1993 Cadillac Seville STS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1993 Cadillac Seville STS

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1993 Cadillac Seville STS Problems

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.

Trunk Lid Won't Close Due to Trunk Pull Down Switch Failure

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.

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1993 Cadillac Seville STS Questions

horn will not work checked horns with power and they are good but will not beep (1 answer)

checked horns with power and they are good but will not beep from stearing wheel what to do now

when driving 40 m.p.h. the tach is @ 3,500, is this normal? (1 answer)

Tach red-lines @ 6,500+, what is the deal with these Northstar engines? Are they reliable?

Where is the mode door actuator located? Under the dash panel? And can i repair (1 answer)

No code came up. I just dont have any airflow coming out of vents.

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1993 Cadillac Seville STS Reviews

when I brake pedal and the car is hard not to
overheating issues
I love the way my car drives, smooth and comfortable and everything inside works. Only problem is the pretty fake wood trim around the gear shifter is breaking away. If I keep my speed below 65 I get between 25-35 mpg with cruise on, of course, depends on the road grade too. It is costly to maintain the way it needs.

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