Cadillac Seville STS Repair and Maintenance

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

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Cadillac Seville STS Problems

Check Engine Light Due to Gas Cap Issue

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

Engine Overheating Due to Leaking Headgasket

Overheating of the engine may cause the cylinder head to expand, severely straining the head bolts and damaging the threads in the engine block. This commonly results in a blown head gasket. Our technicians tell us the engine block threads must be repaired before the cylinder head is reinstalled.

Coolant Leaks From Water Pump and Radiator

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.

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Cadillac Seville STS Questions

Idles fine. Give it gas it backfires misses stumbles (1 answer)

When it backfires misses and stumbles it will overheat. Today it did this but now doesn't want to start. What would be problem

Just replaced radiator still over heats doing hwy speed (2 answers)

1996 Cadillac sts. Just replaced the radiator, and thermostat. When we do hwy speed 100km or more engine says hot. There r no leaks any where., all the belts r working. No clue what could be wrong. Any ideas....?

I plan to replace my Ignition coils and modules, how many will I need to buy? (1 answer)

how many ignition coils do I need to purchase?

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Cadillac Seville STS Reviews

I am an 18 year old kid and bought this as my first car. That being said, I don't expect it to last me that long cause when something goes wrong it is very expensive to fix it.when that day comes I'll have to part it out:(
Purchased in 1999, original owner, I only drive it occasionally and have around 71k miles on it now. Only 1 major issue with the vehicle - a nagging vibration at 65mph caused by either axle or something in the suspension up front. Original tires, and replacement tires as well as rims have been high speed road force balanced twice but vibration continues. Replacing the axle will be next, somet...
Love the smooth engine and the thrill of power, drives great. 142000 miles I do have an oil leak and 3rd light is half out tail lights get condensation in them. Center console cup holder is broken will not stay stored. Car still looks great and still has a great shine.

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