1999 Cadillac Deville problems & reliability
187 owner complaints filed with NHTSA for the 1999 Cadillac Deville, alongside 1 safety recall campaign. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
23 complaints report injuries (25 injured, 3 deaths reported).
Federal crash records (FARS 2020–2023): 1999 Cadillac Deville vehicles were involved in 13 fatal crashes with 9 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags | 49 | 26% |
| Engine and Engine Cooling | 47 | 25% |
| Electrical System | 20 | 11% |
| Service Brakes, Hydraulic | 15 | 8% |
| Steering | 13 | 7% |
| Vehicle Speed Control | 11 | 6% |
| Suspension | 9 | 5% |
| Fuel System, Gasoline | 8 | 4% |
| Tires | 8 | 4% |
| Structure | 6 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 66,278 miles (middle 50% between 39,500 and 91,000 miles), based on 68 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 1999 Cadillac DeVille. The contact stated while driving 65 MPH, the vehicle started overheating. The contact was able to pull over and had the vehicle was towed to the dealer. The contact was informed of an oil leak. The contact stated that the water pump, thermostat, reserve tank, and the stretch…”
Engine · filed Jul 13, 2022
“Hi.my car cadillac de ville de eleganсе1999 42000 miles 1 time changed the wheel. Tell us what the initial rating of this car was .corresponding to the euro 4 class ,to introduce it to europe?who can give you a security certificate?thanks”
Unknown OR Other · filed Oct 4, 2020
“Car overheated while on freeway engine turned off left me with no steering or brakes.when car was bulit too short. Of header bolts were user.”
Unknown OR Other · filed Aug 10, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- INADVERTENT OF SIDE IMPACT AIR BAG
Engineering Analysis EA00004 · opened Feb 15, 2000 · closed Sep 28, 2000 · led to recall 00V217000
- INADVERTENT DEPLOYMENT OF SIDE AIR BAG
Preliminary Evaluation PE99061 · opened Sep 27, 1999 · closed Feb 15, 2000
Technical service bulletins
80 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1999 Cadillac Deville. The 10 most recent:
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17-NA-073 · Service Bulletin/Repair Instructions · issued Feb 21, 2023
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723F · Service Bulletin/Repair Instructions · issued Jan 14, 2022
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723D · Service Bulletin/Repair Instructions · issued Jan 31, 2020
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696E · Service Bulletin/Repair Instructions · issued Nov 22, 2019
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17NA073 · Service Bulletin/Repair Instructions · issued Sep 18, 2019
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696D · Service Bulletin/Repair Instructions · issued Sep 5, 2019
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17NA073 · Service Bulletin/Repair Instructions · issued Feb 15, 2019
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696C · Service Bulletin/Repair Instructions · issued May 31, 2018
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723C · Service Bulletin/Repair Instructions · issued Sep 20, 2017
This warranty administration bulletin provides policy information with the field action courtesy transportation policy.
17-NA-073 · Service Bulletin/Repair Instructions · issued Mar 15, 2017
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 1999 Cadillac Deville has 1 NHTSA recall campaign — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1999 Cadillac Deville?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 66,278 miles — budget accordingly if the car is approaching that mileage.