2002 GMC Sierra Service ports

2002 GMC SIERRA
70,000 MILES • V8 • 2WD • AUTOMATIC
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LRDOTY406
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I cannot locate the high pressure service port on my 2002 Sierra p.u. I want to put on the guages to check pressures. Please tell me where it is located. Thank you.
Jun 24, 2010 at 10:10 AM
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FACTORYJACK
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I would have thought it would be easier than it is, I can't find an illustration that shows it. I am even looking in GM service info. Where is the low side?, I would guess on or near the accumulator. What I would recommend is you trace the discharge line from the compressor, to the condenser, and from the condenser to the evaporator. It should be within that area.
Jun 24, 2010 at 11:23 PM