1991 Cadillac DeVille Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Cadillac DeVille

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 anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.

The electronic level ride system may not work properly; this may result in the rear of the vehicle riding too high or too low. Our technicians tell us that a height sensor or exhaust valve failure are common issues with this system. Proper diagnoses will be necessary to confirm the exact fault.

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Most of the time when the cars on the dash lights will start to flicker on and off and due to the the heater and ac will flicker on and off I would like to find out why and fix it cause it's not to fun driving when it's -2 out and the ac kicks on. Would you please help me find what's ...

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Cadillac has recalled 1991-1993 Cadillac DeVille and Fleetwood vehicles because the upper transaxle cooler line may leak. In the presence of an ignition source, a fuel leak in the engine compartment may result in a fire. Dealers will replace the upper transaxle cooler line.

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my car keeps turinnig off after like 3 20 min drives an will stay off for 40 min then turn on without a jump ..... help .... my ac blower wont turn off when car is off .... an the far for radiator keeps blowing an its getting hot alot now i replaced both lower an upwer hoes an keep flids inb there an oil good full synthetic help other then that its a strong car 123k miles 2nd tranny first engin...

Bought this car 4 years ago for commuting and its the best commuter car I've ever had. I travel 160 miles a day with it to and from work, gets in low 20's for mpg at around 70mph. Headliner needs replacing, typical GM issue and I've replaced a couple sensors and a muffler, not bad for a car nearing 200,000 miles

Have a '91 Sedan DeVille that I bought in 2009 from orig owner. Had 74K on it. Wanted a comfortable car for long trips. Beautiful pearl white w/ navy leather. Was kept covered in a garage... No dents, chips, scratches----looks like new. Replaced the a/c compressor---bearings wore out, replaced the brake master cyl & booster, did a tune-up---still had orig wires & plugs on it. Love the ride, lo...

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