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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.

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By component

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
21-NA-1552022-07-01. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin advises the technician to check for faults that may be caused by the trailer other wise found by a possible faulty trailer connector.
21-NA-0772022-06-25. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
21NA2282022-06-21. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM). This bulletin provides a procedure to program the BCM to correct the customers concern of RKE idle Time-out.
21NA1872022-06-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of Unable to Set PIN to Enable Teen Driver Feature.
21NA1132022-06-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator.
PIP58532022-06-13. Service bulletin. ELECTRICAL SYSTEM. This PI communicates to dealers and technicians a possible diode issue in the TCCM, and how to properly diagnose for a diode issue.
PIP58552022-06-13. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated with Any Combination of DTCs P0011 P0014 P0016 P0017 Setting. Advises to perform Strategy Based Diagnosis and to replace the affected Camshaft Position Actuator Magnet as necessary.
PIT5195G2022-06-13. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
PIT5745D2022-06-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
PIE0665A2022-06-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM; POWER TRAIN. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or “Service Emissions System” message on the Driver Information Center (DIC).
22-NA-1152022-06-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
22-NA-1092022-06-06. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. This informational bulletin provides information on Information on Common Customer Trailer Side Faults.
22-NA-0872022-06-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 Set.
21-NA-1492022-05-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
22NA0122022-05-31. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken Connector and/or Sensor Retaining Tabs, and/or Paint Damage of Park Assist Sensors.
17NA3742022-05-31. Service bulletin. ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS. This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
22-NA-0462022-05-18. Service bulletin. FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC).
22-NA-0822022-04-30. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp Illuminated with DTC P06DD, P2B60, P26BB, P1098 Set.
21-NA-1662022-04-29. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
N2223629102022-04-28. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Floor Plan with Labor Op. On April 13, 2022, certain vehicles had their IVH status updated to CLOSED. These VINs do not require a field action to be performed on them for N222362910. Dealers are now able to submit for Floor Plan reimbursement for these VINs. The Floor Plan claim will need to be H-Routed due to the VIN being closed in IVH
PIT58362022-04-18. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. This Preliminary information communicates and issue with the park assist off message or unwanted/false parking assist alerts and provide diagnostics tip for dealership to inspect the parking assist sensor/bezel mounting in the front and rear bumpers
PIP4670J2022-04-18. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
PIP5838A2022-04-18. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector.
PIP58432022-04-18. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated During Cold Ambient Temperatures with DTCs P30C3 and/or P30BF P30C7 P30CB Setting.
PIT5750B2022-04-18. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with the battery goes dead and provides diagnostics tips on inspecting the LIN bus.

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