On vans with rear AC, the AC may stop blowing cold air due to a damaged AC line near the back of the engine. It is common for these lines to rub on the engine block, causing a hole in the line and a refrigerant leak.Google+
Car Problem Reports
GMC Safari Rear AC On Vans May Stop Working
GMC Safari Problem
Average Mileage: 136,985 mi (50,000 mi - 162,000 mi)
I am unable to get cool air from the back cooling unit. I bought this van Dec. 2014. I have started my parts replacement program 5 weeks ago.
Visitor, 2005 GMC Safari
ac lines broke rubbing on transmission
Visitor, 1999 GMC Safari
Replaced compressor twice, leaks Freon front and rear a/c systems.
Visitor, 1997 GMC Safari, 150,000 mi
had it welded