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Service bulletins for the 2003 Cadillac CTS

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.

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

By type

By component

By trouble code

Bulletins, newest first
0503090012005-05-13. Service bulletin. SUSPENSION. RATTLE NOISE IN REAR END OVER BUMPS. *TT
32682005-05-12. Service bulletin. POWER TRAIN. INTERMITTENT UNWANTED DOWNSHIFT, NO UPSHIFT 5L40E/5L50E. *TT
33702005-05-11. Service bulletin. VEHICLE SPEED CONTROL. INTERMITTENT NO POWER, STALL, MALFUNCTION INDICATOR LAMP WITH TPS TAC, TCM DIAGNOSTIC TROUBLE CODES SET. *TT
08042005-04-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LIFE SYSTEM RESET PROCEDURES - CARS. *NM
0508500032005-04-19. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. HEATED SEAT INOPERATIVE AFTER REPAIR WITHIN ONE WEEK OF USAGE. *TT
030847001A2005-04-19. Service bulletin. EQUIPMENT:ELECTRICAL. CIGAR LIGHTER AND ACCESSORY POWER OUTLETS TIME OUT 10 MINUTES AFTER IGNITION SHUT-OFF OR OUTLETS REMAIN ON AFTER IGNITION SHUT-OFF. *TT UPDATE. *TT
101020022005-04-08. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. MANUAL TRANSMISSION RATTLE OR FLUTTERING NOISE WHILE DRIVING IN FIFTH GEAR. *EH
022620042005-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY OR BATTERY GOES DEAD OVERNIGHT. *TT
0408660022005-03-11. Service bulletin. STRUCTURE:BODY. REAR COMPARTMENT LID APPLIQUE BACK UP HIGH MOUNT STOP LAMP ASSEMBLY APPEARANCE CHANGE INFORMATION. *EH
0408500092005-03-09. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. FRONT HEATED SEAT INOPERATIVE COLD. *EH
0406020032005-03-08. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT BLOCK HEATER CORD EXTENSION AVAILABLE. *EH
0302360022005-03-08. Service bulletin. STEERING. REVISED STEERING WHEEL POSITION SENSOR OR STEERING SHAFT LOWER BEARING REPLACEMENT PROCEDURE AND STEERING WHEEL POSITION SENSOR CENTERING PROCEDURE. *EH
0401390082005-02-17. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. LIMITED ABILITY TO CONTROL WINDSHIELD DEFROSTER TEMPERATURE. *EH
0408640012005-01-04. Service bulletin. STRUCTURE:BODY:DOOR. ITCH/SQUEAK/RATTLE TYPE NOISE FROM DOOR HEADER SEALING AREA WHILE DRIVING. *TT
0408980032004-12-29. Service bulletin. STRUCTURE:BODY. LAMINATED STEELS -- GENERAL INFORMATION AND SPECIFIC REPAIR PROCEDURES FOR LOWER RAIL REPLACEMENT. *TT
0403100132004-12-28. Service bulletin. SUSPENSION. DRIVING CHARACTERISTICS OF REAR-WHEEL DRIVE AND AVAILABLE WINTER TIRES. ALSO INCLUDES THE 2004-2005 CADILLAC CTS-V. *TT
32152004-12-15. Service bulletin. FUEL SYSTEM, OTHER. CHECK ENGINE LIGHT ON DIAGNOSTIC TROUBLE CODE P0446, P0451, OR P0453 MAY HAVE A HARD TO FILL FUEL TANK. *TT
31812004-12-02. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK:SELECTOR DEVICES. EVAP SYSTEM SERVICING. *EH
30512004-11-17. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. HOWL OR WHINE NOISE FROM THE REAR AXLE ON ACCEL AND/OR DECEL. *TT
30442004-11-17. Service bulletin. EQUIPMENT. GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION. *TT
31032004-11-04. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO OPTION CONFIGURATION. (2003 CADILLAC SRX). *JB
30592004-10-08. Service bulletin. EQUIPMENT. WHEN USING ONSTAR PERSONAL CALLING FEATURE, THE CALLER CANNOT BE HEARD ON OUTBOUND CALL ONLY. *TT
30472004-10-08. Service bulletin. EQUIPMENT. 99 THROUGH 05 YEAR VEHICLES, EQUIPPED WITH THREE-BUTTON ONSTAR SYSTEMS. *TT
3067A2004-10-08. Service bulletin. POWER TRAIN. UNACCEPTABLE SHIFT QUALITY AFTER TRANSMISSION REPAIR OR SOFTWARE/HARDWARE CHANGE. *TT
010142004-08-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DRIVELINE/EXHAUST GROWL/MOAN NOISE AT SPEEDS OF APPROXIMATELY 35-45 MPH (56-72 KM/H) IN 5TH GEAR WITH THE TCC APPLIED. *TT

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