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwith Fog Lights | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewith Fog Lights | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
12 Headlamp Switch parts for the 2016 Buick Lacrosse come from 4 brands — STANDARD MOTOR PRODUCTS, WELLS, ULTRA-POWER and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS HLS1716.
The Economy section: 2 options from ULTRA-POWER. ULTRA-POWER 1S12168 is listed in this group.
Standard Replacement: 10 parts, from STANDARD MOTOR PRODUCTS, WELLS and GM GENUINE. A representative part number is STANDARD MOTOR PRODUCTS HLS1716.
Headlamp Washer Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 13598349 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the relays that control the Headlamp Washer circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2016 Buick Lacrosse — GM GENUINE 13598349.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 3.6L V6 | 933332571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 30 Amps4-Pin Connector | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ULTRA-POWER Fits: 3.6L V6 | 1R1056 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 3.6L V6 | 1R1056 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 25 AConnector Gender: Male | View on Amazon |
This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Horn Relay parts for the 2016 Buick Lacrosse come from 5 brands — HELLA, ROSTRA, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is HELLA 933332571.
Part numbers include HELLA 933332571, ROSTRA 600060 and STANDARD MOTOR PRODUCTS RY1757, among others listed above.
Ignition Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 3.6L V6 | 1R1066 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with 5 Terminals | View on Amazon |
| ACDELCO Fits: 3.6L V6 | F1757 | 🇺🇸 US 🇨🇦 CA | GoldVoltage: 12 VDC | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 13598349 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Ignition circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Ignition Relay parts for the 2016 Buick Lacrosse come from 5 brands — WELLS, ACDELCO, GM GENUINE and 2 other brands. The "Popular" part is WELLS 1R1066.
Listed part numbers: WELLS 1R1066, ACDELCO F1757 and GM GENUINE 13598349, plus the other parts above.
Ignition Starter Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Popular Fits: 3.6L V6 | GM1317188 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 3.6L V6 | V51800018 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Body code GB69 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | US1032 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GM GENUINE Fits: 3.6L V6 | 23276089 | 🇺🇸 US 🇨🇦 CA | Base ModelNO BACK LIGHT | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 42742108 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 630079 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Column MountedKeyed Ignition Switch | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | US1357 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | US1354 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Dash Mountedwith Keyless Entry | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12007 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Type: Bolt On | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 Ignition Starter Switch parts for the 2016 Buick Lacrosse come from 6 brands — STANDARD MOTOR PRODUCTS, GM GENUINE, AUTOTECNICA and 3 other brands. The "Popular" part is AUTOTECNICA GM1317188.
The Economy section: 2 options from AUTOTECNICA and VEMO. AUTOTECNICA GM1317188 is listed in this group.
Standard Replacement: 7 parts, from STANDARD MOTOR PRODUCTS, GM GENUINE, ROSTRA and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS US1032.
Part numbers include AUTOTECNICA GM1317188, VEMO V51800018 and STANDARD MOTOR PRODUCTS US1032, among others listed above.
Instrument Panel Cluster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 39091599 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Instrument Panel Cluster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: GM GENUINE 39091599.
Instrument Panel Dimmer Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA | Panel Dimming Switchwith Heads-Up Display (HUD) | View on Amazon |
| ULTRA-POWER Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA | Panel Dimming Switchwith Heads-Up Display (HUD) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | HLS1716 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| WELLS Popular Fits: 3.6L V6 | 1S12169 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewith Fog Lights | View on Amazon |
| WELLS Popular Fits: 3.6L V6 | 1S12173 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwith Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1613 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Heads-Up Display (HUD)with Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1614 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Head-Up Displaywithout Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1612 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Heads-Up Display (HUD)with Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | HLS1422 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Heads-Up Display (HUD)without Fog Lights | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12174 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blackwith Fog Lights | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12168 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Natural or Whitewith Fog Lights | View on Amazon |
This table covers the Instrument Panel Dimmer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
11 Instrument Panel Dimmer Switch parts are listed for the 2016 Buick Lacrosse, from STANDARD MOTOR PRODUCTS, WELLS and ULTRA-POWER. STANDARD MOTOR PRODUCTS HLS1716 carries the "Popular" badge.
Economy: 2 parts, from ULTRA-POWER. A representative part number is ULTRA-POWER 1S12168.
The Standard Replacement section: 9 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS HLS1716 is listed in this group.
