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Service bulletins for the 2021 Chevrolet Silverado

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1747 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
PIT61342024-04-15. Service bulletin. SERVICE BRAKES, AIR:DISC:PADS. This Preliminary information communicates an issue with premature brake pad life and engineering is working on release new pad lining material.
PIP5596A2024-04-15. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
PIT5838B2024-03-18. Service bulletin. SERVICE BRAKES. This Preliminary information communicates A vehicle may have a concern of a brake noise or moan may be heard at the beginning of drive-off from a complete stop, This concern may be considered normal .
PIT5479F2024-03-18. Service bulletin. SERVICE BRAKES. This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.
23-NA-2012023-12-21. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING; SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:POWER ASSIST. This service bulletin advises the technician of a possible loose ground that may be causing customer concerns of Loss of Steering Assist and/or Loss of Brake Assist and Malfunction Indicator Lamp (MIL) Illuminated.
22-NA-0922023-12-06. Service bulletin. SERVICE BRAKES, HYDRAULIC. This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments.
22-NA-0922023-09-15. Service bulletin. SERVICE BRAKES. This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments.
23-NA-1442023-09-15. Service bulletin. SERVICE BRAKES. This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns.
20-NA-1822023-07-11. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This service bulletin provides a procedure to replace the brake line pressure switch to correct a customer concern of a brake booster pump motor that runs at all times even after the ignition is turned off.
22-NA-2472023-05-04. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
21-NA-0892023-04-12. Service bulletin. SERVICE BRAKES. This technical bulletin provides a procedure to replace the rear calipers if found packed for of mud and debris.
22-NA-2472022-12-24. Service bulletin. SERVICE BRAKES, HYDRAULIC. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
22-NA-0922022-12-21. Service bulletin. SERVICE BRAKES, HYDRAULIC. This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments.
PIT3665L2022-11-21. Service bulletin. SERVICE BRAKES. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
15-00-89-004E2022-10-11. Service bulletin. POWER TRAIN; SUSPENSION; ENGINE AND ENGINE COOLING; SERVICE BRAKES, HYDRAULIC; STEERING. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
20-NA-0202022-08-29. Service bulletin. SERVICE BRAKES, HYDRAULIC. This technical bulletin provides a procedure to replace the front and rear brake pads if the brakes are squealing.
PIT5569B2022-08-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
PIT5681C2022-07-25. Service bulletin. SERVICE BRAKES. This Preliminary information communicates the location of the GM Accessory Performance Brake System Rotor Specifications
21NA2752022-06-21. Service bulletin. WHEELS; SERVICE BRAKES. This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing ?D? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 Downshift.
PIT5838A2022-06-13. Service bulletin. SERVICE BRAKES. This Preliminary information communicates A vehicle may have a concern of a brake noise or moan may be heard at the beginning of drive-off from a complete stop, This concern may be considered normal .
070316004D2022-06-13. Service bulletin. SERVICE BRAKES. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
21-NA-0432022-06-02. Service bulletin. FUEL SYSTEM, GASOLINE; SERVICE BRAKES; ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL; WHEELS. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
18NA0672022-05-31. Service bulletin. SERVICE BRAKES. This service bulletin provides information for cleaning brake dust off of aluminum or chrome wheels.
20NA1972022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern.
22-NA-0922022-05-18. Service bulletin. SERVICE BRAKES, HYDRAULIC. This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.