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Service bulletins for the 2024 Chevrolet Blazer

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.

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

Warranty extensions
22-NA-2442024-05-30. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.

A warranty extension may pay for a repair after the basic warranty has ended. Read the document for which vehicles and which repair it covers.

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Bulletins, newest first
N262570770-032026-10-16. Service campaign. ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
PIT6110L2026-10-14. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
PIT6457C2026-10-05. Service bulletin. UNKNOWN OR OTHER. This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
PIC6540K2026-10-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers a procedure to reset the radio.
PIT6368E2026-10-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
PIT5698F2026-09-30. Service bulletin. UNKNOWN OR OTHER. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
N262570770-022026-09-25. Service campaign. ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
PIT6426C2026-09-22. Service bulletin. UNKNOWN OR OTHER. If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.
PIT6235C2026-09-22. Service bulletin. UNKNOWN OR OTHER. A vehicle may arrive at the dealer with various symptoms or codes. Dealer is advised to inspect a wiring harness for chaffing at the cowl.
N262570770-012026-09-18. Service campaign. ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
N2625707702026-09-15. Service campaign. ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
PIT65442026-09-10. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven. When a repair is available, this PI will be updated.
PIP4902W2026-09-10. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT6503E2026-09-02. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
PIT65412026-09-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication
662.302026-08-31. Over-the-air update. UNKNOWN OR OTHER. • Improvements to the availability of driver assistance features.
PIT6503D2026-08-27. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
PIC6551C2026-08-27. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
N252502891-012026-08-20. Service campaign. POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module.
N252502890-012026-08-20. Service campaign. POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the front electric drive transmission module.
N242471460-012026-08-20. Service campaign. POWER TRAIN. Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Dealers will inspect and replace the Electrical Drive Unit if necessary.
PIT6503C2026-08-17. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
PIT6368D2026-08-14. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
PIT6512A2026-08-14. Service bulletin. UNKNOWN OR OTHER. This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
PIT6110K2026-08-04. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

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