Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2000 Cadillac Deville owners, lightly cleaned up (personal details are redacted by NHTSA).
Tl* the contact owns a 2000 Cadillac Deville. While driving 35 MPH, an abnormal odor of burning oil was noticed within the vehicle. The failure occurred constantly. The vehicle was taken to a dealer where it was diagnosed that oil was leaking onto the manifold. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 85,000. Updated 12/03/15.updated 02/01/16
Tl* the contact owns a 2000 Cadillac Deville. While driving approximately 25 MPH, the vehicle stalled and the service engine warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the crankshaft position sensor a and crankshaft position sensor b needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 99,000. . .. .updated 07/21/15 the consumer stated the vehicle was not included in the recall. The manufacturer offered to pay for a portion on the repairs. The consumer would like for the vehicle to be included in the recall. Updated 11/9/2015
The vehicle stalled intermittently. The brakes failed, and the vehicle was involved in two front end collisions. There was a funny noise in the engine at idle speed. The engine would lose power and stall. The service manager suggested that there were problems with the 2000-2004 model with this same problem. The front brake linings were worn, the dash pad was peeling at the leading edge near the defrost edge near the defrost grille due to delamination and the coin holder housing had come apart and split at the seam. The crankshaft position sensor was replaced.
Tl* the contact owns a 2000 Cadillac sts. While driving 65 MPH, the engine cooling system overheated without warning. The failure recurred twice. The vehicle was taken to the dealer. The technician diagnosed that the head gasket needed to be replaced. The vehicle was not repaired. The VIN was not provided. The manufacturer was notified of the failure. The failure mileage was 101,000. Updated 05/06/16
2000 Cadillac Deville north star with 50 thousand miles....uses oil and has since 30 thousand miles... Cates motor company of madisonville, kentucky says that using oil is normal for the north star engine. Using oil is not normal! I have never owned anything but cadillacs and they didn't use oil until 100+thousand miles. My 88 Cadillac sedan Deville-gold executive has 203,000 miles and uses a quart every 3,000 miles! A 2000 Cadillac Deville with a north star engine should not be using oil... Using oil is not normal. Why is cates motor company of madisonville, ky. Telling me it is normal? Why aren't they prepared to fix the problem of using oil in a $50,000.00 c-a-d-I-l-l-a-c owned by a life time patriot? My Cadillac's id # [redacted]. I have called Cadillac... Left message with automated service... No response. I have e-mailed Cadillac with no response. …
Engine began overheating and took it to our mechanic who replaced the water pump. Engine continued to overheat and same mechanic replaced all of the upper seals. Eventually, a pressure test and camera insert by my mechanic confirmed a blown head gasket. Confirmed that result with pepe Cadillac in white plains, ny. Checked the price to have the head gaskets replaced, but since this engine has to be removed from the bottom of the vehicle, the costs are outrageous and the only acceptable fix for these aluminum heads are bolts rather than the GM serts. Bad engine design by GM since their bolts were too short and the bite was not large enough in the block to prevent the head gaskets from blowing. Sad epitaph for a car with only 65K lightly driven miles on it having spent all of it's off road life in our garage. …
While driving at 62 MPH vehicle stalled. This caused loss of steering and brakes. Consumer took the vehicle o the dealership several times over the course of a year. The dealer replaced different parts yet the problem recurred. The coolant level light had a poor connection which caused the then it is moist or damp outside the vehicle sputters and stalls. Coolant light to illuminate. Sometimes the door locks would unlock once the vehicle was placed in park, sometimes they didn't. The vehicles heated seat shut off after about five minutes or sometimes they didn't work at all. The information center would reset itself sometimes. The dealer replaced the instrument panel cluster. The exterior driver's side mirror was cloudy which caused poor visibility. The dealer replaced the entire mirror.
Consumer was traveling on the highway and suddenley vehicle accelerated and took off in traffic, consumer had both feet on the brakes, the vehicle did not respond appropriately for brakes, vehicle was out of control. Consumer states that the drivers seat heater is inoperative, driver and passenger front seat belt buckles were out of position, and the passenger side plastic retainer was broke, while pulling into a parking space consumer lost all power steering, dealer replaced rack and pinion, engine is making a knocking noise, while accelerating vehicle started in third gear, which the gears seem to lock up internally, vehicle starts vibrating at approximately 50 MPH, the right center dash A/C vent closes by it self, the night vision lens is cracked and the console holder and latch broke.
Tl* the contact owns a 2000 Cadillac Deville. The contact stated while driving at 25 MPH, the engine would abnormally overheat. The contact received a radiator flush and the water pump was replaced yet the failure persisted. The contact stated he would continuously add anti-freeze to the engine to stop it from becoming excessively hot. The contact took the vehicle to a local mechanic where it was discovered that there was an eight inch fracture in the engine block. The manufacturer advised the contact that because the vehicle was over ten years of age, they would not provide any assistance. The contact was concerned that the engine fracture would potentially cause the entire engine to fail. The vehicle was not repaired. The failure mileage was 52,000.
Driving into my drive way I noticed that my car pulled in very fast. Normally, I idle in my car into the drive way, this time it was much faster and the engine was very accelerated. I parked the vehicle and the engine was accelerated up to 1850rpm. I pressed the gas pedal to free up the throttle, it made is worst. The vehicle RPM increased up to 2835 RPM and stayed stuck at 2835 RPM. After 10 to 15 seconds the RPM slowly dropped down to 1500 RPM and stayed at these revolution. I had to turn off the vehicle. It's normal idle RPM are 675-700rpm. This is a safety hazard for some one that does not know what to do when driving at a busy highway or regular city streets.
Engine complaints in other Deville years
Frequently asked questions
How common are engine problems on the 2000 Cadillac Deville?
NHTSA has 61 complaints about the engine & cooling of the 2000 Cadillac Deville, 27% of the model year's 225 complaints. The component named most often is engine (24 mentions).
Is there a recall for 2000 Cadillac Deville engine problems?
No. NHTSA lists no engine & cooling recall for the 2000 Cadillac Deville, though it has 5 recalls 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 2000 Cadillac Deville engine problems start?
Half of the complaints with a recorded mileage happened before about 62,000 miles, and 17% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 2 fires and 1 injury and 12 deaths to engine & cooling 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.