Neutral Safety Switch / Range Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 3.6L V6 | 511110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Popular Fits: 3.6L V6 | 670597 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | NS624 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Cablewith Bracket | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | NS678 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Bracket | View on Amazon |
| VEMO Fits: 3.6L V6 | V51730150 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 3.6L V6 | 1S12274 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
6 Neutral Safety Switch / Range Sensor parts are listed for the 2016 Buick Lacrosse, from STANDARD MOTOR PRODUCTS, DORMAN, ROSTRA and 2 other brands. DORMAN 511110 carries the "Popular" badge.
Economy: 1 part, from DORMAN. A representative part number is DORMAN 511110.
The Standard Replacement section: 5 options from STANDARD MOTOR PRODUCTS, ROSTRA, VEMO and 1 other brand. ROSTRA 670597 is listed in this group.
Listed part numbers: DORMAN 511110, ROSTRA 670597 and STANDARD MOTOR PRODUCTS NS624, plus the other parts above.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: 3.6L V6 | PS310 | 🇺🇸 US 🇨🇦 CA | Fits Oil Pressure Sender or Switchwith Lightor Oil Pressure Sender or Switch | View on Amazon |
| AUTOTECNICA Fits: 3.6L V6 | GM1317808 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: MaleMaterial: Steel / Plastic | View on Amazon |
| HOLSTEIN Fits: 3.6L V6 | 2OPS0021 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | PS310T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 3.6L V6 | OPS176 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| VEMO Fits: 3.6L V6 | V51730107 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Fits: 3.6L V6 | 2561045 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 19436253 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Popular Fits: 3.6L V6 | 1S6864 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: Female | View on Amazon |
| GPD Fits: 3.6L V6 | 1815424 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | PS310 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
11 Oil Pressure Sender / Switch parts are listed for the 2016 Buick Lacrosse, from STANDARD MOTOR PRODUCTS, ULTRA-POWER, AUTOTECNICA and 7 other brands. ULTRA-POWER PS310 carries the "Popular" badge.
Economy: 7 parts, from ULTRA-POWER, AUTOTECNICA, HOLSTEIN and 4 other brands. A representative part number is ULTRA-POWER PS310.
The Standard Replacement section: 4 options from GM GENUINE, WELLS, GPD and 1 other brand. GM GENUINE 19436253 is listed in this group.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 39229532 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2016 Buick Lacrosse — GM GENUINE 39229532.
Parking Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.6L V6 | 600060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1757 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Parking Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Parking Lamp Relay parts are listed for the 2016 Buick Lacrosse, from ROSTRA and STANDARD MOTOR PRODUCTS.
This group includes ROSTRA 600060 and STANDARD MOTOR PRODUCTS RY1757.
Power Seat Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | PSW149 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: Rectangle | View on Amazon |
This table covers the Power Seat switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: STANDARD MOTOR PRODUCTS PSW149.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SHEE-MAR Popular Fits: 3.6L V6 | SM1877 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear LeftBlack | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 3.6L V6 | 1S12396 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftBlack | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 660403 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | DWS1274 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | DWS1569 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftSilver | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12395 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front RightBlack | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12370 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearBlack | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S12369 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftArgent | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
8 Power Window Switch parts are listed for the 2016 Buick Lacrosse, from WELLS, STANDARD MOTOR PRODUCTS, SHEE-MAR and 1 other brand. SHEE-MAR SM1877 carries the "Popular" badge.
Economy: 1 part, from SHEE-MAR. A representative part number is SHEE-MAR SM1877.
The Standard Replacement section: 7 options from WELLS, STANDARD MOTOR PRODUCTS and ROSTRA. WELLS 1S12396 is listed in this group.
Part numbers include SHEE-MAR SM1877, WELLS 1S12396 and ROSTRA 660403, among others listed above.
Powertrain Control Module Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.6L V6 | 933332541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4-Pin ConnectorPlug: B | View on Amazon |
This table covers the relays that control the Powertrain Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2016 Buick Lacrosse — HELLA 933332541.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 13500113 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| HELLA Popular Fits: 3.6L V6 | 933332571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 30 Amps4-Pin Connector | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | RY116T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-SeriesConnector Shape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | RY116 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Quantity: 1Mounting Bracket Included: No | View on Amazon |
| FOUR SEASONS Fits: 3.6L V6 | 36008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4 Blade TerminalRectangular Shape | View on Amazon |
| FOUR SEASONS Fits: 3.6L V6 | 36146 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4 Blade TerminalSquare Shape | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 1551279 | 🇺🇸 US 🇨🇦 CA | Gray950 ISO Power Mini Relay | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 1551273 | 🇺🇸 US 🇨🇦 CA | 280 Micro Relay For Dry Switch, SPSTMotor Relay | View on Amazon |
| HELLA Fits: 3.6L V6 | 933332581 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black | View on Amazon |
| HELLA Fits: 3.6L V6 | 933332541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4-Pin ConnectorPlug: B | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600143 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Squarewith 4 Blade Terminals | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600245 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rectangularwith 4 Blade Pin Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY255 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 70 AContinuous Duty: YES | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY232 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 35 AConnector Gender: Male | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1957 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Gender: MaleMale | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1781 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 20 AFunctions: Multi-Function Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY121 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Air Condition Control Relayblack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1761 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rectangularwith 4 Blade Terminal | View on Amazon |
| WELLS Fits: 3.6L V6 | 1R3308 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Motor Relay | View on Amazon |
This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
19 Radiator Fan Relay parts for the 2016 Buick Lacrosse come from 6 brands — STANDARD MOTOR PRODUCTS, GM GENUINE, HELLA and 3 other brands. The "Popular" part is GM GENUINE 13500113.
