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.
Resources for the Repair and Maintenance of your 1991 Cadillac DeVille
1991 Cadillac DeVille
1991 Cadillac DeVille Problems
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 trunk pull down switch may fail causing the trunk lid not to close completely. Our technicians tell us that the failed switch can be replaced without changing the complete pull down motor assembly.
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.
Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.
1991 Cadillac DeVille Recalls (Recent)
RepairPal Expert Overview:
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.
1991 Cadillac DeVille Questions and Answers
Sometimes when I push on my brake pedal, the brakes work fine and now sometimes the pedal will go to the floor and I have to take my foot off of it and quickly push the pedal again to get the brake...
My Cadillac stalls at stop signs when brake is applied, What would be the cause?
I almost ran out of gas and I think there is air in my fuel system...low mileage, car stalls alot. And where is the fuel pump?
when the car stalls the dash dont work and the sevice engine light comes on when the speedometer works the car runs fine i have relocated all the grounds & put new plugs wires coil & cap
1991 Cadillac DeVille Reviews
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 engine
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, love the classic look, love the power. Had to take it out of the garage last year in the snow when my truck wouldn't start---the caddy was like a tank in the snow.... It didn't have the rear fender shirts---I'm looking for a set to install. Great car---love it!
i HAVE THIS CAR AND i WANT TO SELL IT. ID RATHER HAVE THE FLEETWOOD.
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
I Love My 91 Cadillac Deville Touring Best Car I Ever Had