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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

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
016802004-06-03. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE P0442. *MR *TT
016072004-05-28. Service bulletin. ELECTRICAL SYSTEM:WIRING. WIRING HARNESS PARTS RESTRICTION. *TT
020162004-05-25. Service bulletin. ELECTRICAL SYSTEM. THE TECH 2 CANNOT COMMUNICATE WITH GM-LAN MODULES.*MR
018282004-05-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY- GOES DEAD OVERNIGHT. *MR
019042004-05-05. Service bulletin. ELECTRICAL SYSTEM. CHARGING SYSTEM INOPERATIVE MESSAGE WITH POSSIBLE DIAGNOSTIC TROUBLE CODES (DTC) P0622, P1637. *MR
018792004-05-04. Service bulletin. ELECTRICAL SYSTEM. A REDUCED ENGINE POWER COMPLAINT SETTING THROTTLE CODES - P0121, P0221, P2119, P2122, P2138, P2176. *TT
016892004-04-30. Service bulletin. ELECTRICAL SYSTEM. LOOSE GROUND CAUSING MISFIRE. SIT BULLETIN 1448542. *TT
015042004-03-01. Service bulletin. ELECTRICAL SYSTEM. NO START, STALL, SES, SERVICE STABILITY, OR CLASS 2 DATA SHORT TO POWER OR GROUND. SIT BULLETIN 1403194. *TT
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
015852004-02-25. Service bulletin. ELECTRICAL SYSTEM. POST O2 WATER INTRUSION - P0137, P0138, P0140, P0141, P0157, P0158, P0160, P0161, P2232, AND P2235. SIT BULLETIN 1413806. *TT
1491B2004-02-24. Service bulletin. ELECTRICAL SYSTEM. THE TECH 2 CANNOT COMMUNICATE WITH GM-LAN MODULES. SIT BULLETIN 140895. *TT
014692003-11-25. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) P2176 SET WITH NO OTHER DTC SET AND THE ENGINE CONTROL MODULE (ECM) WILL NOT SUCCESSFULLY COMPLETE THE IDLE LEARN. *TT
014362003-11-21. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT DRIVEABILITY CONDITIONS AND ENGINE WIRING HARNESS CONNECTORS CONCERNS. *TT

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