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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: Automatic transmission are shown. Show all

Bulletins, newest first
06-00-89-031D2021-09-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
02-07-30-052J2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. This informational bulletin provides technicians with information regarding automatic transmission oil cooler flow test essential tool J-45096 TransFlow®.
33922005-09-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE 5L40E AND 5L50E AUTOMATIC TRANSMISSION MAY EXPERIENCE A CONDITION OF HIGH TCC SLIP SPEED AND OR DTC P0741. *TT UPDATED 09-26-07. *KB
6102005-08-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. TRANSMISSION OIL COOLER LINE FITTING. GM TECH LINK. *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
0407300122004-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FLUID CHECKING PROCEDURE FOR 5L40-E AND 5L50-E AUTOMATIC TRANSMISSIONS. *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
015942004-06-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 5L40E HARSH 3- 2 DOWN SHIFT.*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
014322003-12-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION POOR ACCELERATION, PERFORMANCE. *TT
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
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
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.