Service bulletins for the 2003 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.
682 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 020844016 | 2003-02-12. Service bulletin. STRUCTURE:BODY. WHINE, BUZZ, GENERATOR WHINE, WHINE TYPE NOISE HEARD ON ACCELERATION. *TT |
|---|---|
| 020309002A | 2003-02-10. Service bulletin. SUSPENSION. INTERMITTENT BOOM, RUMBLING NOISE AND / OR DISTURBANCE HEARD IN PASSENGER COMPARTMENT WHILE DRIVING AT HIGHWAY SPEEDS. *TT |
| 020139005 | 2003-02-10. Service bulletin. EQUIPMENT. HVAC SYSTEM INOPERATIVE FOR A DRIVE CYCLE, POOR HVAC SYSTEM PERFORMANCE IN HIGH AMBIENT TEMPERATURES. *TT |
| 190702 | 2002-11-22. Service bulletin. UNKNOWN OR OTHER. CUSTOMERS MAY COMMENT THAT THE SERVICE FOUR-WHEEL DRIVE / ALL-WHELL DRIVE INDICATOR ILLUMINATED OR THE FOUR-WHEEL DRIVE / ALL-WHEEL DRIVE IS INOPERATIVE. *TT |
| 020730024A | 2002-10-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT |
| 020421006 | 2002-10-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. SOME CUSTOMERS MAY COMMENT THAT THE 4WD/AWD INDICATOR LIGHTS ON THE SELECTOR SWITCH DO NOT WORK OR THE 4WD/AWD SYSTEM MAY BE INOPERATIVE. *TT |
| 020846008 | 2002-10-03. Service bulletin. UNKNOWN OR OTHER. INFORMATION REGARDING THE ON-STAR MODULE COVER RETAINING TAB BREAKING. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.