2012 gmc yukon xl denali hvac issues

[Shorty1693]

New sensors new accumulator new orfice tube…. The system was evacuated and filled properly it blows ice cold when the compressor relay is jumped but will not engage with the compressor any other time… I’ve checked the wires for power at the sensors and it’s there… the only other thing I can think of is the climate control panel on the dash isn’t sending a signal to engage compressor???? Any help is appreciated

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I cannot personally help you with your question; however, other members on this Forum that are much more knowledgeable than me in this area will chime in.

 

[Doubeleive]

New sensors new accumulator new orfice tube…. The system was evacuated and filled properly it blows ice cold when the compressor relay is jumped but will not engage with the compressor any other time… I’ve checked the wires for power at the sensors and it’s there… the only other thing I can think of is the climate control panel on the dash isn’t sending a signal to engage compressor???? Any help is appreciated

you need a tech2 or comparable high end tool to see what is going on, otherwise it's a guesssing game
sounds like you have just been throwing money and parts at it.
a tool will let you see what the system is doing versus what is being requested and allow you to properly troubleshoot.

 

[Tahoe14]

I believe there is a list of members in different areas of the country with the tech 2 or similar. You could check and see if anyone is close that could help you out.

 

[Fless]

Tech 2 Owners Map

There are quite a few members that have a Tech 2 and there are always people who wish they had one to use so I thought I would post this thread to try and help each other out. If you own a Tech 2 and would be willing to help out another forum member that might be local to you then post up your...

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