The 2019 Buick Cascada has 60 electrical switch & relay parts with verified fitment on this page — 22 part types and 14 brands, covering the 1.6L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2019 Buick Cascada, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 17 parts of the 60 listed are Oil Pressure Sender / Switch (7 parts), Radiator Fan Relay (5 parts) and Turn Signal Switch (5 parts). The other 19 part types cover the remaining 43 parts.
Every part on this page is matched to the 1.6L L4 Turbocharged — the only engine offered in the 2019 Buick Cascada.
The most listed brands for 2019 Buick Cascada electrical switch & relay parts are GM GENUINE (25 parts), WELLS (12 parts) and STANDARD MOTOR PRODUCTS (7 parts), plus 11 more brands. Quality grades include Standard Replacement and Economy.
4 parts on this 2019 Buick Cascada page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS PS623 (Oil Pressure Sender / Switch) and GM GENUINE 1551279 (Radiator Fan Relay). Click any part number to see every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 20915 | 🇺🇸 US | Pressure Switch | View on Amazon |
| GM GENUINE | 1551343 | 🇺🇸 US 🇨🇦 CA | without Circuit0.0035 KG | View on Amazon |
| UAC | SW10093C | 🇺🇸 US | Pressure Transducer | View on Amazon |
| WELLS | 1S8929 | 🇺🇸 US | 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.
4 A/C Refrigerant Pressure Switch parts for the 2019 Buick Cascada come from 4 brands — FOUR SEASONS, GM GENUINE, UAC and 1 other brand.
Listed part numbers: FOUR SEASONS 20915, GM GENUINE 1551343 and UAC SW10093C, plus the other parts above.
Cruise Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13352971 | 🇺🇸 US 🇨🇦 CA | Except Lane Departure Warning Indicator (UFL)Cruise Control (K34), Leather Steering Wheel (N34) | View on Amazon |
| GM GENUINE | 13496970 | 🇺🇸 US 🇨🇦 CA | Fits Cruise Control (K34), Leather Steering Wheel (N34), Forward Collision Alert (UEU) | 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.
GM GENUINE supplies both parts for the 2019 Buick Cascada.
This group includes GM GENUINE 13352971 and GM GENUINE 13496970.
Defroster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13468934 | 🇺🇸 US 🇨🇦 CA | 4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly | View on Amazon |
| GM GENUINE | 13598347 | 🇺🇸 US 🇨🇦 CA | GrayElectric ISO Mini, Single Pole Single Throw | View on Amazon |
| GM GENUINE | 84749906 | 🇺🇸 US 🇨🇦 CA | 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.
3 Defroster Relay parts for the 2019 Buick Cascada come from GM GENUINE.
This group includes GM GENUINE 13468934, GM GENUINE 13598347 and GM GENUINE 84749906.
Diesel Fuel Heater Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13468934 | 🇺🇸 US 🇨🇦 CA | 4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly | View on Amazon |
| GM GENUINE | 13598347 | 🇺🇸 US 🇨🇦 CA | GrayElectric ISO Mini, Single Pole Single Throw | View on Amazon |
This table covers the relays that control the Diesel Fuel Heater 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.
GM GENUINE supplies both parts for the 2019 Buick Cascada.
Listed part numbers: GM GENUINE 13468934 and GM GENUINE 13598347.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | CBS2259 | 🇺🇸 US | Black | View on Amazon |
| WELLS | 1S11462 | 🇺🇸 US | Indicator Markings Color: White | 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.
2 Dimmer Switch parts are listed for the 2019 Buick Cascada, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS CBS2259 and WELLS 1S11462.
Driver Information Display Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S11462 | 🇺🇸 US | Indicator Markings Color: White | View on Amazon |
This table covers the Driver Information Display 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 2019 Buick Cascada — WELLS 1S11462.
Engine Control Module Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13468934 | 🇺🇸 US 🇨🇦 CA | 4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly | 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.
One part is listed for the 2019 Buick Cascada — GM GENUINE 13468934.
Fog / Driving Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S16956 | 🇺🇸 US | Black | 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.
One part is listed for the 2019 Buick Cascada — WELLS 1S16956.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13500113 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| VEMO | V30710036 | 🇺🇸 US | 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.
2 Fuel Pump / Circuit Opening Relay parts for the 2019 Buick Cascada come from 2 brands — GM GENUINE and VEMO.
Part numbers include GM GENUINE 13500113 and VEMO V30710036.
