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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
017062004-04-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. FRONT BRAKE GRIND NOISE. SIT BULLETIN 1456746. *TT
017812004-04-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 3.6L LY7 ENGINE- RATTLE NOISE COMING FROM THE ENGINE.*MR
030844005B2004-03-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE. *TT
0307300592004-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. LOSS OF DRIVE OR REVERSE, LOSS OF TRANSMISSION FLUID, NOISE WHEN SHIFTED INTO DRIVE OR REVERSE. *TT
030848005A2004-03-04. Service bulletin. EQUIPMENT. COMPASS ZONE ADJUSTMENT AND CALIBRATION PROCEDURE DURING PRE-DELIVERY INSPECTION. VARIOUS MODELS INCLUDING 2002-2004 LIGHT DUTY TRUCKS. *TT UPDATE TO INCLUDE 2005 BUICK ALLURE. *TT
0301380192004-03-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. UNDERHOOD AIR CONDITIONER RATTLE NOISE HEARD ON ACCELERATION OR A SUDDEN LOSS OF AIR CONDITIONER SYSTEM PERFORMANCE. *TT THIS BULLETIN REPLACES 03-01-38-019 DATED 11-01-2003. TO INCLUDE VARIOUS MODLES INCLUDING 2002-2004 COMMERCIAL UPFITTER CHASSIS VEHICLES. *TT
014922004-03-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. POOR OR NO HVAC HEAT. SIT BULLETIN 1401099. *TT
01463A2004-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40 AND 5L50E AUTOMATIC TRANSMISSION SERVICEABLE COMPONENTS. SIT BULLETIN 1400878. *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
015002004-03-01. Service bulletin. UNKNOWN OR OTHER. OBTAINING MODULE INFORMATION ON A LAN-BASED VEHICLE AND THE TECH 2. SIT BULLETIN 1402209.
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
015722004-02-25. Service bulletin. FUEL SYSTEM, GASOLINE. RETURNLESS FUEL SYSTEM. SERVICE VME. SIT BULLETIN 1412497. *TT
1491B2004-02-24. Service bulletin. ELECTRICAL SYSTEM. THE TECH 2 CANNOT COMMUNICATE WITH GM-LAN MODULES. SIT BULLETIN 140895. *TT
0305250092004-02-11. Service bulletin. SERVICE BRAKES, HYDRAULIC. SERVICE PROCEDURE GUIDELINE FOR LOW PEDAL/AIR IN SYSTEM CONDITIONS. *TT *AR
0306040642004-02-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ROUGH IDLE AFTER COLD START. *TT
0308630042004-02-10. Service bulletin. STRUCTURE:BODY:HOOD. ELIMINATION OF LH HOOD ASSIST ROD. *TT THIS BULLETIN REPLACES PREVIOUS BULLETIN DATED 12/01/2003. *TT
1020032004-01-23. Service bulletin. TIRES:SIDEWALL. FIELD ACTION 03049 - BULGE OR CRACK MAY APPEAR ON THE INNER SIDEWALL OF THE TIRES. INFORMATION. GM VOICEMAIL LOG. *TT
030864026B2004-01-03. Service bulletin. STRUCTURE:BODY. FRONT SIDE DOOR WINDOW FRAME APPLIQUE APPEARANCE DISCOLORED/SUN FADED/MOTTLED. *TT
0306040602004-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW SPARK PLUGS AND GAPPING. VARIOUS MODELS INCLUDING PONTIAC GTO 2004. *TT
030492003-12-16. Service bulletin. TIRES:SIDEWALL. TIRE INNER SIDEWALL CRACK/BULGE. CUSTOMER SATISFACTION PROGRAM BULLETIN. *TT
014322003-12-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION POOR ACCELERATION, PERFORMANCE. *TT
0308640272003-12-05. Service bulletin. STRUCTURE:BODY:DOOR. SPOTTING/DISCOLORATION ON WINDOW BELT OUTER SEALING STRIP. *TT
0308640262003-12-05. Service bulletin. STRUCTURE:BODY:DOOR. FRONT/REAR DOOR APPLIQUE APPEARANCE DISCOLORED/SUN FADED/MOTTLED. *TT
030864026A2003-12-03. Service bulletin. STRUCTURE:BODY. FRONT SIDE DOOR WINDOW FRAME APPLIQUE APPEARANCE DISCOLORED/SUN FADED/MOTTLED. *TT

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