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Service bulletins for the 2004 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.

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

By type

By component

By trouble code

Bulletins, newest first
7022005-09-09. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH. IGNITION KEY WILL NOT COME OUT OF THE IGNITION LOCK CYLINDER. *TT
6112005-09-06. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. TIRE PRESSURE MONITOR RESET/LEARN-WHEN THE PRESSURE IN THE AFFECTED TIRE WAS SET TO SPECIFICATION ON SOME VEHICLES, THE CHECK TIRE PRESSURE AND OR XX TIRE HIGH/LOW DISPLAY IS CANCELED WITHIN 20 SECONDS OF THE PRESSURE ADJUSTMENT. *SC
6092005-09-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. OPERATING CHARACTERISTICS OF 5L40E/5L5OE TRANSMISSIONS. *SC
055242005-05-17. Service bulletin. ELECTRICAL SYSTEM. UCM REPROGRAM. *EH
050846006A2005-05-14. Service bulletin. EQUIPMENT. INFORMATION ON UPGRADING CERTAIN ONSTAR GENERATION 5 ANALOG/DIGITAL-READY SYSTEMS TO ONSTAR GENERATION 6 DUAL-MODE (ANALOG/DIGITAL). *TT
0508420032005-05-14. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HIGH INTENSITY DISCHARGE (HID) HEADLAMPS - DISPOSAL INSTRUCTIONS. *TTT
0507300072005-05-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION DOES NOT STAY IN SPORT MODE AFTER IGNITION IS CYCLED. *TT
0506040162005-05-13. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE WILL NOT CRANK. *TT
32682005-05-12. Service bulletin. POWER TRAIN. INTERMITTENT UNWANTED DOWNSHIFT, NO UPSHIFT 5L40E/5L50E. *TT
031020052005-05-10. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE CONTROL MODULE ECM REPROGRAM. *EH
08042005-04-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LIFE SYSTEM RESET PROCEDURES - CARS. *NM
33072005-04-21. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. NO CRANK NO START. *TT
0507300012005-04-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION FOR DELAYED SHIFT ENGAGEMENT FROM PARK TO DRIVE. *EH
0508610012005-04-19. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:UPPER ARM. AVAILABILITY OF UPPER CONTROL ARM BRACKET SERVICE KIT FOR CAMBER ADJUSTMENTS. *TT
0508500032005-04-19. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. HEATED SEAT INOPERATIVE AFTER REPAIR WITHIN ONE WEEK OF USAGE. *TT
0406030152005-04-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NO START, DISCHARGED BATTERY. *TT
0406030142005-04-19. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. DIAGNOSING A NO CRANK AND NO START CONDITION DUE TO DISCHARGED BATTERY. *EH
0406030142005-04-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DIAGNOSING A NO CRANK AND NO START CONDITION DUE TO DISCHARGED BATTERY. *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
111720032005-04-13. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. TWO DIFFERENT DESIGN FUEL SYSTEMS. *EH
040432005-04-06. Service bulletin. SUSPENSION. WASHERS THAT ARE USED ALONG WITH NUTS TO ATTACH THE LOWER CONTROL ARM WERE MADE OF THE WRONG STEEL MATEIRAL. THESE WASHERS MAY FRACTURE AND BECOME LOOSE OR FALL AWAY FROM THE VEHICLE MAKING IT POSSIBLE FOR THE CONTROL ARM TO SEPARATE. PRODUCT SAFETY RECALL 04043. GM ADMINISTRATIVE MESSAGE. *TT
022620042005-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY OR BATTERY GOES DEAD OVERNIGHT. *TT
021020042005-04-06. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. COLD POWER STEERING SQUEAL OR SQUAWK NOISE ON STARTUP. *TT
0404170032005-03-12. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. DRIVELINE VIBRATION MOAN NOISE AT HIGHWAY SPEEDS. *EH
0406040772005-03-12. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. NO START, INACCURATE FUEL GAUGE. *TT

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