Chevrolet Trailblazer TSBs — Technical Service Bulletins by Year
9,354 manufacturer communications are on file with NHTSA for the Chevrolet Trailblazer — service bulletins, service campaigns, warranty extensions, and software updates, 1999 to 2026. Pick a year for its bulletin list.
A TSB is factory repair guidance, not a recall — the repair is not automatically free. For defects and free repairs, see the Chevrolet Trailblazer problem rankings and each year's recall list.
Warranty extensions, campaigns & software updates
The communications worth checking your VIN against — unlike ordinary bulletins, these can mean free or reimbursed work if your vehicle qualifies.
Improvements to OnStar functionality.
Improvements to OnStar functionality. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
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…
Improvements to OnStar functionality. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Special Coverage. Certain 2021 model year Buick Encore GX and Chevrolet Trailblazer vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light) will…
Model years named: 2021
Special Coverage. Certain 2022 model year Buick Encore GX and Chevrolet Trailblazer vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light) will…
Model years named: 2022
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…
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…
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…
Special Coverage. Certain vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Additionally, a…
Model years named: 2022
Special Coverage. Certain vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Additionally, a…
Model years named: 2021
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…
Model years named: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2014, 2021, 2022, 2023, 2024, 2025
Bulletins by model year
| Year | TSBs | Most bulletined areas | |
|---|---|---|---|
| 2026 | 89 | Electrical, Engine | View bulletins |
| 2025 | 259 | Engine, Electrical | View bulletins |
| 2024 | 409 | Electrical, Engine | View bulletins |
| 2023 | 474 | Electrical, Engine | View bulletins |
| 2022 | 640 | Electrical, Engine | View bulletins |
| 2021 | 749 | Engine, Electrical | View bulletins |
| 2014 | 336 | Engine, Electrical | View bulletins |
| 2009 | 963 | Electrical, Engine | View bulletins |
| 2008 | 919 | Electrical, Engine | View bulletins |
| 2007 | 844 | Electrical, Engine | View bulletins |
| 2006 | 806 | Electrical, Engine | View bulletins |
| 2005 | 671 | Electrical, Engine | View bulletins |
| 2004 | 712 | Electrical, Engine | View bulletins |
| 2003 | 682 | Engine, Electrical | View bulletins |
| 2002 | 643 | Electrical, Engine | View bulletins |
| 2001 | 80 | Engine, Electrical | View bulletins |
| 2000 | 65 | Engine, Electrical | View bulletins |
| 1999 | 13 | Wheels & tires, Body & structure | View bulletins |
Questions buyers ask
How many TSBs does the Chevrolet Trailblazer have?
NHTSA's manufacturer-communications file lists 9,354 technical service bulletins and related communications for the Chevrolet Trailblazer across the 1999–2026 model years. The most bulletined areas are electrical, engine, transmission & drivetrain.
Are Chevrolet Trailblazer TSB repairs free?
Not automatically. A TSB tells dealers how to fix a known pattern; you pay unless the vehicle is under warranty or the bulletin is a warranty extension or service campaign that covers your VIN. Recall repairs, by contrast, are always free.
How do I get the full text of a Chevrolet Trailblazer TSB?
Take the bulletin's document ID to a dealer or to NHTSA's site — this page carries each communication's ID, date, and NHTSA's summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. Counts cover communications NHTSA's file names against Chevrolet Trailblazer model years shown here. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.