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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

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
030730024A2003-12-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. NO REVERSE CONDITION. *TT
0307300242003-09-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. NO REVERSE CONDITION, DIAGNOSTIC TROUBLE CODE (DTC) P0722. *TT
0304200042003-09-29. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REVISED TORSIONAL BACKLASH REAR AXLE SPECIFICATIONS. *TT
0304170042003-04-24. Service bulletin. POWER TRAIN:DRIVELINE. REVISED PROPELLER SHAFT REPLACEMENT PROCEDURE. *TT
0304170032003-04-24. Service bulletin. POWER TRAIN. VIBRATION / NOISE FROM AUTO/MANUAL SHIFTER DURING DRIVE/GEAR SHIFTS. *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
020730033A2003-02-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TRANSMISSION CONTROL MODULE (TCM) WILL NOT COMMUNICATE WITH NON-TECH 2 SERVICE OR TEST EQUIPMENT. *TT
0207300332003-02-12. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TRANSMISSION CONTROL MODULE (TCM) WILL NOT COMMUNICATE WITH NON-TECH 2 SERVICE OR TEST EQUIPMENT. *TT
020729006A2003-02-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. NOISE, WIND NOISE, FLUTTER AT APPROXIMATELY 40 MPH. *TT
0508022002-11-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. THIS MESSAGE CONCERNS VEHICLES WITH THE MANUAL TRANSMISSION AND A CONCERN WITH A RATTLE OR FLUTTERING NOISE WHILE DRIVING IN FIFTH GEAR. *TT
0207300262002-10-10. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. CONCERNS WITH LAUNCH SHUDDER FELT ON HARD ACCELERATION. *TT
0207290062002-10-10. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SOME CUSTOMERS MAY COMMENT THAT A FLUTTERING OR WIND NOISE IS HEARD WHILE DRIVING IN 5TH GEAR ABOVE 40 MPH. *TT
0207290072002-10-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUBJECT REGARDING REVISED TRANSMISSION REPLACEMENT PROCEDURE AND FASTENER TIGHTENING SPECIFICATIONS. *TT
0207300122002-07-12. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON THE HYDRA-MATIC 5L40E TRANSMISSION. *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.