Hazard Warning Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S17849 | 🇺🇸 US | View on Amazon |
This table covers the Hazard Warning 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 2019 Buick Cascada — WELLS 1S17849.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13292028 | 🇺🇸 US 🇨🇦 CA | with Front Fog Lamps (T3U) | View on Amazon |
| GM GENUINE | 13411412 | 🇺🇸 US 🇨🇦 CA | Left Hand Drive (LHD), Auto Headlamp Leveling System (TR7), Tunnel Detection Auto On-Off Headlamps Control (TTW), Auto On / Off Headlamps Control (T83)Value Added Cockpit (VRG) | View on Amazon |
| WELLS | 1S16956 | 🇺🇸 US | with Fog LightsBlack | 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.
3 Headlamp Switch parts are listed for the 2019 Buick Cascada, from GM GENUINE and WELLS.
Listed part numbers: GM GENUINE 13292028, GM GENUINE 13411412 and WELLS 1S16956.
Ignition Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13468934 | 🇺🇸 US 🇨🇦 CA | 4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly | View on Amazon |
| GM GENUINE | 13500114 | 🇺🇸 US 🇨🇦 CA | Gray35AMP | View on Amazon |
| GM GENUINE | 13598347 | 🇺🇸 US 🇨🇦 CA | GrayElectric ISO Mini, Single Pole Single Throw | View on Amazon |
| GM GENUINE | 13361777 | 🇺🇸 US 🇨🇦 CA | 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.
GM GENUINE supplies the 4 Ignition Relay parts for the 2019 Buick Cascada.
This group includes GM GENUINE 13468934, GM GENUINE 13500114 and GM GENUINE 13598347 and the remaining parts above.
Ignition Starter Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V51800018 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 23276089 | 🇺🇸 US 🇨🇦 CA | No Back LightIgnition Switch | View on Amazon |
| ROSTRA | 630079 | 🇺🇸 US | View on Amazon | |
| WELLS | 1S12007 | 🇺🇸 US | 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.
4 Ignition Starter Switch parts are listed for the 2019 Buick Cascada, from VEMO, GM GENUINE, ROSTRA and 1 other brand.
In the Economy grade, VEMO supplies 1 part: the catalog's value-priced group. A representative part number is VEMO V51800018.
The Standard Replacement section lists 3 options from GM GENUINE, ROSTRA and WELLS — built to original-equipment specification. GM GENUINE 23276089 is listed in this group.
Listed part numbers: VEMO V51800018, GM GENUINE 23276089 and ROSTRA 630079, plus the other parts above.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 926397 | 🇺🇸 US | 3 Way with Leadswith Flat Connector | View on Amazon |
| HOLSTEIN | 2OPS0020 | 🇺🇸 US | with Light | View on Amazon |
| UNITED MOTOR PRODUCTS | OPS322 | 🇺🇸 US | with Light | View on Amazon |
| WALKER PRODUCTS | 2561004 | 🇺🇸 US | Includes Seal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PS623 | 🇺🇸 US | Connector Shape: Rectangle, OvalSensor Only | View on Amazon |
| WELLS Popular | 1S12693 | 🇺🇸 US | Connector Gender: Female | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 1815461 | 🇺🇸 US | with Flat 3 Pin Connector | 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.
7 Oil Pressure Sender / Switch parts for the 2019 Buick Cascada come from 7 brands — DORMAN, HOLSTEIN, UNITED MOTOR PRODUCTS and 4 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PS623.
The Economy section: 4 options from DORMAN, HOLSTEIN, UNITED MOTOR PRODUCTS and 1 other brand. DORMAN 926397 is listed in this group.
Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS and WELLS. A representative part number is STANDARD MOTOR PRODUCTS PS623.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include STANDARD MOTOR PRODUCTS PS623, DORMAN 926397 and HOLSTEIN 2OPS0020, among others listed above.
Parking Aid Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13288076 | 🇺🇸 US 🇨🇦 CA | Park Assist with Indicator Sensor (UD5), Rear Parking Assist/Obstacle Detection Sensor (UD7), Lane Departure Warning Indicator (UFL) | View on Amazon |
This table covers the Parking Aid 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.
This group shows a single part: GM GENUINE 13288076.
