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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
00827C2003-11-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON WITH TAC MODULE CODES P1516 AND POSSIBLE CODES P1514, P1515, P1518. *TT
01446A2003-11-24. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES. *TT
00078F2003-11-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE KNOCK NOISE INITIAL STARTUP IN COLD AMBIENT 10 DEGREES CENTIGRADE/50 DEGREES FAHRENHEIT. *TT
00817C2003-11-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. COLD IDLE STALL THAT OCCURS DURING OR IMMEDIATELY AFTER EVAP DIAGNOSTICS ARE RUN. *TT
014102003-11-22. Service bulletin. POWER TRAIN. POOR PERFORMANCE FROM A STOP IN 2WD, AUTO OR 4WD HI. 2003, 2003 CADILLAC EXT ALSO INCLUDED. *TT
00651B2003-11-21. Service bulletin. EXTERIOR LIGHTING:BRAKE LIGHTS. REAR BRAKE LIGHT BULB OUT. *TT
013542003-11-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY. *TT
00817A2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE STALL WHILE RUNNING EVAP DIAGNOSTICS. *TT
013142003-11-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MISFIRE POSSIBLE DIAGNOSTIC TROUBLE CODES (DTCS) P0300 - P0306. *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
0811032003-11-05. Service bulletin. CHILD SEAT. THIS VME STATES THAT GM HAS DECIDED THAT CERTAIN VEHICLES DO NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD 225 IN BOTH US AND CANADA BECAUSE THE OWNERS MANUAL DOES NOT INCLUDE THE LOCATION SYMBOLS FOR THE LOWER UNIVERSAL ANCHORAGE SYSTEM AND EXPLANATION OF THE MEANING OF THE SYMBOLS. RECALL 03039 FOR CHILD SEAT ANCHORAGE SYSTEM. *TT
0821032003-11-04. Service bulletin. EQUIPMENT. ACCESSORIES BRUSH GUARD PACKAGE ON VEHICLES WITH THE NORTH FACE EDITION. *TT
0625032003-10-29. Service bulletin. STRUCTURE. REAR LICENSE PLATE POCKET SEAL BEING ROLLED OVER DUE TO IMPROPER INSTALLATION. THIS A VME MESSAGE. *TT
0625032003-10-29. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES. WINDSHIELD WASHER NOZZLES BEING CLOGGED IR AIMED IMPROPERLY. VME MESSAGE. *TT
0619032003-10-29. Service bulletin. POWER TRAIN. UNUSUAL VIBRATION FELT AT IDLE OR AT VERY LOW RPM DURING PARKING LOT MANEUVERS. ALSO RESIDENCE NOISE ACCOMPANYING THE VIBRATION. *TT
0618032003-10-29. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. POWER WINDOW MOTORS OCCASIONALLY OR INTERMITTENTLY INOPERATIVE. DIAGNOSIS/TROUBLESHOOTING. *TT
0523032003-10-28. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONER LOW PRESSURE CYCLING SWITCH INTERMITTENTLY INOPERATIVE OR STUCK OPEN/ INTERMITTENT AIR CONDITIONER OPERATION AND/OR LOSS OF COLD AIR. *TT
0522032003-10-28. Service bulletin. SERVICE BRAKES, HYDRAULIC. PRODUCT SAFETY RECALL 03025. FRONT LEFT BRAKE PIPE MAY HAVE BEEN SCORED DURING MANUFACTURING. THE BRAKE PIPE MAY LOSE STRENGTH AT THE SCORE LOCATION DUE TO CORROSION AND FATIGUE RESULTING FROM BRAKE FLUID PRESSURE, VIBRATION AND TEMPERATURE CHANGES. *TT
0522032003-10-28. Service bulletin. POWER TRAIN. PRODUCT FIELD ACTION 03012. VEHICLES ARE EQUIPPED WITH A MECHANICAL OVERRIDE THAT COULD ALLOW THE IGNITION KEY TO BE REMOVED WITH THE SHIFT LEVER IN A POSITION OTHER THAN PARK. IN ADDITION, THESE VEHICLES HAVE AN OVERRIDE THAT CAN ALLOW THE TRANSMISSION TO BE SHIFTED OUT OF PARK WITH THE IGNITION IN THE OFF POSITION. *TT
020846010E2003-10-03. Service bulletin. UNKNOWN OR OTHER. PROGRAMMING ONSTAR MODULE FOR CANADIAN FRENCH VOICE RECOGNITION. *TT UPDATE. *TT UPDATED *EH
0308670042003-09-30. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. PARTS AVAILABILITY FOR SUNROOF REPAIRS. *TT
0308660062003-09-30. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. LIFT GATE GLASS HARD TO CLOSE. *TT
0308420062003-09-29. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS:SWITCH. TAIL LAMP CIRCUIT BOARD NOW AVAILABLE FOR SERVICE USE. *TT
0306040332003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P0336. *TT UPDATE. TO INCLUDE 2004 ISUZU NQR COMMERCIAL MODELS. *TT
0306040312003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P1125. *TT

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