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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.

By type

By component

By trouble code

By topic

Bulletins, newest first
08-07-30-035I2024-12-19. Service bulletin. POWER TRAIN. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
24-NA-2022024-12-19. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
23-NA-1512024-12-18. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
21-NA-1812024-12-18. Service bulletin. POWER TRAIN. This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.
19-NA-2192024-12-17. Service bulletin. ENGINE. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
N2424714602024-12-17. Service campaign. UNKNOWN OR OTHER. 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.
18-NA-1802024-12-17. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIT5985G2024-12-17. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM. This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.
PIT5832S2024-12-16. Service bulletin. ENGINE; UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
24-NA-1432024-12-16. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
24-NA-1132024-12-16. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.
PIT62932024-12-16. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This Preliminary information communicates if a customer and service tech encounter this issue, verify the switch assembly and continue with repairs.
PIT5962B2024-12-12. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
21-NA-0432024-12-10. Service bulletin. STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This 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.
PIC65872024-12-09. Service bulletin. UNKNOWN OR OTHER; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. This Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct.
PIC6552D2024-12-09. Service bulletin. LANE DEPARTURE: ASSIST; UNKNOWN OR OTHER; LANE DEPARTURE: WARNING. This Preliminary information communicates how to recover the Image Processing Module.
PIP5974E2024-12-09. Service bulletin. POWER TRAIN. This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
PIT6101M2024-12-09. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates Engineering is investigating a no audio issue.
PIT6235A2024-12-09. Service bulletin. UNKNOWN OR OTHER; POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates that a vehicle may have various warning lights on or various symptoms. The technician will find various codes set. The tech is directed to inspect a wiring harness under the cowl for chafing and damage. If damage is found it should be repaired.
PIT6018H2024-12-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the possibility of a resetting of some information modules prior to delivery.
PIT6231A2024-12-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that poor phone call sound may be due to microphone being installed upside down. Technician is to reinstall the microphone to ensure it is installed correctly.
PIT6068C2024-12-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a vehicle may exhibit a service driver assist message. On inspection the tech will find B1A05 set in the Front View Camera Module (FVCM). The tech is directed to perform programming and learn on the FVCM.
PIT62652024-12-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians that if they encounter a vehicle with this issue, they can contact TCSC to have the software for the MDI backdated to communicate properly.
PIT6214A2024-12-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information of an OnStar software concern.
PIP6009A2024-12-05. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the request that engineering it looking to get data from these vehicles before any work is being performed.

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