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Resources for the Repair and Maintenance of your 1999 Cadillac Seville SLS

1999 Cadillac Seville SLS

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1999 Cadillac Seville SLS Problems

Heating & Air Conditioning -- Verified

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.

Engine -- Verified

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.

Engine -- Verified

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

Engine -- Verified

The water pump and/or the plastic side tanks on the radiator may leak causing a loss of coolant. The engine may overheat due to coolant loss. Continued coolant loss after external leaks have been repaired could indicate a blown head gasket.

Miscellaneous -- Verified

The trunk pull down switch may fail causing the trunk lid not to close completely. Our technicians tell us that the failed switch can be replaced without changing the complete pull down motor assembly.

1999 Cadillac Seville SLS Questions and Answers

BobandLibby, 1999 Cadillac Seville SLS, Enfield, NH

After we charged the dead battery (yes, wife's fault), car starts, drives and things like cruise control, AC, etc work but nothing is illuminated on instrument panel and no gauges work to tell...

buck264, 1999 Cadillac Seville SLS, Boerne, TX

I recently purchased this vehicle from an auction. I took it home and replaced the spark plugs on it. Before replacing the plugs it ran a little rough. It smoothed out afterward. Then I started hav...

buck264, 1999 Cadillac Seville SLS, Boerne, TX

How hard is it to change the transmission mounts?

chiguy7, 1999 Cadillac Seville SLS, Chicago, IL

My 1999 Caddy SLS (88,000 mi) needs head gasket replacement. I am considering replacing engine to avoid other future potential problems. What would be a ballpark price I should expect to spend for ...

Melva, 1999 Cadillac Seville SLS, San Antonio, TX

Air conditioning for driver side gives cool air; passenger side air vents only giving out warm air

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1999 Cadillac Seville SLS Reviews

V8 is great... has great gas milage.

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