1994 Cadillac Seville SLS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1994 Cadillac Seville SLS

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1994 Cadillac Seville SLS Problems

Stalling Due to Failed Crankshaft Position Sensor

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

Inspect transmission/fluid every 30,000 miles

You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.

Replace spark plugs every 30,000 miles

The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.

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1994 Cadillac Seville SLS Reviews

Among the several electrical problems I have with this car (doors locking and not unlocking, the trunk popping up randomly) I have a new problem with the alarm. My car alarm will go off randomly, if I lock it and try to unlock it, it will not unlock, and when I use the actual door key the alarm goes off. Even when I do not lock the car, I will get out and shut the door, setting the alarm off, w...
The '94 version of transverse NorthStar is an absolute racehorse. It is a thoroughbred. It will flat crawl up and get naked with you! I mean it is STOUT! I'm the original owner of my Seville SLS. 147,000 miles! Only 3 tuneups. I broke the engine mounts twice (I think from hard accelerating) . I think this is a very weak component in the engine compartment. Oil & filter every 3,000 miles The br...
The race-bred Northstar engine is awesome. It will spank a 5.0 Mustang and yet still gets 25 mpg hwy. Comfortable interior and ergonomic controls. The PCM wiring cracks easy and develops shorts/ground problems. Suspension is great...when it works properly. I recommend switching to the passive suspension components. Overall a very good car.

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