definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
32,950 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 engine problems

engine problem

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2003 Cadillac DeVille Owner Comments

problem #2

Dec 012015

DeVille 8-cyl

  • miles


2003 Cadillac Deville. Consumer writes in regards to several mechanical defect issues. Consumer sent additional correspondence. The consumer stated the water pump and radiator leaked resulting in a coolant leak, and the engine overheating. An independent mechanic determined the metal brackets holding the left side tank had rusted and caused a crack in the left radiator tank. The engine developed an oil leak from the lower crankcase of the engine block. The oil leak caused a defective design in the lower crank shaft. The mechanic informed the consumer the engine needed to be removed to properly repair the oil leak. Also, the tire pressure light illuminated. The consumer stated that a diagnostic from onstar of the vehicle displayed a malfunctioned airbag. The consumer requested a formal investigation into these issues. The consumer stated that only a $5,000 gift card would be an acceptable reimbursement.

- Shelbyville, IN, USA

problem #1

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

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