When did R-134a become standard in the F-body?
Supreme Member
Joined: Aug 2001
Posts: 1,896
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From: Warrington, PA USA
Car: "02 z-28
Engine: LS-1
Transmission: 4L60E
95, I think. All new hoses sold by GMSPO for ANY year are the 134/12 compatible type. Don't know about all aftermarket parts for sure but most replacement parts for A/C systems are both 134/12 safe.
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