1999 Cadillac DeVille Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Cadillac DeVille

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1999 Cadillac DeVille Problems

Improper 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.

Engine Overheating Due to Leaking Headgasket

Overheating of the engine may cause the cylinder head to expand, severely straining the head bolts and damaging the threads in the engine block. This commonly results in a blown head gasket. Our technicians tell us the engine block threads must be repaired before the cylinder head is reinstalled.

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.

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1999 Cadillac DeVille Questions

I have a draw on my batt it pull all power I check with DVOM and the pcm was dra (1 answer)

When I pull the pcm fuse the meter went up real high what's going on

is it possible to rebuild alternator at home. (1 answer)

Engine overheating, (1 answer)

Changed thermostat, 3 fan relays, coolant temp sensor, fans will still not come on. Ran a toggle to turn fans on and it still overheats when in traffic. If im going 50 mph or better temp stays at 199-206 degrees. Also when i first start it, it runs extremely rough for about 30 seconds once i rev ...

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1999 Cadillac DeVille Recalls

Cadillac 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.

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1999 Cadillac DeVille Reviews

I have a 99 cadillac deville that keeps getting hot even after changing the thermostat, water pump, fan relays(because fan wasnt coming on)and still it overheats. Any suggestions?
Need help with my husbands 99' Cadillac De Ville. He put too much weight on the back tires and now they have a "buzz sound" and don't drive straight. Our Haynes Repair Manual doesn't shows what kind of bushing he needs for the rear tire (right side). The Williamson Cadillac in Miami, send "lots of nuts" (will not solve the problem).
i have a 1999 Cadillac De Ville,its been a great care.bought it from auto action.ran good for abt 5 months then it ran hot, these cars have a problem with the head gasket bolts that cause it to leak and run hot.i put liquid copper in it abt 8.00.i know they say dont put stop leak in it but it works.stop the leak stopped it from running hot.and the check engine light went back off,and it runs go...

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