Have a 2001 2500 HD Diesel 5.9 Auto Tranny. I have a major A/C leak. Leaked down with in 4 months. Are there any common problems with the A/C's on this type vehicle? I am the original owner. I had freon put in in 2007 and 2009 and Nov 2010. Is there a likely area to look for the problem? Any help will be greatly appreciated.ThanksMohok

Have a 2001 2500 HD Diesel 5.9 Auto Tranny. I have a major A/C leak. Leaked down with in 4 months. Are there any common problems with the A/C's on this type vehicle? I am the original owner. I had freon put in in 2007 and 2009 and Nov 2010. Is there a likely area to look for the problem? Any help will be greatly appreciated. Thanks Mohok

Man - I hear ya. Unfortuantely can be anywhere. On mine I have had it (in order) High Pressure Line Heater Core Compressor $1000 and still blowing HOT. Now I think I have a small leak (yours is small if it lasts 4 + months) ...... but I can't find it with UV and black light (u can pick up from walmart). http://mopar.mopar1973man.com/cummins/2ndgen24v/hvac/evaporator/evaporator.htm Best of luck.

4 months is a pretty small leak. I'm shooting a can in every 2 months, and the price of a can of 134 has gone up enough to make me want to try to find it. Fortunately I have access to a Matco sniffer and some other pro gear for leak detection...