My heat is not blowing hot enough in my 1991 cadillac deville what should I do first

Asked by Feb 19, 2013 at 03:03 PM about the 1991 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

I dont know how to work heat in cadillac deville 1991

2 Answers

255

It can be your engine thermostat that is stuck fully open. Check your coolant level first, if it's not at the full mark, add some and test your heating system again.

1 of 1 people found this helpful.
215

Change the thermostat and check the fluid. It will always serve you better to get a GM part when replacing a part.

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