1998 Cadillac DeVille Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 Cadillac DeVille
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1998 Cadillac DeVille ProblemsImproper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator
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 rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.
An intake manifold vacuum leak can develop from a variety of sources, often causing illumination of the Check Engine Light with codes P0171 & P0174 stored. Thorough diagnoses will be necessary to pinpoint the cause in order to make the correct repairs. A "smoke" machine is often used to isolate the cause of difficult to find vacuum leaks.
1998 Cadillac DeVille QuestionsKey will turn over bit doesn't start (1 answer)
Bought a new battery,and alternator and now the system anti theft light comes on but not sure if that is even the issue..it makes a clicking sound when I turn the key but does not start
This is a limo version
The interior lights won't turn off and the dash board light are out ( speedo and all others ) . It looks like it has small oil leak ( not sure from where )
1998 Cadillac DeVille RecallsCadillac Recalls 1998-1999 DeVilles Due to Unintended Deployment of Side Impact Air Bag
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.