1999 Cadillac SLS Electrical system Problems
- Complaints
- 2about this part
- Share
- 40%of 5 total for the year
- Median mileage
- 52,969miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 1999 Cadillac SLS, 40% of the 5 complaints for this model year. Where a mileage was given, the median is 52,969 miles.
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.
“While my wife was driving the car at about 38 miles an hour the car just died or cut out ( the ignition system quit ), on her. This happened on two different times for her and once for myself.”
NHTSA complaint #10578924, filed 2014-04, 52,969 miles“It was determined by my local Cadillac service department that the alternator was faulty, drawing excessive current while the engine was off. I mentioned the recall on this model and they said it had already been replaced so it is not covered. I feel that this is an ongoing problem and should be replaced under this program.”
NHTSA complaint #10442304, filed 2012-01Electrical system: other model years
Other parts of the 1999 Cadillac SLS
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsFuel system
1 complaints
← All problems reported for the 1999 Cadillac SLS
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