Question about 1994 Oldsmobile Eighty Eight

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The heater blower keeps running even when the key is out of the ignition

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When did it start doing this? How soon after does it stop? Does it stop blowing by itself?

1. The vacuum system has a leak and sounds like rushing air. When vacuum reaches atmosphere pressure, the sound will go away.

2. In the 1980's and prior years, Olds keeps the fan running in order to remove moisture in the heat panel. I hated that.... it stops after a few minutes.


Posted on Sep 25, 2009

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You have a defective blower control module located in the blower duct under the engine compartment, they cost $240 I got one for nothing at an auto wrecker.

Posted on Nov 10, 2009

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Posted on Jan 02, 2017

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Why does my heater keep running after I shut my Envoy off?


I have the same problem. I have also been searching the web for a solution. I came across someone saying that it was the heater module located behind the glove department. I can't find now where i read this but it said the part was approx. $150.00. He was having same problem as us, heater wouldn't obey touch commands to turn on/off or when heater did blow it would only blow real low or real high. Like you, after turning off engine blower motor was still running even though it wasn't blowing air out.
I'm tired of paying for things that are not due to normal "wear and tear" on my 2003 Envoy. Let me know if this helps you and how you repaired it. I'll probably have to take mine to the shop but because I'm a "girl" I swear they think I'm crazy with all my Envoy complaints.

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