1999 Cadillac Seville SLS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Cadillac Seville SLS

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1999 Cadillac Seville SLS Problems

Stalling Due to Failed Crankshaft Position Sensor

The crankshaft position sensor may fail causing the engine to stall intermittently, the Check Engine Light may or may not illuminate.

Check Engine Light Due to Gas Cap Issue

A Loose or worn gas cap may cause Check Engine Light to illuminate.

Replace spark plugs every 100,000 miles

The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.

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1999 Cadillac Seville SLS Questions

Why do my heated seats turn off when traction control turns on? (1 answer)

I can usually turn them on for about 15 minutes and then they kick off and won't turn on again. And my trac on/off button doesn't do anything to help, or anything at all really.

why does my car stall so often with error code p1599 as the only code (1 answer)

whenever i drive my car long enought it stalls espically coming off the expressway it starts right back up and sometimes dies immidately erased codes and the only one that came back was p1599 have any ideal what the problem is mechanic is acting like a idiot

What would cause the car to stop while driving & cause the PCM P0300 & PCM P0151 (1 answer)

I have a 99 cadillac seville that has been having some serious issues. I recently had a new/used engine dropped in the car, a majority of the parts from the old engine were put on the current motor. I had severe misfires (PCM P0300). I changed the spark plugs, replaced all the coils, replaced the...

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1999 Cadillac Seville SLS Reviews

i bought my sls two years ago. had security system fixed, ( was the ignition switch). it now has 221,933k miles on it and runs great.shocks all bad though and cost more to replace than blue book for car.what a shame.other down side to this car is the low beams. lenses yellowed, like the shocks,very expensive to replace
love the car
V8 is great... has great gas milage.

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