2021 Chevrolet Express 2500 Electrical Switch & Relay Parts

This table covers the A/C Clutch 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. Read more

3 A/C Clutch Switch parts are listed for the 2021 Chevrolet Express 2500, from UAC, FOUR SEASONS and GPD. All of them fit every engine offered in the 2021 Express 2500.

In the Economy grade, UAC supplies 1 part: the catalog's value-priced group. A representative part number is UAC SW10082C.

The Standard Replacement section lists 2 options from FOUR SEASONS and GPD — built to original-equipment specification. FOUR SEASONS 37308 is listed in this group.

Listed part numbers: UAC SW10082C, FOUR SEASONS 37308 and GPD 1711456.

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. Read more

This group shows a single part: FOUR SEASONS 36141.

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. Read more

6 A/C Refrigerant Pressure Switch parts for the 2021 Chevrolet Express 2500 come from 4 brands — GM GENUINE, UAC, FOUR SEASONS and 1 other brand. The "Popular" part is FOUR SEASONS 20915. Every part fits all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8).

This group includes FOUR SEASONS 20915, GM GENUINE 1550618 and GM GENUINE 1551388 and the remaining parts above.

This table covers the relays that control the Auxiliary Battery 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 12135194.

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. Read more

This group shows a single part: WELLS 1R3844.

This table covers the Blower 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. Read more

This group shows a single part: GM GENUINE 86516210.

This table covers the pedal-mounted switch that turns on the brake 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. Read more

This group shows a single part: VEMO V51730196.

This table covers the Brake Pressure 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 10218778.

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. Read more

2 Cruise Control Switch parts are listed for the 2021 Chevrolet Express 2500, from GM GENUINE and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Express 2500.

Part numbers include GM GENUINE D1957E and STANDARD MOTOR PRODUCTS DS2156.

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. Read more

3 Dimmer Switch parts are listed for the 2021 Chevrolet Express 2500, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2021 Express 2500.

Listed part numbers: ROSTRA 640123, STANDARD MOTOR PRODUCTS CBS1945 and WELLS 1S11511.

This table covers the Door Jamb 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. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 2500. All of them fit every engine offered in the 2021 Express 2500.

This group includes GM GENUINE D6068 and GM GENUINE 15676080.

This table covers the Door Lock 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. Read more

2 Door Lock Switch parts for the 2021 Chevrolet Express 2500 come from GM GENUINE. Every part fits all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8).

Part numbers include GM GENUINE 15867074 and GM GENUINE D1415G.

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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 15947841.

This table covers the Hands Free Calling 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 22955426.

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. Read more

2 Hazard Warning Switch parts are listed for the 2021 Chevrolet Express 2500, from ROSTRA and WELLS. All of them fit every engine offered in the 2021 Express 2500.

Listed part numbers: ROSTRA 640123 and WELLS 1S11511.

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. Read more

7 Headlamp Switch parts are listed for the 2021 Chevrolet Express 2500, from DORMAN, BWD/NIEHOFF, VEMO and 4 other brands. DORMAN 920053 carries the "Popular" badge. All of them fit every engine offered in the 2021 Express 2500.

Economy: 3 parts, from DORMAN, BWD/NIEHOFF and VEMO. A representative part number is DORMAN 920053.

The Standard Replacement section: 4 options from GM GENUINE, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand. GM GENUINE 84948801 is listed in this group.

Part numbers include DORMAN 920053, BWD/NIEHOFF S16145 and VEMO V51730130, among others listed above.

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. Read more

2 Ignition Starter Switch parts are listed for the 2021 Chevrolet Express 2500, from GM GENUINE and WELLS. All of them fit every engine offered in the 2021 Express 2500.

Part numbers include GM GENUINE 85619198 and WELLS 1S16361.

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. Read more

2 Instrument Panel Dimmer Switch parts for the 2021 Chevrolet Express 2500 come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include STANDARD MOTOR PRODUCTS CBS1446 and WELLS 1S8827.

