2001 Yukon XL A/C Compressor Pump Replacement

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ontmark

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Ok so I started today to replace the A/C Compressor Pump.
I have the old one out and it has a purple switch on the tail end cap held in with a snap ring.
The new supposable OEM Replacement which is a Delphi has that port with a cover and snap ring holding the cover in.
I would like to install a new switch there before I go in with the new Compressor Pump.
What is the switch called and Do I remove the cover and install the switch or should I look for a compressor pump with that switch already in.

I will post some pictures of old Compressor Pump and new one for reference.

Also new pump stats PAG105 oil. I cannot find any info on that.

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ScottyBoy

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I replaced mine in my 2001 Suburban a few years ago. I bought an AC Delco compressor from Rockauto.com and I believe it already had the switch in the compressor. Everything plugged right up, I didn't have to swap anything over. And as far as the PAG oil, I put about 3 to 3 and a 1/2 ounces in the compressor before I connected the lines. I just poured it in with a funnel.
 

SLCHOE

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It's the low-pressure switch. Just pop the snap ring off and remove the plate. Swap in the old sensor and install the compressor.

On an aside, Did your compressor lock-up? If so that sends metal particles through the system and you should also be replacing the accumulator and orifice tube as well as flushing all of the metal out of the lines, evaporator and condenser. Failure to do so will send that metal right into the new compressor and cause the new one to fail.
 
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