Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 1999 Cadillac Deville owners, lightly cleaned up (personal details are redacted by NHTSA).
Tl* the contact owns a 1999 Cadillac Deville. While driving approximately 35 MPH, the vehicle stalled without warning. The vehicle restarted; however, the failure recurred on several occasions. The vehicle was taken to the dealer, but the failure was unable to be determined. The contact retrieved codes from the on board computer: pass key open/shorter pellet, pass key wrong and fuel sensor feedback shorted high. The vehicle was not repaired. The contact stated that the VIN was not included in NHTSA campaign number: 14V355000 (electrical system). The manufacturer was made aware of the failure. The approximate failure mileage was 45,000.
Tl contact owns a 1999 Cadillac Deville. The contact stated that while at a mechanic for a routine service, the vehicle failed to start. The vehicle was towed to a dealer and an auto repair center. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 107,000.
While starting vehicle engine backfired. Then fire started coming from under the hood. The under hood padding was covered with a flammable material. This caused the fire to burn through the paint on the outside of the hood.
I was driving light came on car failed to stop pulled toone side took it to rinkle Cadillac was told it was ABS module covered by GM they had recall went back several times finally the y told they could not get part not to drive car in wet weather or winter car is own by senior lady bought new only 70000miles kept in garage car is listed fleetwood limited limited amount made this is my second time applying never got answer yet my husband wrote in first time.
While driving the vehicle stalled without warning. When this occurred the vehicle lost power brakes and steering and was difficult to steer. The vehicle was driven to the dealership. The stalling was related to a failure in the main computer chip. The dealership is awaiting parts to service the vehicle. They are also going to re-clean the engine because of excessive oil consumption. The EGR valve failed and caused the vehicle to stall.
Tl* the contact owns a 1999 Cadillac Deville. The contact stated while driving approximately 10 MPH, the engine stalled with the illumination of the warning indicator. The vehicle restarted after being shifted into neutral. The failure recurred four times. The vehicle was taken to an authorized dealer, who was unable to duplicate the problem. The manufacturer was notified of the defect. The approximate failure mileage was 60,000. The VIN was unavailable.
First problem was the battery short on 5-26-99, then on 6-15-99 air bag light came on, stating to service air bag. Vehicle was taken to dealer and I was advised that there was no problem with airbag system. On 7-7-99, air bag light came on again. Vehicle taken to dealer and again advised that nothing was wrong,l just a faulty light. They also stated that the air bag would never deloy unlesss there was an accident. On 7-29-00 while stopped at a red light. Airbag service light came on, and air bagsdeloyed immediately on drivers side door. Vehicle taken to dealer and left for 27 days. GMC stated this has never happened to another vehicle. As I can see they lied to me, it has happened. I have a lawsuit pending with them since 11-29-99 requesting they buy back my vehicle. Nothing has been heard from since. On 11-1-99 fuel gauge sensor went out and had to be replaced. …
Passenger's side mirror will not stay adjusted. Consumer has taken it into dealer about 15 times for electrical problems. After adjusting mirror, and turning away, and when looking at mirror again, consumer May be looking at the sky. Consumer feels this is unsafe because when changing lanes, driver doesn't know if another car is coming or not. Also, door locks, will lock consumer out of vehicle. When vehicle is first started in the morning, it feels like it is turning on 6 cylinders. Door locks do not work properly, sliding door has been opened while vehicle has been in motion, remote unlock button inoperable. Power window needed adjusted. Consumer states there is a loud noise in the front of the vehicle, dealer has made adjustments to front and rear caster, camber, and toe in. Dash blinks in and out, dealer found grounds to battery were corroded. …
Vehicle stalls at between 25 and 32 MPH after coasting or braking gently from 50 plus MPH. Took to dealer on 09/28/00 who said it was dirty fuel injection system, system cleaned. Dealer wanted owner to drive the car for 500 miles to see if the prblem was fixed. At 300 miles,owner's son and wife both had condition occure 10/01 and 10/02/00 during a turn which did not result in any problem but the potential for an accident is high. Owner was able to recereate the problem 5 times in one day (10/03/00) sent to dealer on 10/04/00 who indicated that there was a service bulletin to replace a crank shaft sensor. This was done on 10/04/00. Problem is back on 10/06/00 same condition. Dealer informed awaiting response to the stalling problem.
Consumer states that the service ride system and service stability lights illuminated, the stability/ABS have engaged while driving, this causes vehicle to decelerate significally, dealer has replaced the steering wheel sensor, repaired separated link at the left front position sensor and cleaned the corroded grounds located at the electronic braking and traction control module, dealer has not been able to remedy the problem.
Electrical complaints in other Deville years
Frequently asked questions
How common are electrical problems on the 1999 Cadillac Deville?
NHTSA has 20 complaints about the electrical system of the 1999 Cadillac Deville, 11% of the model year's 187 complaints. The component named most often is ignition (3 mentions).
Is there a recall for 1999 Cadillac Deville electrical problems?
No. NHTSA lists no electrical system recall for the 1999 Cadillac Deville, though it has 1 recall for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 1999 Cadillac Deville electrical problems start?
Half of the complaints with a recorded mileage happened before about 58,000 miles.
Is it dangerous?
Owners linked 0 crashes, 2 fires and 1 injury to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.