2021 Chevrolet Silverado 6500 HD Electrical Parts

This table covers the Alligator clips. Read more

This group shows a single part: GM GENUINE 19406138.

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

3 Alternator / Generator parts are listed for the 2021 Chevrolet Silverado 6500 HD, from GM GENUINE and WAI GLOBAL.

This group includes GM GENUINE 84143543, GM GENUINE 84143541 and WAI GLOBAL 11785N.

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

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 6500 HD.

Listed part numbers: GM GENUINE 97356246 and GM GENUINE 19407210.

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

One part is listed for the 2021 Chevrolet Silverado 6500 HD — GM GENUINE 12624586.

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

This group shows a single part: GM GENUINE 13523300.

This table covers the backup alarms that sound in reverse. Read more

This group shows a single part: GM GENUINE 19405262.

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

5 Battery parts for the 2021 Chevrolet Silverado 6500 HD come from 5 brands — FVP, ACDELCO, EXIDE and 2 other brands. The "Popular" part is FVP P31TAGM.

In the AGM (Extended Life) grade, FVP, ACDELCO, EXIDE and 1 other brand supply 4 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is FVP P31TAGM.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT110031ST.

This group includes FVP P31TAGM, ACDELCO 31XAGMT and EXIDE XRF31D and the remaining parts 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 6500 HD.

Listed part numbers: GM GENUINE 19401871, GM GENUINE 19404605 and GM GENUINE 19404606, plus the other parts above.

This table covers the Battery Cable Junction blocks. Read more

This group shows a single part: GM GENUINE 19408101.

This table covers the Battery Terminal Bolt nuts. Read more

GM GENUINE supplies the 6 Battery Terminal Bolt / Nut parts for the 2021 Chevrolet Silverado 6500 HD. GM GENUINE 19405196 carries the "Popular" badge.

This group includes GM GENUINE 19405196, GM GENUINE 19404680 and GM GENUINE 19404737 and the remaining parts above.

This table covers the covers that protect battery terminals. Read more

This group shows a single part: GM GENUINE 19406131.

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 6500 HD.

Listed part numbers: GM GENUINE 13508761 and GM GENUINE 13528941.

This table covers the brackets that mount the Body Control Module (BCM). 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 6500 HD — GM GENUINE 84206594.

This table covers the conduit that protects a wiring run. Read more

GM GENUINE supplies the 4 Conduit parts for the 2021 Chevrolet Silverado 6500 HD.

Part numbers include GM GENUINE 19404803, GM GENUINE 19404820 and GM GENUINE 19404973, among others listed above.

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

One part is listed for the 2021 Chevrolet Silverado 6500 HD — GM GENUINE 12720006.

This table covers the Engine Control Module (ECM Computer) bolts. Read more

3 Engine Control Module (ECM Computer) Bolt parts for the 2021 Chevrolet Silverado 6500 HD come from GM GENUINE.

Part numbers include GM GENUINE 19404680, GM GENUINE 19404744 and GM GENUINE 19405063.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

43 Fuse parts for the 2021 Chevrolet Silverado 6500 HD come from 3 brands — GM GENUINE, BUSSMANN and ACDELCO. The "Popular" part is GM GENUINE 15305191. 10 Amp, 100 Amp, 125 Amp, 15 Amp, 150 Amp, 175 Amp, 2 Amp, 20 Amp, 225 Amp, 25 Amp, 250 Amp, 3 Amp, 30 Amp, 300 Amp, 350 Amp, 4 Amp, 40 Amp, 450 Amp, 5 Amp, 50 Amp, 60 Amp, 7.5 Amp and 70 Amp are all represented, and 25 Amp alone accounts for 5 parts.

This table covers the Fuse Box covers. Read more

This group shows a single part: GM GENUINE 85650389.

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

2 Horn parts for the 2021 Chevrolet Silverado 6500 HD come from GM GENUINE.

This group includes GM GENUINE 19405140 and GM GENUINE 19405686.

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 the 4 Jumper Cable parts for the 2021 Chevrolet Silverado 6500 HD.

Listed part numbers: GM GENUINE 19405687, GM GENUINE 19406886 and GM GENUINE 19407034, plus the other parts above.

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

One part is listed for the 2021 Chevrolet Silverado 6500 HD — GM GENUINE 13587439.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

5 Keyless Entry Remote parts are listed for the 2021 Chevrolet Silverado 6500 HD, from GM GENUINE and DORMAN. GM GENUINE 22881480 carries the "Popular" badge.

Part numbers include GM GENUINE 22881480, DORMAN 99355 and DORMAN 99352, among others listed above.

This table covers the replacement shells for the key fob. Read more

DORMAN supplies both parts for the 2021 Chevrolet Silverado 6500 HD.

Listed part numbers: DORMAN 95642 and DORMAN 92025.

This table covers the totally-integrated power modules that distribute body electrical power. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: GM GENUINE 84181077.

This table covers the Power Take Off (PTO) control modules. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Silverado 6500 HD.

This group includes GM GENUINE 86809181 and GM GENUINE 86809188.

This table covers the Serial Data Gateway modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2021 Chevrolet Silverado 6500 HD — GM GENUINE 13531324.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

2 Starter Motor parts are listed for the 2021 Chevrolet Silverado 6500 HD, from GM GENUINE and WAI GLOBAL.

Part numbers include GM GENUINE 12721722 and WAI GLOBAL 16033N.