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. Read more

This group shows a single part: VEMO V57730002.

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. Read more

7 Oil Pressure Sender / Switch parts for the 2021 Chevrolet Express 2500 come from 7 brands — DORMAN, HOLSTEIN, UNITED MOTOR PRODUCTS and 4 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PS623. 5 parts fit every engine; the other 2 are engine-specific.

The Economy section: 4 options from DORMAN, HOLSTEIN, UNITED MOTOR PRODUCTS and 1 other brand. DORMAN 926397 is listed in this group.

Standard Replacement: 3 parts, from STANDARD MOTOR PRODUCTS, WELLS and GM GENUINE. A representative part number is STANDARD MOTOR PRODUCTS PS623.

This group includes STANDARD MOTOR PRODUCTS PS623, DORMAN 926397 and HOLSTEIN 2OPS0020 and the remaining parts above.

This table covers the Outside Mirror 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 20945027.

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. Read more

This group shows a single part: GM GENUINE 15045983.

This table covers the Passenger Air Bag Disable 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. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Express 2500. All of them fit every engine offered in the 2021 Express 2500.

Part numbers include GM GENUINE 23176154 and GM GENUINE 23176155.

This table covers the Power Brake Booster 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 84190381.

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. Read more

8 Power Window Switch parts for the 2021 Chevrolet Express 2500 come from 5 brands — GM GENUINE, STANDARD MOTOR PRODUCTS, WELLS and 2 other brands. The "Popular" part is GM GENUINE 84806723. Every part fits all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8).

The Economy section: 2 options from DORMAN and SKP. DORMAN 901232 is listed in this group.

Standard Replacement: 6 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS. A representative part number is GM GENUINE 84806723.

Part numbers include GM GENUINE 84806723, DORMAN 901232 and SKP SKDWS217, among others listed above.

This table covers the Steering Wheel Audio 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. Read more

2 Steering Wheel Audio Control Switch parts for the 2021 Chevrolet Express 2500 come from 2 brands — GM GENUINE and WELLS. Every part fits all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8).

This group includes GM GENUINE 25851951 and WELLS 1S16637.

This table covers the Tow 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. Read more

One part is listed for the 2021 Chevrolet Express 2500 — GM GENUINE 15860532.

This table covers the Traction / Stability 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. Read more

This group shows a single part: GM GENUINE 20929489.

This table covers the Transmission-Automatic Fluid Pressure 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. Read more

This group shows a single part: TRANSGO PSR5.

This table covers the Transmission-Automatic Manual Shift Shaft Position 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. Read more

2 Transmission-Automatic Manual Shift Shaft Position Switch parts for the 2021 Chevrolet Express 2500 come from GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: GM GENUINE 24258550 and GM GENUINE 24042166.

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. Read more

6 Turn Signal Switch parts for the 2021 Chevrolet Express 2500 come from 6 brands — BWD/NIEHOFF, VEMO, GM GENUINE and 3 other brands. The "Popular" part is GM GENUINE D811C. Every part fits all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8).

The Economy section: 2 options from BWD/NIEHOFF and VEMO. BWD/NIEHOFF S16145 is listed in this group.

Standard Replacement: 4 parts, from GM GENUINE, WELLS, ROSTRA and 1 other brand. A representative part number is GM GENUINE D811C.

Part numbers include GM GENUINE D811C, BWD/NIEHOFF S16145 and VEMO V51730181, among others listed above.

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. Read more

4 Wiper / Washer Switch parts are listed for the 2021 Chevrolet Express 2500, from BWD/NIEHOFF, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand. All of them fit every engine offered in the 2021 Express 2500.

Economy: 1 part, from BWD/NIEHOFF. A representative part number is BWD/NIEHOFF S16145.

The Standard Replacement section: 3 options from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. ROSTRA 640123 is listed in this group.

Part numbers include BWD/NIEHOFF S16145, ROSTRA 640123 and STANDARD MOTOR PRODUCTS CBS1945, among others listed above.