Seat Heater Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 3.6L V6 | PSW149 | 🇺🇸 US 🇨🇦 CA | Seat Control SwitchPower Seat Switch | View on Amazon |
This table covers the Seat Heater switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: ULTRA-POWER PSW149.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 13500114 | 🇺🇸 US 🇨🇦 CA | Gray35AMP | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | RY302 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Multi-Function RelayTerminal Quantity: 4 | View on Amazon |
| BOSCH Fits: 3.6L V6 | 0986AH0115 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Glow Plug Relay | View on Amazon |
| ROSTRA Fits: 3.6L V6 | 600420 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY302T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-SeriesFunctions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1743 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: FlatFunctions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY451 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: RectangularFunctions: Fog Lamp Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | RY1799 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: SquareFunctions: Relay | View on Amazon |
| WELLS Fits: 3.6L V6 | 1R3344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
9 Starter Motor Control Relay parts for the 2016 Buick Lacrosse come from 5 brands — STANDARD MOTOR PRODUCTS, GM GENUINE, BOSCH and 2 other brands. The "Popular" part is GM GENUINE 13500114.
This group includes GM GENUINE 13500114, STANDARD MOTOR PRODUCTS RY302 and BOSCH 0986AH0115 and the remaining parts above.
Trunk Release Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 39091599 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 3.6L V6 | 1R3432 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Trunk Release circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Trunk Release Relay parts for the 2016 Buick Lacrosse come from 2 brands — GM GENUINE and WELLS.
This group includes GM GENUINE 39091599 and WELLS 1R3432.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SHEE-MAR Fits: 3.6L V6 | SM1241 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Menu Button On StalkOE Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 84514422 | 🇺🇸 US 🇨🇦 CA | Fits Base ModelJET BLACK | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | CBS1907 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Trip Odometer Switch | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | CBS2279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Trip Odometer Switch | View on Amazon |
| WELLS Fits: 3.6L V6 | 1S11741 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Turn Signal Switch parts are listed for the 2016 Buick Lacrosse, from STANDARD MOTOR PRODUCTS, SHEE-MAR, GM GENUINE and 1 other brand. GM GENUINE 84514422 carries the "Popular" badge.
Economy: 1 part, from SHEE-MAR. A representative part number is SHEE-MAR SM1241.
The Standard Replacement section: 4 options from STANDARD MOTOR PRODUCTS, GM GENUINE and WELLS. GM GENUINE 84514422 is listed in this group.
Part numbers include GM GENUINE 84514422, SHEE-MAR SM1241 and STANDARD MOTOR PRODUCTS CBS1907, among others listed above.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 84489119 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | WP587 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 3.6L V6 | 1S12175 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Wiper / Washer Switch parts for the 2016 Buick Lacrosse come from 3 brands — GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: GM GENUINE 84489119, STANDARD MOTOR PRODUCTS WP587 and WELLS 1S12175.
Buying Electrical Switch & Relay Parts for a 2016 Buick Lacrosse
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Every electrical switch & relay part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Radiator Fan Relay and Headlamp Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2016 Buick Lacrosse?
Our catalog currently lists 167 electrical switch & relay parts for the 2016 Buick Lacrosse across 33 subcategories and 18 brands, covering both the 2.4L L4 and the 3.6L V6. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2016 Buick Lacrosse engines?
Yes. Every electrical switch & relay part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 2016 Buick Lacrosse?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2016 Buick Lacrosse was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2016 Buick Lacrosse?
First match the engine — each row shows which engine(s) the part fits. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2016 Buick Lacrosse
Electrical Switch & Relay Parts for Other Buick Lacrosse Years
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