1998 Cadillac DeVille Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 Cadillac DeVille
1998 Cadillac DeVille Problems
One or more of the power window regulators (one in each door) may fail causing the window to fall into the door and not roll up.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
The engine may develop oil leaks from the lower crankcase portion of the engine block. Our technicians tell us that the engine must be removed from the vehicle to properly repair this oil leak.
1998 Cadillac DeVille Questions
I have a 98 Cadillac Deville with a Northstar motor. It has been running hot. I changed the thermostat, and water pump but it is still running hot. My check engine light is on and these are the codes diagnostic tool read. I am just curious, what parts do I need to buy or what do I do to fix it?
1998 Cadillac DeVille Recalls
Cadillac has recalled 1998-1999 DeVille vehicles because the side impact air bag sensors may be faulty. This could result in unintended deployment of the side impact air bags, which may injure passengers. Dealers will replace both side impact sensing modules.
Cadillac has recalled 1998 DeVille vehicles because the hinge pivot bolts may not have been heat treated properly and may fail. In the event of an accident, the hood may push back through the windshield glass, which may injure the occupants. Dealers will replace the hood hinge pivot bolts.
Cadillac has recalled 1998 Devillle and Eldorado vehicles because the purge evaporate emissions wiring harness was improperly routed. This could interfere with the speed control and throttle linkage, and may cause the throttle to stay open. Dealers will inspect the harness for proper routing and then install a tie strap to the harness.
1998 Cadillac DeVille Reviews
My 1998 Northstar (Sedan DeVille) gets 31MPG on the highway. I learned after I had the engine replaced, that it has been well established that the early Northstars were prone to develop warped heads and then the coolant leaks, the engine overheats, etc., and eventually the engine just fails. There is a Fix for this, (maybe $100 in parts, plus labor), which GM rigorously avoided until the later...
This is the car that you want if you take long trips, or if you like driving in the city at low speeds. This is by no means a sports car and should be driven by people who aren't erratic drivers. Extreme comfort in this car. The buttons and controls are all easy to deal with. It has some known issues that are basically universal to this engine...it is not terribly easy to work on because ...
I just bought my 1998 Cadillac Deville July 4, 2011. It was running great for a day and the check engine came on. Well, it over heated so I had it fixed and they said it was ok. The next day bright and early the check engine came on again and the mechanic is saying transmission issues which to fix is more than the car is worth! I regret buying this car so bad!! I should've known Cadi's were pie...