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Service bulletins for the 2021 Chevrolet Trailblazer

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.

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

By type

By component

By trouble code

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Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
20NA1352020-10-26. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY:HATCHBACK/LIFTGATE. This technical bulletin provides repair information to correct customer concerns of Power Liftgate and/or Instrument Panel Cluster (IPC) Inoperative, No Audio, AWD/ 2WD Light Toggles Randomly, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0650, P15A1, P159F-00, U0184-00, U0198-00 and/or U1501-00 Set.
18NA3062020-10-26. Service bulletin. EQUIPMENT; STRUCTURE:BODY. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
PIP5704D2020-08-10. Service bulletin. STRUCTURE. This Preliminary information communicates a work around when only 11 digit PUN (Part Unique Number) is seen on Service Solenoid Body Assembly.
20NA1222020-08-10. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE:SUPPORT DEVICE/STRUT. This informational bulletin provides Information on Proper Liftgate Adjustment.
20NA1212020-08-10. Service bulletin. STRUCTURE. This technical bulletin provides a procedure to locate and fix a possible leak in the roof area due to missing sealant.
PIC6416A2020-06-15. Service bulletin. STRUCTURE. This Preliminary information communicates to the dealer that if the service AWD (All-Wheel Drive) or AWD (All-Wheel Drive) Off messages are on and there is a history DTC of C15C9 SYM02 set then no repairs are to be made at this time, a software issue was found and Engineering is working on a permanent solution. If the DTC is setting current then published diagnosis needs to be followed.

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