1990 Cadillac Seville STS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Cadillac Seville STS

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1990 Cadillac Seville STS Problems

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.

Powertrain Control Module Electrical Ground Fault

This powertrain control module (PCM) may develop a fault with its electrical ground location at the front of the engine block near the starter motor.

ABS Light Due to Control Module Failure

The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.

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