AC Not Cold Due to Refrigerant Leak on GMC Safari

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 159,760 (50,000–249,000)
16 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
32 people reported this problem
Viewing 1 - 7 of 7 comments
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.
Rear air switch will not turn on A/C in back
ac lines broke rubbing on transmission
had it welded
Likely bad seal, worn or corroded line. AC not working. Rear AC in this unit.
Rear evaporator coil not draining properly.
Does anyone have the best way to clean bottom of pan without taking evaporator out?
Replaced compressor twice, leaks Freon front and rear a/c systems.