1999 Cadillac DeVille Q&A

1999 Cadillac DeVille Question: My heat turns on while the car is off and drains my battery! How can I fix it?

The problem is constant. I need this fixed. I have no clue what causes this and I need help. Please tell me if you have the same problem and what caused it! Help is appreciated! -
Answer 1
Are you referring to the blower is running. -