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1998 Chevy Suburban Front A/C not cooling

Tiny
CADDIAC
  • MEMBER
  • 1998 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Front A/C out put does not blow cool air, rear a/c cools fine. Refridgerant was a little low but topping it off made no difference. There is only one compressor. What else could cause this problem?
Monday, February 11th, 2008 AT 8:31 PM

7 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Blend door problem under the dash. Might not be moving the door all the way over to cool.
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Monday, February 18th, 2008 AT 6:30 PM
Tiny
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Is there a way to check the door's operation. Since I do not have slide leavers I assume the doors operation is pneumatic or electric.
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Monday, February 18th, 2008 AT 8:21 PM
Tiny
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There is an electric servo for the blend door. Remove the glove box and you should be looking right at it. Watch the center of it to see if it moves when temp select goes from hot to cold
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Tuesday, February 19th, 2008 AT 6:40 AM
Tiny
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  • 9 POSTS
I pulled the glove box but do not see the servo motor. I can hear it but cannot see it. Could it be inside? I where the wire plugs into the housing just not the servo.
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Monday, February 25th, 2008 AT 5:05 PM
Tiny
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Pretty sure it is on top, if you use a mirror, you should be able to seeit
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Monday, February 25th, 2008 AT 5:36 PM
Tiny
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  • 9 POSTS
From inside the glove box, there is nothing I can see. On top, there is a wire connector in, there is what appears to be a switch to the left of the connector. The front is unremarkable, the right side runs clear back to the fire wall. The bottom runs almost that far but, with a flash light you can see there is open space back there. With a mirror I can see that I can't see anything.

Hey at least the windows still work.
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Monday, February 25th, 2008 AT 8:29 PM
Tiny
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Usually the blend actuator is accessable for just this reason.

Try going here
https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

This is for Mitchell online manuals. They are printable, and way better than regular manuals that you can buy. Look in the heating/ac section.
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Tuesday, February 26th, 2008 AT 7:35 AM

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