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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
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
0406030032004-08-13. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY/BATTERY GOES DEAD OVERNIGHT. *TT
0302360012004-08-12. Service bulletin. STEERING. SERVICE STEERING SYSTEM MESSAGE ON, DIAGNOSTIC TROUBLE CODE (DTC) C0450 OR C1241 SET. *TT
01278B2004-07-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INTERMITTENT STALL. *TT
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
00372D2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL. ONSTAR SYSTEM IS ATTEMPTING AND/OR COMPLETING PHONE CALLS WHICH THE OPERATOR OF THE VEHICLE DID NOT INITIATE. *TT
015942004-06-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40E HARSH 3- 2 DOWN SHIFT.*MR
019692004-05-19. Service bulletin. ELECTRICAL SYSTEM. RUNS OUT OF FUEL WHEN GAUGE READS 1/4 TANK, POSSIBLE DIAGNOSTIC TROUBLE CODE P1172. *MR
018312004-05-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40E, 5L50E AUTOMATIC TRANSMISSION REVISED FLUID LEVEL CHECKING PROCEDURE. *MR
018282004-05-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INTERMITTENT DEAD BATTERY- GOES DEAD OVERNIGHT. *MR
018882004-05-05. Service bulletin. STEERING. STEERING WHEEL CONTROLS FOR ONSTAR FUNCTIONALITY INCORRECT AFTER RADIO REPLACEMENT. *MR
016922004-04-30. Service bulletin. EQUIPMENT. APPEARANCE OF NAVIGATION RADIO PRESETS WITH RDS. SIT BULLETIN 1442768. *TT
016962004-04-27. Service bulletin. EQUIPMENT:ELECTRICAL. LONG WAVE BAND INFORMATION WITH NAVIGATION RADIO. SIT BULLETIN 1450105. *TT
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
0305230062004-03-03. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. THIS BULLETIN IS BEING ISSUED TO REVISE THE FRONT BRAKE CALIPER BRACKET BOLT TORQUE SPECIFICATION. *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
01108A2004-02-28. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT NO POWER, STALL, MALFUNCTION INDICATOR LAMP (MIL) WITH TPS, TAC, TCM DIAGNOSTIC TROUBLE CODES (DTCS) SET P0120, P0121, P0122, P0123, P0220, P0221, P0223, P0225, P0226, P0227, P0228, P0638, P0700, P1779, P1780, P1995, P2119, P2176. *TT
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *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

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