Here are some known problems #1.. The liquid lines at the reciever drier seize onto to the reciever drier. Replacement of the liquid line from the reciever drier to the tx valve. Or the replacement of the condensor or both. Approx. $190 - $500 gassed #2.. Discharge hose leaking. Hose from the compressor to the condensor. Approx $200 gassed #3.. Tx valve leaking. Small valve that regulates the gas flow. Approx. $200 #4.. Evaporator leaking. Behind the dash. (Dash out 10 hours) Approx $850 #5.. Condensor leaks. Normally top left hand side. Approx $500 #6.. Liquid line leaking at P' Clamp on condensor. Approx $190 #7.. Compressor leaking or self distructing. Approx $1200 #8.. Leaking Heater tap. Causes loss of cooling. Approx $60 #9.. Heater tap staying on. Vacuum switch problem. Approx $50 #10.. leaking on floor. Drain tube blocked. Approx. $20 for deblocking These are the most common problems I get with the A/c system on VR-S Commodores. Don't be too scared of the problems, just be aware of them and that The A/c does NOT just need "re-gassing" it WILL have a problem. Regards Guy.