Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
58,612 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Cadillac DeVille transmission problems

transmission problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Cadillac DeVille:

Unsubscribe any time. We don't sell/share your email.

2003 Cadillac DeVille Owner Comments

problem #8

May 062013


  • 65,000 miles


The contact owns a 2003 Cadillac Deville. While inspecting the vehicle, the contact noticed that transmission fluid was leaking. A private mechanic stated that the transmission needed to be replaced and repaired the vehicle. The manufacturer was notified. The failure mileage was 65,000.

- Richmond , IL, USA

problem #7

Jan 022013

DeVille 8-cyl

  • Automatic transmission
  • miles
2003 Cadillac sedan Deville. Consumer writes in regards to transmission problems. The consumer stated the engine light illuminated. A diagnostic test revealed, the port converter control solenoid was sticking. Updated 01/15/13

- Collegedale, TN, USA

problem #6

Nov 132010

DeVille 8-cyl

  • 81,000 miles
2003 Deville 83K miles taken for emission test will not past until code PO741 is fix. PO741 torque converter clutch excessive slip transaxle cost $2000 to $4500 to repair but is not an emission part.

- Bridgeport, CT, USA

problem #5

Jun 102010


  • 90,000 miles


Service engine soon light comes on frequently.....I had vehicle checked a several auto shops and received the diagnosis that my torque converter was possibly slipping. I was quoted between $900 to $ 2100 to repair. I stated for this price I could really just buy a remanufactered transmission. This is ridiculous, there has to be a recall message out there to help fellow owners. I have seen this happening to many other owners who in turn refuse to get this service as it can be very costly.

- Apg, MD, USA

problem #4

Dec 142009

DeVille 8-cyl

  • 82,000 miles
The service engine light came on in my 2003 V-8 Cadillac Deville, at 82,000 miles. Dealer diagnosed transmission problem; replaced torque converter and reworked lower valve body. Dealer charged $2241 for repairs.

- Louisville, KY, USA

problem #3

Jul 112007

DeVille 8-cyl

  • Automatic transmission
  • 65,900 miles
2003 Cadillac Deville with approx. 65,900 miles on 07/11/07. The "service engine soon" warning light appeared on vehicle control panel & took vehicle to dealership same date 07/11/07. Dealer performed oil change & informed that entire transmission is about to fail & quoted $4,027 for repairs. Dealer refused to honor warranty past 50,000 miles & informed entire cost was the responsibility of the customer. GM was contacted & refused to provide any financial or repair assistance for defect and repeatedly delayed any decision until approximately 08/02/07 (after repeated attempts by customer to contact/resolve problem), other than a $1,000 customer loyalty certificate to buy a new car on approx 8/02/07. GM representative called & recorded phone conversation with customer without customer advance knowledge or consent on 8/01/07 & 8/02/07. Customer had gone to dealership (2nd time) & dealer service mgr. Refused to assist in any way (in person) & stated he will not help & stated his displeasure that GM was contacted. Cadillac was therefore taken to aamco at Cadillac owner's expense for complete transmission replacement. Another issue, "check coolant level light" had been brought to dealership attention (while previously under warranty) & told us to disregard/not worry about it approximately last three times car was in to dealership for oil changes (over approximately six months). Customer was told this is not any safety issue & to disregard "check coolant level light". issue remains unresolved due to assurance of safety from dealership.

- Stuart, FL, USA

problem #2

Feb 202007

DeVille 8-cyl

  • Automatic transmission
  • 85,000 miles
The "service engine soon" appeared many times on the dash of my 2003 Cadillac Deville. After 4 diagnoses it was decided that the transmission was defective and required a $4200 repair.

- Corona De Tucson, AZ, USA

problem #1

Aug 212004


  • Automatic transmission
  • miles
Multiple failures with 2003 Cadillac. The check engine light illuminated, cruise control ceased and the transmission had to be repaired.. the consumer was traveling in a heavy rain storm when the head lights and dash board lights went out. The head lights eventually came back on until another heavy rain and they went out again. Consumer was told the water pump was leaking and that was the reason the check coolant level reading was being displayed.

- Oro Valley, AZ, USA

Not what you are looking for?