The AC may stop working due to a refrigerant leak from the condenser. GM has developed and updated condenser and mounting bracket to help prevent the replacement condenser from failing in the same manner.Google+
Car Problem Reports
Chevrolet Venture AC Condenser May Develop Refrigerant Leaks
Chevrolet Venture Problem
Average Mileage: 87,750 mi (45,000 mi - 159,000 mi)
Visitor, 2002 Chevrolet Venture, 78,000 mi
ac condenser/had it replaced and now @100,000 it happened again.
Visitor, 2000 Chevrolet Venture, 80,000 mi
AC stopped working. They replaced the refrigerant and it ran right out before finding the problem.
Visitor, 2002 Chevrolet Venture, 45,000 mi
Noticed bright green dye on floor of garage. Turned out to be a condensor leak. Car was just out of warranty, so this cost me about $900 at the stealership to have repaired.
Bad condensor, Had to pay for Repairs, out of warranty, $1,200
Visitor, 2002 Chevrolet Venture
Leak occurred in 2006 at 55K miles. Had to have the condenser replaced which costed me ~$800.