1994 suburban rear A/C

Jul 03, 2003 3 Replies
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Just had the truck in the shop since the compressor blew out. compressor was replaced, but, a/c to rear runs hot and front was not consistent. told me there was some type of mechanical vent that was stuck in rear and would be fixed.



took it back to the shop and they said they did not flush the lines and were going to remove the compressor, flush the lines and install a new compressor and recharge.



Now they tell me my rear air has some type of problem and needs an additional $395 to "fix"



My understanding is the rear air is simply vents coming from the front. what could cause the rear to run hot?



thanks for your help



joe


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S

Joe,

I don't think the rear is simply vents - the rear has its own condensor or something like that. Dean Darwin posted a message a really long time ago about some problems with Suburban A/C. His advice was to always run the rear fan on Med-High when the air was on to prevent whatever is back there from having troubles.

Since I read that, I have always had my wife do so (on the rare occasion that she even runs the a/c). We've not experienced problems, so far. Ours is a '94 K1500.

That fan is blowing across something because there are no vents that run the length of the truck.

Snowman

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"^Halibut^" sez:

No, your "rear air" includes a heat exchanger and blower fan system independent of the front. When the compressor munched itself, it likely send debris downstream that could have plugged orifices and the like in the rear system.

When my compressor ate its young, the shop quoted me a rate for replacement that included a full purge of the system for the aforementioned reasons.

VLJ

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B

That would be an evaporator for that kind of money. I'm betting the orifice tube is clogged.

Bush

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