1998 Cadillac Seville STS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 Cadillac Seville STS
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1998 Cadillac Seville STS ProblemsCar Won't Start Because of Anti-Theft System That Uses Raised-Chip Key
Problems with anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The key and ignition lock cylinder should be replaced to correct this condition.
The high-pressure power steering lines are known to leak.
Vehicles equipped with the 4.6L engine may develop excessive oil consumption. Please be advised that under optimum driving conditions, using one quart of oil every 2000 miles is acceptable. This Cadillac standard applies to vehicles with less that 50,000 miles. Our technicians tell us that if you experience excessive oil consumption it may be caused by built up on the piston rings which restricts movement, preventing them from wiping all the oil from the cylinder walls. Oil left behind is then burned during the combustion process. There is a special ring cleaning procedure which can help this situation. The GM service bulletin number is #02-06-01-009C.
1998 Cadillac Seville STS QuestionsWipers work only on high speed ,low speed. Intermittent and washer do not work (2 answers)
came and went at first now permanent. Wipers also stop in up position when turned off