2021 Chevrolet Silverado 2500 Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

6 Alternator / Generator parts are listed for the 2021 Chevrolet Silverado 2500, from GM GENUINE, FVP, PURE ENERGY and 1 other brand. GM GENUINE 85671415 carries the "Popular" badge.

In the New grade, GM GENUINE supplies 2 parts: brand-new units rather than rebuilt ones. A representative part number is GM GENUINE 85671415.

In the Remanufactured grade, FVP, PURE ENERGY and TERREPOWER supply 4 parts: factory-rebuilt units with new wear components. A representative part number is FVP 10394.

This group includes GM GENUINE 85671415, GM GENUINE 13563314 and FVP 10394 and the remaining parts above.

This table covers the brackets that mount the Alternator / Generator. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2021 Chevrolet Silverado 2500 — GM GENUINE 97356246.

This table covers the Alternator / Generator bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 2500.

Part numbers include GM GENUINE 12624586 and GM GENUINE 12623219.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

3 Alternator / Generator Pulley parts for the 2021 Chevrolet Silverado 2500 come from 2 brands — LITENS and CONTINENTAL.

This group includes CONTINENTAL 49903, LITENS 920112A and LITENS 920111A.

This table covers the Anti-Theft control modules. Read more

2 Anti-Theft Control Module parts for the 2021 Chevrolet Silverado 2500 come from GM GENUINE.

Listed part numbers: GM GENUINE 13516351 and GM GENUINE 13516352.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

7 Battery parts for the 2021 Chevrolet Silverado 2500 come from 6 brands — FVP, DEKA, LUCAS and 3 other brands. The "Popular" part is DEKA 9A48.

Part numbers include DEKA 9A48, LUCAS LBAGM004A and ACDELCO 48AGM, among others listed above.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

GM GENUINE supplies the 5 Battery Cable parts for the 2021 Chevrolet Silverado 2500. GM GENUINE 84794790 carries the "Popular" badge.

Listed part numbers: GM GENUINE 84794790, GM GENUINE 87866332 and GM GENUINE 84772924, plus the other parts above.

This table covers the Battery Cable Terminal ends. Read more

This group shows a single part: GM GENUINE 84335255.

This table covers the Battery Current 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

2 Battery Current Sensor parts are listed for the 2021 Chevrolet Silverado 2500, from STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS SBC111 and WELLS 5S6706.

This table covers the Battery Terminal Bolt nuts. Read more

One part is listed for the 2021 Chevrolet Silverado 2500 — GM GENUINE 11570961.

This table covers the Blind Spot Detection 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

HELLA supplies both parts for the 2021 Chevrolet Silverado 2500.

Part numbers include HELLA 013068241 and HELLA 013068041.

This table covers the body-control modules that run lighting, locks and wipers. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 2500.

This group includes GM GENUINE 13531840 and GM GENUINE 84652297.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

2 Circuit Breaker parts for the 2021 Chevrolet Silverado 2500 come from STANDARD MOTOR PRODUCTS.

This group includes STANDARD MOTOR PRODUCTS FH58 and STANDARD MOTOR PRODUCTS FH59.

This table covers the engine-control modules that run fuel, spark and emissions. Read more

One part is listed for the 2021 Chevrolet Silverado 2500 — GM GENUINE 12720006.

This table covers the horns mounted in the front of the vehicle. Read more

This group shows a single part: GM GENUINE 85130076.

This table covers the Jumper cables. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 2500.

This group includes GM GENUINE 84655051 and GM GENUINE 84735810.

This table covers the receivers that pick up the key-fob unlock signal. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 2500.

Listed part numbers: GM GENUINE 13523298 and GM GENUINE 13558725.