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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
24-NA-1412024-08-15. Service bulletin. POWER TRAIN. GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
PI1394B2024-02-02. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
23-NA-1532023-09-26. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
PIP5640A2022-10-17. Service bulletin. POWER TRAIN. This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
06-00-89-031H2022-10-11. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
22-NA-1812022-09-19. Service bulletin. POWER TRAIN. This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the engine or transmission.
06-00-89-031D2021-09-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
02-07-30-052I2018-06-04. Service bulletin. POWER TRAIN; EQUIPMENT. This informational bulletin provides information for Automatic Transmission Oil Cooler Flow Test Essential Tool J-45096 TransFlow.
10-04-20-001F2017-08-15. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. This technical bulletin provides a procedure to replace the rear differential fluid if the rear axle has a clunk or chatter noise on turns.
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®.
SB-10-04-20-001E2013-06-25. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. CADILLAC: REAR AXLE IS MAKING A CHATTER NOISE DURING TURNING. MAY ALSO MAKE A CLUNKING SOUND DURING TURNING AS WELL. *KB
36712006-02-17. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REAR AXLE PINION SEAL MAY EXPERIENCE A FLUID LEAK CONDITION. *TT UPDATED 04-26-07. *KB
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
32682005-05-12. Service bulletin. POWER TRAIN. INTERMITTENT UNWANTED DOWNSHIFT, NO UPSHIFT 5L40E/5L50E. *TT
101020022005-04-08. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. MANUAL TRANSMISSION RATTLE OR FLUTTERING NOISE WHILE DRIVING IN FIFTH GEAR. *EH
30512004-11-17. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. HOWL OR WHINE NOISE FROM THE REAR AXLE ON ACCEL AND/OR DECEL. *TT
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
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

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