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
By topic
| 18NA073 | 2022-05-31. Service bulletin. ENGINE. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. |
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| 18NA067 | 2022-05-31. Service bulletin. SERVICE BRAKES. This service bulletin provides information for cleaning brake dust off of aluminum or chrome wheels. |
| 16NA222 | 2022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:FILTER/SCREEN; UNKNOWN OR OTHER. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. |
| PIC5260E | 2022-05-16. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks. |
| 12-00-89-003B | 2022-05-10. Service bulletin. EQUIPMENT:ELECTRICAL; ENGINE. This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only). |
| PIE0693 | 2022-05-06. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Oil Leaking from Front of Engine. |
| 22-NA-070 | 2022-05-03. Service bulletin. EQUIPMENT. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements. |
| 01-00-89-010P | 2022-04-29. Service bulletin. EQUIPMENT. This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern. |
| PI0281I | 2022-04-22. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; STRUCTURE. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. |
| 21-NA-181 | 2022-04-21. Service bulletin. POWER TRAIN; EQUIPMENT. This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation. |
| PIP5844 | 2022-04-18. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. This Preliminary information communicates the possibility of dtc p06DD due to low or no oil pressure immediately following engine oil and filter change due to oil filter and main oil gallery being drained or empty. |
| PIT3271M | 2022-04-18. Service bulletin. WHEELS; TIRES. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection. |
| 21-NA-169 | 2022-04-15. Service bulletin. POWER TRAIN. This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves. |
| 01-00-89-010O | 2022-04-08. Service bulletin. UNKNOWN OR OTHER. This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern. |
| 22-NA-074 | 2022-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system. |
| 22-NA-070 | 2022-04-06. Service bulletin. EQUIPMENT. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements. |
| 21-NA-016 | 2022-04-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides a procedure to locate and repair a possible loose wire crimp in the engine wiring harness to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated. |
| 20-NA-084 | 2022-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides information on normal engine characteristics/noise produced by the LIH engine. |
| 22-NA-059 | 2022-04-05. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. This technical bulletin provides repair information to correct a customer concern of Rotor Position Sensor (RPS) Software. |
| 22-NA-009 | 2022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters. |
| 20-NA-079 | 2022-04-05. Service bulletin. SERVICE BRAKES. This service bulletin provides a procedure to correct a condition of Front Brake Squeal Noise Heard During Light Brake Pedal Application. |
| 18-NA-099 | 2022-04-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. |
| 17-NA-052 | 2022-04-05. Service bulletin. WHEELS; EQUIPMENT. This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels with base paint. GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY). |
| PIE0682 | 2022-03-30. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Check Engine Lamp On and/or Reduced Engine Power message displayed on the driver information center (DIC). |
| 22-NA-008 | 2022-03-30. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides a procedure to locate a possible short in the wiring harness near the MAF sensor. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.