Question about 2003 Chevrolet Trailblazer Ext

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Ac repair AC was working intermittently (cold air when first started, then warm air). Cold Air when outsie temp in the high 60's. As soon as it is hot outside, no AC. Tried adding freon. Actually, may have added too much, as pressure gauge is in the red. Dealer ship states line to the rear compressor is leaking. Where is rear compressor and how can I replace leaking line? Thanks

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  • yadayada
    yadayada May 11, 2010

    have no idea which line there are many, some high pressure some low, the ac compressor is driven of the engine, to vague on info to help u, need specific part ID to tell u how to replace it. don't run the AC overhcharged, the compressor will seize up and u will be looking at over $1000 to repair it.

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Your Trail Blazer does not have a rear compressor. It will have a rear expansion valve and a rear evaporator core. Changing the line will depend on exactly where it is leaking. The lines run all the way from the front to the rear so it can be a chore. Do you know which line it is and about where it is leaking? There are a high and low side line, and they will have connections in places. With more info on the location I can look it up on the GM service site and give you more info. Good Luck

Posted on May 30, 2009

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