AC Not Cold Due to Refrigerant Leak on GMC Safari

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.

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Average mileage: 149,431 (50,000–249,000)
16 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
27 people reported this problem
5 people shared problem details
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.
2002 GMC Safari249,000
Rear air switch will not turn on A/C in back
ac lines broke rubbing on transmission
Replaced compressor twice, leaks Freon front and rear a/c systems.
1997 GMC Safari150,000
had it welded
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