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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.

By type

By component

By trouble code

Bulletins, newest first
010846002C2003-09-26. Service bulletin. EQUIPMENT. PROGRAMMING OF REPLACEMENT ONSTAR VEHICLE COMMUNICATION AND INTERFACE MODULES (VCIM). *TT
1213022003-09-13. Service bulletin. EQUIPMENT:ELECTRICAL. ERROR MESSAGES WHEN PROGRAMMING A NEW MODULE. *TT
1209022003-09-12. Service bulletin. STRUCTURE:BODY. BUZZ OR RATTLE NOISE COMING FROM THE FRONT END OF LIGHT ACCELREATION AT 25 TO 45 MILES PER HOUR OR OVER BUMPS. *TT
0308420042003-08-27. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH. HEADLAMP LOW BEAM BULB SOCKET NOW AVAILABLE FOR SERVICE USE. *TT
020139006A2003-08-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSING POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER STOPS BLOWING COLD, AIR CONDITIONER CYCLES ON AND OFF. *TT
0306040302003-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MULTIPLE DRIVEABILITY SYMPTOMS OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE DUE TO CLOGGED FUEL INJECTORS. *TT
0301390072003-08-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING (A/C) INOPERATIVE / INTERMITTENT, AIR CONDITIONER BLOWS WARM AIR. *TT
0310032003-07-25. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. THE LIFT GATE, OR LIFT GATE GLASS, BINDS WHEN OPENING OR DOES NOT OPEN COMPLETELY BECAUSE OF CENTER HIGH MOUNTED STOP LAMP OR CHIMSEL APPLIQUE HITS THE ROOF OF THE VEHICLE. *TT *JB
0304032003-07-24. Service bulletin. AIR BAGS:FRONTAL. DRIVER SIDE AIRBAG MAY NOT DEPLOY AS DESIGNED - PRODUCT SAFETY RECALL TO REPLACE DRIVER'S AIRBAG. *TT *JB
0319032003-04-28. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REAR AXLE PINION SEAL LEAK CONDITION. *TT
0308460022003-04-28. Service bulletin. EQUIPMENT. DRIVER UNABLE TO CONFIGURE ONSTAR SYSTEM. VARIOUS MODELS INCLUDING THE 2003 ISUZU ASCENDER. *TT
020235006A2003-04-25. Service bulletin. STEERING. SQUEAK, RUB / SCRUB TYPE NOISE IN STEERING COLUMN. *TT
0308640062003-04-25. Service bulletin. STRUCTURE:BODY:DOOR. DOORS HARD TO CLOSE. *TT UPDATED 07-24-07. *KB
020421002A2003-04-17. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD INDICATOR ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) B2725 SET, TRANSFER CASE SELECTOR SWITCH IS IN ONE POSITION - INDICATOR LAMP INDICATES ANOTHER RANGE IS SELECTED. *TT
0304190022003-04-15. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SQUEAK, SQUEAL OR WHISTLE NOISE FROM FRONT AXLE. *TT
0304170022003-04-15. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. WHINE NOISE FROM REAR AXLE. *TT
020421008A2003-04-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SHUDDER, ROCKING MOTION, BINDING, FEELS LIKE VEHICLE IS TUCK IN 4WD WHEN TURNING AT LOW SPEEDS. *TT
0307300012003-04-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION SLIPPING OR TORQUE CONVERTER CLUTCH (TCC) INOPERATIVE WITH NO SERVICE ENGINE SOON (SES) LIGHT DISPLAYED AND NO DIAGNOSTIC TROUBLE CODE (DTC) P1870. *TT UPDATE. *TT
0208620042003-02-28. Service bulletin. STRUCTURE:BODY. FRONT FASCIA WAVY. *TT
0201390062003-02-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSING POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER STOPS BLOWING COLD, AIR CONDITIONER CYCLES ON AND OFF. *TT
0205350062003-02-14. Service bulletin. STEERING:COLUMN. SQUEAK NOISE IN STEERING COLUMN. *TT
0204210082003-02-14. Service bulletin. POWER TRAIN. SHUDDER, ROCKING MOTION, BINDING, FEELS LIKE VEHICLE IS STUCK IN 4WD (CROW HOP) WHEN TURNING AT LOW SPEEDS. *TT
020421006A2003-02-14. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT
0208640212003-02-14. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. OUTSIDE REARVIEW MIRRORS DO NOT RETURN TO THEIR ORIGINAL POSITION AFTER USING CURB VIEW ASSIST FEATURE. *TT
0209400052003-02-14. Service bulletin. SEAT BELTS:REAR/OTHER. AVAILABILITY OF REAR SEAT SHOULDER BELT COMFORT GUIDES. *TT

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