Power Seat Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA | GM1322316 | 🇺🇸 US | Front Left8 Way Adjustment | View on Amazon |
| DORMAN | 901271 | 🇺🇸 US | Front Left8 Way Adjustment | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 662584 | 🇺🇸 US | Front Left8 Way Adjustment | View on Amazon |
| STANDARD MOTOR PRODUCTS | PSW149 | 🇺🇸 US | 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.
4 Power Seat Switch parts are listed for the 2019 Buick Cascada, from AUTOTECNICA, DORMAN, ROSTRA and 1 other brand.
Economy: 2 parts, from AUTOTECNICA and DORMAN. A representative part number is AUTOTECNICA GM1322316.
The Standard Replacement section: 2 options from ROSTRA and STANDARD MOTOR PRODUCTS. ROSTRA 662584 is listed in this group.
Part numbers include AUTOTECNICA GM1322316, DORMAN 901271 and ROSTRA 662584, among others listed above.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13398365 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| WELLS | 1S15712 | 🇺🇸 US | Front Right | View on Amazon |
| WELLS | 1S15729 | 🇺🇸 US | Front Left | 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.
3 Power Window Switch parts for the 2019 Buick Cascada come from 2 brands — WELLS and GM GENUINE.
This group includes GM GENUINE 13398365, WELLS 1S15712 and WELLS 1S15729.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular | 1551279 | 🇺🇸 US 🇨🇦 CA | Gray950 ISO Power Mini Relay | View on Amazon |
| GM GENUINE | 13468935 | 🇺🇸 US 🇨🇦 CA | Electronic, 5 BladeElectronic Relay ISO Mini SPDT | View on Amazon |
| GM GENUINE | 13598349 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY255 | 🇺🇸 US | Amperage Rating: 70 AContinuous Duty: YES | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY121 | 🇺🇸 US | Functions: Air Condition Control Relayblack | 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.
5 Radiator Fan Relay parts are listed for the 2019 Buick Cascada, from GM GENUINE and STANDARD MOTOR PRODUCTS. GM GENUINE 1551279 carries the "Popular" badge.
Listed part numbers: GM GENUINE 1551279, GM GENUINE 13468935 and GM GENUINE 13598349, plus the other parts above.
Seat Heater Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | PSW149 | 🇺🇸 US 🇨🇦 CA | Fits 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.
One part is listed for the 2019 Buick Cascada — ULTRA-POWER PSW149.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 13500114 | 🇺🇸 US 🇨🇦 CA | Gray35AMP | 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.
One part is listed for the 2019 Buick Cascada — GM GENUINE 13500114.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V51730142 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular | 1S11462 | 🇺🇸 US | Indicator Markings Color: White | View on Amazon |
| GM GENUINE | 84545369 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS | CBS2259 | 🇺🇸 US | Black | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V40802444 | 🇺🇸 US | Number of Pins 12 | 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 for the 2019 Buick Cascada come from 4 brands — VEMO, WELLS, GM GENUINE and 1 other brand. The "Popular" part is WELLS 1S11462.
The Economy section: 1 option from VEMO. VEMO V51730142 is listed in this group.
Standard Replacement: 3 parts, from WELLS, GM GENUINE and STANDARD MOTOR PRODUCTS. A representative part number is WELLS 1S11462.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include WELLS 1S11462, VEMO V51730142 and GM GENUINE 84545369, among others listed above.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 95433824 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS | WP484 | 🇺🇸 US | View on Amazon | |
| WELLS | 1S11522 | 🇺🇸 US | 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 are listed for the 2019 Buick Cascada, from GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS.
This group includes GM GENUINE 95433824, STANDARD MOTOR PRODUCTS WP484 and WELLS 1S11522.
Buying Electrical Switch & Relay Parts for a 2019 Buick Cascada
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 1.6L L4 Turbocharged engine — every part on this page is matched to it.
- 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: Oil Pressure Sender / Switch and Radiator Fan Relay .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2019 Buick Cascada?
Our catalog currently lists 60 electrical switch & relay parts for the 2019 Buick Cascada across 22 subcategories and 14 brands, covering the 1.6L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2019 Buick Cascada?
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 2019 Buick Cascada 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 2019 Buick Cascada?
Every part on this page is matched to the 1.6L L4 Turbocharged engine. 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 2019 Buick Cascada
Electrical Switch & Relay Parts for Other Buick Cascada Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.