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Heat and Air

Tiny
TRSJR1
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
1999 Chevrolet Blazer heat and air conditioner work but don't know how to set program. Only blowing heat right now. This is what is on the receipt. "A/c service, set program to cold (6-03-10)". (11-5-10) went back and on receipt "set to heat". He said, he was not sure how far to turn "it". He did have a long screwdriver in his hand (about 2 feet long). Can you tell me what he turned so I can fix it myself. Thank you for your time.
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Friday, April 29th, 2011 AT 8:08 PM

3 Replies

Tiny
TRSJR1
  • MEMBER
  • 6 POSTS
Picture of receipt.
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Friday, April 29th, 2011 AT 8:11 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The programmer is an automatic temp control unit. It apparently is not working and he is manually pushing the temperature control around. You may have a bad blend door actuator. It needs to be diagnosed properly.
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Friday, April 29th, 2011 AT 8:31 PM
Tiny
TRSJR1
  • MEMBER
  • 6 POSTS
Thank you! Will have it look at by someone else to finally get the problem fix.
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Friday, April 29th, 2011 AT 8:35 PM

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