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2001 Chevy Tahoe Front works, back don't

Tiny
STONEFEATHER
  • MEMBER
  • 2001 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 131,000 MILES
First, thank you for providing this service. I have a 2001 Tahoe with 131K miles. The front A/C blows as cold as the day I bought it. Recently, the back just blows air and does not cool. Being as how they are on the same compressor and the front still gets ice cold I am at a loss to understand what is the problem.
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Sunday, October 12th, 2008 AT 11:25 PM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
You still have two lines going to the rear high and low
check if the two lines have a difference in temp
if not suspect the orifice valve
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Monday, October 13th, 2008 AT 9:20 PM
Tiny
STONEFEATHER
  • MEMBER
  • 2 POSTS
BMRFIXIT, Thanks for the answer. I failed to mention that the A/C is also making a loud clattering sound under the hood. Sounds kinda like a lifter rod but the noise ceases immedeately after I turn off the A/C.

Read somewhere about an accumilatior valve preventing the cool air from being vented to the rear? Make any sense to you?

Sorry to be a pain but times are tough and I just don't want to pay for a bunch of repairs only to find the problem persisit (my luck)

Thanks again!
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Tuesday, October 14th, 2008 AT 7:22 PM

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