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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: Transmission and driveline are shown. Show all

Bulletins, newest first
0404170032005-03-12. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. DRIVELINE VIBRATION MOAN NOISE AT HIGHWAY SPEEDS. *EH
0407310052005-01-11. Service bulletin. POWER TRAIN. CLUTCH PRESSURE PLATE WEAR INDICATOR ADJUSTMENT. *TT
31682004-12-02. Service bulletin. POWER TRAIN:DRIVELINE:DRIVESHAFT. SINGLE ORDER PROPSHAFT SPEED VIBRATION AT HIGHWAY SPEEDS. *EH
30512004-11-17. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. HOWL OR WHINE NOISE FROM THE REAR AXLE ON ACCEL AND/OR DECEL. *TT
30912004-11-05. Service bulletin. POWER TRAIN. OPERATING CHARACTERISTICS OF 5L40E/5L50E TRANSMISSIONS. *SC
3067A2004-10-08. Service bulletin. POWER TRAIN. UNACCEPTABLE SHIFT QUALITY AFTER TRANSMISSION REPAIR OR SOFTWARE/HARDWARE CHANGE. *TT
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
30272004-08-23. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. HARD CLUTCH PEDAL AND/OR HYDRAULIC SYSTEM FAILURE AFTER SERVICING THE PRESSURE PLATE. *TT
0407300122004-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FLUID CHECKING PROCEDURE FOR 5L40-E AND 5L50-E AUTOMATIC TRANSMISSIONS. *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
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
019872004-05-19. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. LS6 6SP MANUAL TRANSMISSION CTS-V DRIVELINE CLUNK DURING LOW SPEED MANUEVERS. *MR
018312004-05-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40E, 5L50E AUTOMATIC TRANSMISSION REVISED FLUID LEVEL CHECKING PROCEDURE. *MR
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
01463A2004-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40 AND 5L50E AUTOMATIC TRANSMISSION SERVICEABLE COMPONENTS. SIT BULLETIN 1400878. *TT
014322003-12-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION POOR ACCELERATION, PERFORMANCE. *TT
020730012B2003-04-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HYDRA-MATIC 5L40-E SERVICEABLE COMPONENTS AND LABOR OPERATIONS. ORIGINAL NOT YET RECEIVED. *TT BULLETIN 02-07-30-012B NOT YET RECEIVED. *TT
0207300022002-06-20. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON 5L40E AUTOMATIC TRANSMISSION OPERATING CHARACTERISTICS. *SLC *AR

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