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a/c diagram layout anybody as 1 ?

Discussion in 'Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)' started by loic, May 2, 2010.

  1. loic

    loic Rockstar

    I have a leak in my a/c, I cant afford to bring it to a mech to get it fix. I would need a diagram of the a/c layout where it shows all the "plumbing" could somebody post it for me ?

    thanks !
  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Year, make, model.
  3. loic

    loic Rockstar

    sry, for sure it would help....

    99 tahoe LT 4x4
  4. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Do you have rear A/C???
  5. loic

    loic Rockstar

    on the ceiling there is the rear a/c .
  6. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Well sadly i dont have any way to talk you thru the rear A/C and that is most likely where your leak is. All chevy SUvs with rear A/C are notorious for failure to the rear. I am thinking there is someone who has that diagram.
  7. loic

    loic Rockstar

    last time I refilled the a/c cuz it was cold enough, then I noticed the rear was nice and cold and the front about 2/3 as cold as the rear. I didn't used the truck for a couple days, both are warm. the freon is gone. I looked inside the engine compartment for leaks ( the refill is a glow in the dark yeloowish color) but didn't see anything. ( I may have missed it, it's possible..)
  8. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    As i said there are lines that run to the rear of the truck, and that is 99% of the time where the leaks come from. They dry rot and or else loose their seal.
  9. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    family has owned four suburbans and rear air and never a leak in the rear lines. there have been lots fo posts on hear about the suburbans and hoes with the rear air and I have never been apart of a conversation that the rear air unit was the fault. Most leaks come from faulty valves or seals in the compressor. I just had mine replaced at 1000 bucks for the parts and labor. Something like this you really dont wanna just guess at it. The cheapiest way to diagnose is get the freon that has the dye in it and get the special flashlight for it, if there is a leak it will be seen with that pen. but my guess would be the compressor is shot.
    Last edited: May 2, 2010
  10. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    See im not arguing with you here i have had to replace the AC lines on my buddies 2000 Suburban and then the lines on a 1999 Tahoe.. I am not saying that it is the lines... Just from my experience and from what i had read.. I am not saying to replace them. Charging it with the UV dye would be the best place to start. Thanks for adding the extras that i was obviously missing vncj96..
    And if you dont mind me asking why didnt you just replace the compressor yourself and have a shop put a vacume on it??? NO offiense i just dont like to pay a shop unless i absolutely have to.

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