1997 Buick Riviera heats only one side

Tiny
MWK
  • MEMBER
  • 1997 BUICK RIVIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
Cold air on drivers side, hot air on passengers side
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Sunday, December 20th, 2009 AT 8:16 PM

2 Replies

Tiny
HMAC300
  • EXPERT
There is either an electric or vacuum motor that moves a door undre your dash. It is either not working or stuck. Sometimes if you move them by hand that takes care of it. You'll see a rod connected to motor like just see if it moves one way or te other. LOok carefully as you may have a vacuumline disconnected or leaking.
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Friday, January 15th, 2010 AT 8:30 PM
Tiny
MWK
  • MEMBER
Thankyou for your reply. It was a fan door motor under the dash, infact there were three motors lined up all on the drivers side from top to bottom and they were all electric. I went to a auto parts store and they said it would cost about $189.00, and they would have special order it. I then went a G.M. Junk yard and the cost would be $40.00. I ended up at a you-pull-it junk yard, took a fan door motor out of a 98 buick park ave. For $4.00, I don't think they new what they had. Now I had to find out witch motor of the three under my dash was the bad one. I took one motor off at a time and replaced it with the new motor and worked the heater buttons untill I got heat on the drivers side and found the bad motor. The bad fan motor was the middle one and I now have heat on both sides of the car. Thanks again
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Saturday, January 30th, 2010 AT 2:18 AM

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