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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
31272004-11-03. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE WHINE NOISE. TC
31272004-11-03. Service bulletin. STRUCTURE:BODY:DOOR. REVISED AUTOMATIC DOOR LOCK PERSONALIZATION INFORMATION. *TC
30382004-10-14. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. VIEWING XM RADIO CHANNEL INFORMATION WITH BASE RADIOS. *TT
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
30122004-08-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HOOT,WHINE, WHISTLE NOISE COMING FROM DASH. *MJ
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
30082004-08-24. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. LOW SPONGY BRAKE PEDAL. *MJ
30062004-08-24. Service bulletin. SUSPENSION. PERFORMANCE SHOCK PACKAGE AVAILABLE. *MJ
30252004-08-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 04 MODEL YEAR 4.8.5.3.7.6.0 GEN III ENGINE PISTON PIN INFORMATION. *MJ
30272004-08-23. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. HARD CLUTCH PEDAL AND/OR HYDRAULIC SYSTEM FAILURE AFTER SERVICING THE PRESSURE PLATE. *TT
0409400022004-08-17. Service bulletin. SEAT BELTS. SEAT BELT STOP BUTTON KITS AVAILABLE. *MJ
0408660032004-08-17. Service bulletin. STRUCTURE:BODY:TRUNK LID. REAR COMPARTMENT LID DOES NOT POP OPEN ENOUGH (REPLACE LOCK STRIKER ASSEMBLY). *MJ
0407300122004-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FLUID CHECKING PROCEDURE FOR 5L40-E AND 5L50-E AUTOMATIC TRANSMISSIONS. *TT
0406050022004-08-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE/BUZZ TYPE NOISE FROM UNDER ENGINE COMPARTMENT DURING ACCELERATION / DECELERATION. *TT
0406040112004-08-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). NEW PROCEDURAL REQUIREMENTS FOR POWERTRAIN CONTROL MODULE (PCM) REPLACEMENT. *TT
0406030032004-08-13. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY/BATTERY GOES DEAD OVERNIGHT. *TT
0402320022004-08-12. Service bulletin. STEERING. POWER STEERING COLD START SQUAWK/SQUEAL TYPE NOISE WHEN OUTSIDE TEMPERATURE BELOW -24 DEGREE C (-12 DEGREE F). *TT
0302360012004-08-12. Service bulletin. STEERING. SERVICE STEERING SYSTEM MESSAGE ON, DIAGNOSTIC TROUBLE CODE (DTC) C0450 OR C1241 SET. *TT
0408490172004-08-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL TEMPERATURE GAUGE WARNING. *MJ THIS BULLETIN REPLACES PREVIOUS BULLETIN NUMBER 04-08-49-017 DATED 05/01/2004. *TT
01491B2004-07-07. Service bulletin. ELECTRICAL SYSTEM. TECH 2 WILL NOT COMMUNICATE WITH THE VEHICLE. *MJ
008362004-07-06. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40E 5L50E TRANSMISSION- HIGH TCC SLIP SPEED AND OR DIAGNOSTIC TROUBLE CODE (DTC) P0741 HIGH TCC SLIP SPEED. *MJ
00519D2004-07-02. Service bulletin. FUEL SYSTEM, OTHER. RUNS OUT OF FUEL WHEN GAUGE READS 1/4 TANK. *TT
01675B2004-07-02. Service bulletin. ELECTRICAL SYSTEM. LOOSE GROUND CAUSING MISFIRE. *TT

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