Service bulletins for the 2024 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.
421 on file from NHTSA, as of 2026-10-19.
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Only bulletins with type: Service campaign are shown. Show all
| N252494250-01 | 2026-01-27. Service campaign. UNKNOWN OR OTHER. Certain vehicles listed above may be missing relevant information regarding the use of snow chains, snow socks, or other traction devices from the Owner’s Manual. Vehicle owners will be mailed an owner’s manual insert to include with other important printed material in the glovebox. For vehicles currently on dealer lots, dealers will include the insert prior to delivery. |
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| N252494250 | 2025-08-26. Service campaign. UNKNOWN OR OTHER; WHEELS. Certain vehicles may be missing relevant information regarding the use of snow chains, snow socks, or other traction devices from the Owner’s Manual. Vehicle owners will be mailed an owner’s manual insert to include with other important printed material in the glovebox. For vehicles currently on dealer lots, dealers will include the insert prior to delivery. |
| N252494770-01 | 2025-06-20. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the affected vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish. |
| N252494770 | 2025-06-17. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the applicable vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish. |
| General Communication | 2024-08-26. Service campaign. ELECTRICAL SYSTEM. Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers. |
| A242435780-01 | 2024-08-15. Service campaign. UNKNOWN OR OTHER. Emission Recall - certain vehicles may have The engine control module may not properly control engine ignition timing following certain Auto Engine Stop/Start events. If this were to occur, the Malfunction Indicator Lamp (Check Engine Light) would illuminate, and the engine may run rough or knock. In some cases, if the vehicle is driven with engine knock, engine damage could occur. Proper engine ignition timing control will resume following a subsequent Auto Engine Stop/Start event. This is a voluntary Emission Recall. Dealers are to reprogram the Engine Control Module.. |
| N242446290-02 | 2024-07-30. Service campaign. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. vehicles may have a condition in which the clutch backing plate retaining ring and/or the clutch piston retaining ring inside the transmission are out of specification. Dealers are to overhaul the clutch piston housing. |
| N242446290-01 | 2024-06-18. Service campaign. UNKNOWN OR OTHER. Service Update - certain vehicles may have a condition in which the clutch backing plate retaining ring and/or the clutch piston retaining ring inside the transmission are out of specification. Dealers are to replace the clutch piston housing. |
| N242446290 | 2024-06-13. Service campaign. UNKNOWN OR OTHER. Service Update - Certain vehicles may have a condition in which the clutch backing plate retaining ring and/or the clutch piston retaining ring inside the transmission are out of specification. Dealers are to replace the clutch piston housing. |
| N242446290 | 2024-05-30. Service campaign. UNKNOWN OR OTHER. Upcoming Service Update Bulletin N242446290 – Expansion of Population |
| A242435780 | 2024-05-30. Service campaign. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Emission Recall - General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles with a 1.2L engine. The engine control module may not properly control engine ignition timing following certain Auto Engine Stop/Start events. If this were to occur, the Malfunction Indicator Lamp (Check Engine Light) would illuminate, and the engine may run rough or knock. In some cases, if the vehicle is driven with engine knock, engine damage could occur. Proper engine ignition timing control will resume following a subsequent Auto Engine Stop/Start event. Dealers are to reprogram the Engine Control Module. |
| N232433890 | 2024-05-16. Service campaign. FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER; POWER TRAIN; ENGINE. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.