1999 Cadillac Seville SLS Repair and Maintenance

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

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

The engine may develop an oil leak from the lower crankcase portion of the engine block. Our technicians tell us that the engine must be removed from the vehicle to properly repair this oil leak.

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

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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.

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

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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V8 is great... has great gas milage.

love the car

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

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