2003 Cadillac Deville Vehicle speed control Problems
- Complaints
- 7about this part
- Share
- 5%of 145 total for the year
- Median mileage
- 111,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the vehicle speed control of the 2003 Cadillac Deville, 5% of the 145 complaints for this model year. Where a mileage was given, the median is 111,500 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2003 Cadillac Deville. While driving at 55 MPH, the vehicle accelerated without the accelerator pedal being depressed. The vehicle was taken to the dealer for diagnostic testing. The contact was informed that the throttle vacuum line needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 120,000. Ma 10/15/2015”
NHTSA complaint #10745229, filed 2015-07, 120,000 miles“The contact owns a 2003 Cadillac Deville. When the contact started the vehicle, it shook violently and the speed increased while driving. The dealer replaced the power steering pump, but the failure recurred. The vehicle continued to shake violently and the contact had to apply force to hold the steering wheel while driving. The failure occurred at various speeds. The manufacturer was notified of the failure. The approximate failure mileage was 103,000.”
NHTSA complaint #10627069, filed 2014-08, 103,000 miles“The contact owns a 2003 Cadillac Deville. The contact stated while driving approximately 45 MPH the vehicle accelerated on its own. The vehicle slowed down when the contact depressed the brake pedal but once the brake pedal was released the vehicle accelerated again. The contact continually depressed the brake pedal with excessive force in order to slow the vehicle down. The vehicle was not taken to the dealer for diagnostic testing. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 59,163.”
NHTSA complaint #10504129, filed 2013-03, 59,163 miles“The contact owns a 2003 Cadillac Deville. The contact stated while driving approximately 65 MPH, the vehicle accelerated rapidly and failed to stop when depressing the brakes. While placing the vehicle in neutral, the contact merged onto the emergency lane turned the vehicle off. The vehicle was towed to a private mechanic who stated that once the cruise control was disengaged the accelerator pedal released but no diagnostic test was performed. The vehicle was taken to a dealer where the failure was unable to be replicated. The manufacturer was notified of the failure. …”
NHTSA complaint #10523875, filed 2013-07, 155,000 miles“The contact owns a 2003 Cadillac Deville. The contact stated the accelerator pedal became stuck in the open throttle position while driving 30 MPH and the vehicle began to accelerate rapidly. The contact shifted into park in order to get the vehicle to stop. The contact stated that the brakes would not stop the unintended acceleration. The vehicle was towed to a local mechanic where the contact was advised that the line leading to the throttle was fractured. The vehicle was repaired by the mechanic. The vehicle had not been driven since the repair. The VIN was not available. …”
NHTSA complaint #10363672, filed 2010-11, 200,000 milesVehicle speed control: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2005 | 1 | 1% |
| 2004 | 3 | 2% |
| 2003 | 7 | 5% |
| 2002 | 11 | 6% |
| 2001 | 8 | 5% |
| 2000 | 12 | 5% |
| 1999 | 11 | 6% |
| 1998 | 11 | 5% |
| 1997 | 3 | 1% |
| 1996 | 21 | 10% |
| 1995 | 1 | 1% |
| 1994 | 6 | 5% |
| 1993 | 9 | 10% |
| 1992 | 11 | 8% |
| 1991 | 7 | 8% |
| 1990 | 21 | 28% |
| 1989 | 19 | 40% |
| 1988 | 8 | 29% |
| 1987 | 1 | 3% |
| 1986 | 2 | 9% |
| 1985 | 1 | 5% |
| 1984 | 2 | 33% |
| 1983 | 3 | 60% |
Other parts of the 2003 Cadillac Deville
52 complaintsAir bags
25 complaintsBrakes
16 complaintsEngine
16 complaintsTransmission and drivetrain
14 complaintsSteering
12 complaintsVisibility (wipers, defrost, mirrors)
11 complaintsEngine cooling
10 complaintsFuel system
9 complaintsOther or unknown
7 complaintsBody and structure
6 complaintsEquipment
3 complaints
← All problems reported for the 2003 Cadillac Deville
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology