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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.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
021402004-07-12. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH. WHEN ATTEMPTING TO TURN THE KEY TO START THE VEHICLE, YOU MAY EXPERIENCE HARD OR INTERMITTENT MECHANICAL BINDING IN THE IGNITION CYLINDER. *TT
010162004-07-01. Service bulletin. ELECTRICAL SYSTEM. ANTI-LOCK BRAKE SYSTEM (ABS) LIGHT ON, RED BRAKE LIGHT ON, SERVICE 4WD LIGHT ON, HVAC BLOWER MOTOR INOPERATIVE. *TT
01181C2004-06-30. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) P0172. 4.2 LL8 ENGINE. *TT *MJ
008592004-06-09. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) C0327 WITH OR WITHOUT ADDITIONAL DIAGNOSTIC TROUBLE CODES (DTCS) SETTING. *TT *MJ
01968A2004-06-09. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) P0171. *TT
016732004-06-03. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODES P1271, P1275 LOW POWER.*MR
016232004-06-03. Service bulletin. ELECTRICAL SYSTEM. 4.2 LL8 ENGINE DIAGNOSTIC TROUBLE CODE P0016 OR P1345 WITH NO DRIVEABILITY SYMPTOMS.*MR
020382004-05-20. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE B1000. *MR
018162004-05-07. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE P0130. *MR *TT
019252004-05-06. Service bulletin. ELECTRICAL SYSTEM. TECH 2 ENGINE DATA INCORRECT- GEN L-TERMINAL SIGNAL COMMAND DATA PARAMETER. *MR
019002004-05-04. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. UNDER HOOD FUSE BLOCK - 125 AMP MEGA FUSE BLOWN. ALSO INCLUDING BUICK RAINIER 2002, 2003. *MR
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
013542003-11-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY. *TT
0805032003-11-05. Service bulletin. ELECTRICAL SYSTEM:IGNITION. THE PURPOSE OF THIS MESSAGE IS TO PROVIDE INFORMATION ABOUT A NEW PRODUCT EMISSION RECALL. THE RECALL NUMBER OF 03042. THIS RECALL IS FOR VEHICLES IN DEALER INVENTORY ONLY. SOME OF THESE VEHICLES MAY HAVE BEEN BUILT WITH SPARKPLUGS THAT MISFIRE. *TT

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