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Service bulletins for the 2003 Chevrolet Impala

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.

477 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
112120022005-04-12. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE EXHIBIT A WHINE NOISE DURING A COLD START PARTICULARLY IN AMBIENT TEMPERATURES BELOW 60 DEGREES FAHRENHEIT. *EH
0408520012005-03-10. Service bulletin. ELECTRICAL SYSTEM. SETUP PROGRAMMING BCM FOR REMOTE KEYLESS ENTRY. *EH
0405230022005-03-09. Service bulletin. SERVICE BRAKES, HYDRAULIC. BRAKE ROTOR MINIMUM ALLOWABLE THICKNESS AFTER REFINISH SPECIFICATION CORRECTION. *TT
0403080102005-02-17. Service bulletin. SUSPENSION. CHANGES TO LABOR TIME GUIDE RELATING TO FRONT SUSPENSION LABOR OPERATIONS COMPONENTS. *EH
0308490232005-02-16. Service bulletin. STRUCTURE:BODY. LOUD POP OR SNAP NOISE COMING FROM INSTRUMENT PANEL (IP) IN HIGH AMBIENT TEMPERATURES. THIS SERVICE BULLETIN REPLACES 030849023. *EH
020730013D2005-02-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INCORRECT TRANSMISSION SHIFTS POOR ENGINE PERFORMANCE HARSH 1-2 UPSHIFTS SLIPS 1ST AND REVERSE TORQUE CONVERTER CLUTCH STUCK OFF ON DIAGNOSTIC TROUBLE CODE P0730, P0756, P0757, P0741, P0742. *EH *TT
0406010212005-02-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEW REAR MAIN SEAL AND SPECIAL TOOL FOR INSTALLATION. *TT
04081100072004-12-29. Service bulletin. STRUCTURE. INSTRUMENT PANEL GAP APPEARANCE. *TT
0408470032004-12-29. Service bulletin. ELECTRICAL SYSTEM. SECURITY LIGHT ON, ENGINE WILL NOT CRANK, DIAGNOSTIC TROUBLE CODES B2958 AND/OR B2960. *TT
040604066A2004-12-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CLUNK/BANG FROM REAR OF VEHICLE. *TT
30642004-11-17. Service bulletin. ELECTRICAL SYSTEM:IGNITION. DELAYED CRANK, MAY BE NECESSARY TO HOLD KEY IN START SEVERAL SECONDS UNTIL START. *TT
31022004-11-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. SERVICE VME 01-04 VEHICLE EQUIPPED WITH 4T65E AUTOMATIC TRANSMISSION 4T65E TRANSMISSION VALVE BODY INSPECTION PROCEDURE. (TO INCLUDE 2004 PONTIAC AZTEC) *SC ALL 2001 - 2006 PASSENGER VEHICLES WITH 4T65E TRANSAXLE. *TT
30972004-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC SIDE TO SIDE TEMPERATURE DIFFERENCE. *SC
31012004-11-04. Service bulletin. UNKNOWN OR OTHER. INOPERATIVE A/C VENT LOUVERS. *JB
31292004-11-03. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C EVAPORATOR FREEZING. *TC
040622004-10-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL COOLER ADAPTOR FITTINGS. CUSTOMER SATISFACTION PROGRAM BULLETIN. *TT
30452004-10-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OVERHEAT AND, OR COOLING FANS INOPERATIVE INTERMITTENTLY. *TT
30432004-10-14. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT SECURITY LAMP ON. DIAGNOSITC TROUBLE CODE B2958 OR B2960 MAY OR MAY NOT BE PRESENT. *TT
040622004-10-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL COOLER ADAPTOR FITTINGS. CUSTOMER SATISFACTION PROGRAM 04062 PRODUCT FIELD ACTION ANNOUNCEMENT. *TT
30592004-10-08. Service bulletin. EQUIPMENT. WHEN USING ONSTAR PERSONAL CALLING FEATURE, THE CALLER CANNOT BE HEARD ON OUTBOUND CALL ONLY. *TT
091320022004-09-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THIS SERVICE VME CONCERNS 2003 VEHICLES EQUIPPED WITH 4T65E TRANSMISSION WHICH EXHIBITS DIAGNOSTIC TROUBLE CODE P0742 WITH NO OTHER CODES STORED AND HARSH UP SHIFT AND/OR TCC SHUTTER ON DECEL. *TT
040820042004-09-17. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR. THE CURRENT BRAKE ROTOR MINIMUM ALLOWABLE THICKNESS AFTER REFINISH, OR MINIMUM THICKNESS SPECIFICATION, FOUND IN THE PAST SERVICE MANUAL APPLICATIONS ARE INCORRECT. PLEASE USE CORRECT INFORMATION AS FOLLOWS. *TT
012320042004-09-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FLUID LEAK FROM REVERSE SERVO COVER AT AMBIENT TEMPERATURES. TRANSMISSION FLUID MAY BE DETECTED ON THE LOWER PAIN RAIL OR CASE SIDE. MOST LEAK REPORTS HAVE BEEN FOUND DURING PREDELIVERY INSPECTION. GM VOICEMAIL EXPRESS. *TT
30112004-08-25. Service bulletin. EQUIPMENT. WHEN USING VOICE RECOGNITION DIALING, SOME NUMBERS OR COMMANDS MAY NOT BE UNDERSTOOD BY THE SYSTEM ESPECIALLY THE NUMBER TWO (2). *TT
30092004-08-25. Service bulletin. ELECTRICAL SYSTEM:IGNITION. SERVICE VME - IP TOP PAD TO TRIM PLATE GAP. *MJ

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