Rear ac help
 

Have a 2001 3500 van with a cutaway box on back. Has a rear box ac. Works OK but not cOld enough. How or where would I get it rechargedone meaning one of those cans from the store. Trying to find more info on the manufacturer and where the parts are in the van. Might it run off the same.ac compressor as the cab ac? That is super cold. Thanks

one compressor for front and rear. the rear system have 2 a/c lines that branch off of the front system. the lines go to the rear hvac case with houses both the evaporator and heater core. the thermal expansion valve, located in the rear hvac case, meters high pressure refrigerant into the rear evaporator

could be a number of issues
-faulty temp blend door
-rear evaporator air flow blocked
-rear hvac thv valve faulty
-low refrigerant level