ID this plug?

[andy396]

Pretty sure this is the one you need.

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[Stumpy]

Thanks @andy396 !

 

[east302]

About the 5:00 mark, the guy swaps the switch out. Not much to it.

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[Bigred81]

That’s funny. Doing mine today. Have a short or something. 103 yesterday. Need some cool air.

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[Bigred81]

Sorry to hijack this thread. But since I’m replacing mine I do have a question today while people are on here that know what they’re talking about that part. I do need to have my AC evacuated before I replace this correct?

 

[PlayingWithTBI]

Definitely - it's under pressure. Even the new pump, if you're changing it) will be under pressure.

 

[Jpw64]

That is a high pressure switch for Max a/c and a higher blower speed.

 

[PlayingWithTBI]

That is a high pressure switch for Max a/c and a higher blower speed.

A 1-wire switch was for that in earlier years trucks that didn't have the "Max A/C" button on the control panel. Later models used the 2-wire switches for high pressure cut off and were wired in series with the low pressure (cycling) switch. Here's a schematic from a 98 C/K Service Manual (Vol 1) where it shows them.

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[Stumpy]

Got a brand switch installed into the back of the compressor, and plugged in the plug that started this thread. Compressor still doesn't run, but will if I jump the plug. What could be the issue now? This is annoying. Just glad this is not my daily driver, too freaking hot for this crap.

 

[PlayingWithTBI]

Sounds like you got the wrong plug. Here's the one I used - 430psi off, 200psi on

https://www.oreillyauto.com/detail/.../c1500-pickup-rwd?q=a/c+pressure+switch&pos=0