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1999 Chevrolet Silverado high side schrader valve

GnatGoSplat on Tue June 19, 2012 12:15 PM User is offline

Year: 1999
Make: Chevrolet
Model: Silverado 1500
Engine Size: 4.8L
Refrigerant Type: R-134a
Country of Origin: United States

The high-side valve on the Chevy Silverado is leaking significantly. I noticed it does not have a normal looking schrader style valve core in it. Instead, it had what looked like a little black rubber ball in there. I was able to pop out that rubber piece with a small screwdriver, and it's not a ball, but a rubber cap of some kind shaped like half of a ball. It was covering the valve which has the appearance of a piece of flat black plastic.
Parts catalog says the replacement valve core is p/n 03041827 and same as the low side. All the images I've found online show it to look like a standard schrader-style valve core. Is this really the correct replacement part, or is there an error in the parts catalog?

TRB on Tue June 19, 2012 1:20 PM User is offlineView users profile

Might be what we call a primary valve.


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