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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
070820042005-04-12. Service bulletin. ENGINE AND ENGINE COOLING. HIGHER THAT PERCEIVED NORMAL ENGINE COOLANT TEMPERATURE GAUGE READINGS WHEN OPERATING THE VEHICLE IN VERY HIGH OUT SIDE AMBIENT TEMPERATURES AND IN STOP AND GO OR SLOW MOVING TRAFFIC CONDITIONS. *EH
070620042005-04-12. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR. WATER SEEP INTO THE WINDSHIELD WIPER MODULE. *EH
100820022005-04-08. Service bulletin. UNKNOWN OR OTHER. IDL EMERGING ISSUES BROADCAST COVERING TOPICS SUCH AS THE ONSTAR, CALIFORNIA EMISSIONS, AN OVERVIEW OF THE EVAP OPERATION, WIRING ISSUES FOR THE SEATS, AND SHUTTER DURING PARKING LOT MANEUVERS. *TT
100820022005-04-08. Service bulletin. EQUIPMENT. THIS MESSAGE IS TO PROVIDE DEALERS WITH AN AWARENESS OF TWO NEW COMMANDS AVAILABLE VIA VOICE RECOGNITION IN THE ONSTAR GENERATION FIVE EQUIPPED VEHICLES. THE TWO COMMANDS ARE ONSTAR AND EMERGENCY. *TT
021220042005-04-06. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. INADEQUATE HVAC FOR PASSENGERS SEATED IN THE SECOND AND THIRD ROW. *TT
021120042005-04-06. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. WATER CAN ENTER THE WINDSHIELD WIPER MODULE CAUSING A SHORT CIRCUIT OR CORROSION OF COMPONENTS WHILE IN USE. *TT
0406040762005-03-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON UNSTABLE/ROUGH/LUMPY ENGINE IDLE, AND LOW SPEED VEHICLE SURGE, RANDOM DISTURBANCE OR VEHICLE SHUDDER. *TT
0406030022005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH
0402320012005-03-11. Service bulletin. STEERING. RELEASE OF STEERING GEAR STUB SHAFT BEARING KIT FOR SERVICE. *TT UPDATED 08-15-07. *KB UPDATED 10/09/07. *NJ
0405230032005-03-08. Service bulletin. SERVICE BRAKES, AIR:DISC:CALIPER. REVISED REAR BRAKE CALIPER BRACKET MOUNTING BOLT FASTENER SPECIFICATION. *EH
0308660082005-03-08. Service bulletin. STRUCTURE:BODY. PERIMETER SEAL/GASKET PULLS AWAY FROM LICENSE PLATE HOUSING AND/OR EXCESSIVE ADHESIVE AROUND GASKET. *TT
04081110032005-03-07. Service bulletin. STRUCTURE:BODY. REAR LICENSE PLATE POCKET PARTS NEW AVAILABLE INDIVIDUALLY. *TT
0408660042005-03-07. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE:HINGE AND ATTACHMENTS. LIFTGATE GLASS UNLATCHES ON ROUGH/BUMPY ROAD SURFACES. THIS BULLETIN REPLACES PREVIOUS BULLETIN NUMBER 04-08-66-004. *TT
0408630052005-03-07. Service bulletin. STRUCTURE:BODY:HOOD. RATTLE NOISE UNDER HOOD. *TT
0208620042005-02-16. Service bulletin. STRUCTURE:BODY. FRONT FASCIA WAVY. THIS SERVICE BULLETIN REPLACES 020862004. *EH
0406040532005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT ON P0133, P0172. *TT
0406010222005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEW CYLINDER BORE LINER/PISTON SLEEVE REPLACEMENT PROCEDURE. *TT
040872005-02-08. Service bulletin. EXTERIOR LIGHTING. TAIL LAMPS/STOP LAMPS PRODUCT FIELD ACTION ANNOUNCEMENT. *TT ADMINISTRATIVE MESSAGE. *TT
31382005-02-01. Service bulletin. POWER TRAIN. REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND OR P1271 STORED IN THE POWERTRAIN CONTROL MODULE. *EH
32092005-02-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN AT IDLE OR PARKING LOT MANEUVERS. *EH
32742005-01-31. Service bulletin. STEERING. INSTALLATION OF A POWER STEERING HOSE TO A NEW STEERING GEAR. *EH
32322005-01-28. Service bulletin. ENGINE AND ENGINE COOLING. MISFIRE AT IDLE COLD AND POSSIBLE P0171 AND OR P0174. *EH
32632005-01-28. Service bulletin. ELECTRICAL SYSTEM. 125A MEGA FUSE OPENS WHEN ATTEMPTING TO JUMP START. *EH
0201390072005-01-11. Service bulletin. UNKNOWN OR OTHER. AUTOMATIC DUAL ZONE HVAC BATTERY DRAW. *AR
0408430072005-01-11. Service bulletin. VISIBILITY:REAR WINDOW WIPER/WASHER. REAR WIPER DOES NOT CLEAN REAR WINDOW. *EH

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