Cadillac DeVille DTS Repair and Maintenance

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

Select your Cadillac DeVille DTS's year to get more detailed information:

Cadillac DeVille DTS Problems

Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Steering Wheel Position Sensor May Fail

The steering wheel position sensor may fail, resulting in the service stability message being displayed.

Coolant Leaks From Water Pump and Radiator

The water pump and/or the plastic side tanks on the radiator may leak causing a loss of coolant. The engine may overheat due to coolant loss. Continued coolant loss after external leaks have been repaired could indicate a blown head gasket.

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Cadillac DeVille DTS Questions

why am I replacing motor mounts front and rear (3 answers)

twice in the last year

over heating radiater (2 answers)

my car won't start I've had to manually install a toggle switch at the relay (1 answer)

All the relays are good and none of the fuses are blown but yet I can start the car with a toggle switch that I installed at the relay

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Cadillac DeVille DTS Reviews

Hi I'm Donald and you can assume that I'm a mechanic. It's one of my greatest pains but best joys! I also own a 2003 Cadillac Deville with the 4.6 northstar Engine. I'm also an auto Mechanic! I just can't think of a better trade to have than one that allows you to test the limits with your northstar. When it breaks it's going to need LOTS of the best deserved attention and I DO GIVE my Devil...
My mom has a 2001 DeVille and she has had ac problems since it hit about 50,000 miles. Other than that it is a very good car ours has 153,000 on it.
I bought my 2004 dts in the fall of 2011 for $9.000, it had 99, 572 miles on it, the interior is in mint cond the exterior is in excellent cond & has been garage kept since. This is may of 2013 & the car now has 104, 378 miles on it, I rarely drive it cause of a disability & my mom drives me everywhere I need to go in her bmw x5. Point I'm trying to make is I run it around the block every 3 day...

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