new user and thanks for having me
problem is with my 2003 gmc yukon 5.3l v8 not the flex fuel model slt 4x4
air conditioner wiring harness was wrapped under the control arm,i was told this happened on some vehicles from the factory when the engine was installed.anyway this is what happened
the wires to compressor and switches broke ive since repaired the wires and have not been able to get the system running
replaced the hvac modular inside the truck,had a line through the "snowflake"when the original break in the wires must have signaled the problem.replaced with a used one since repair and the "snowflake"is in its normal state,no line through it.
have power to the switch up at firewall condensor pressure switch
do not have power at the compressor plug.replaced the plug due to wear.
do not have any voltage at the plug or switch on the lower line down by the compressor
clutch on compressor rotates by hand,tried jumping the pressure switch that has power and dosent start the system.i figured it wouldnt but had to try.i did have the system charged at a honda shop hoping a vacum and new refrigerent would start the system up.no luck but do have correct freon.the honda shop didnt have any gm computers or much knowledge on the system.had this done there due to friend owing me a favor. does anyone know if i need a reprogram. does anyone have a wiring diagram for my truck.
need help thanks
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Not here for a long time,im here for a good time!
A/C system wiring diagrams
Please take off bold and caps, it makes it difficult to read
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This information is provided only as a reference.
All circuits should be verified with a digital multi-meter prior to making any connections.
Fuses, wiring harness continuity, sensors and pressure switches. Did the vacuum hold by the way?
thank you very much ! i now have a much better view on the subject.
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Not here for a long time,im here for a good time!
howie ll wrote:
Fuses, wiring harness continuity, sensors and pressure switches. Did the vacuum hold by the way?
now i havent looked at the vac where and how ,
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Not here for a long time,im here for a good time!
91stt] wrote:
A href="https://www.the12volt.com/installbay/file.asp?ID=885">A/C system wiring diagrams
Please take off bold and caps, it makes it difficult to read
i thank you very much!
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Not here for a long time,im here for a good time!