Heat

Asked by Aniyascookies Dec 10, 2018 at 02:48 PM about the 2001 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

My heat blows somewhat hot with the fan on low
but barely warm when I turn the fan up, what could
be the problem?

2 Answers
9,760

Mike answered 6 years ago

Could be a malfunctioning blend door or a plugged heater core. I think the ATC in this vehicle have self diagnostics and you should be able to watch the blend door move. I can tell you how to enter self-diagnostics but it gets complicated after that, most mechanics will run diagnostics on these systems with the help of a troubleshooting manual or print out.

Mark helpful

Your Answer:

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