Most likely the rear expansion tube or valve is defective.
Your front blower motor has gone out. There is a front and a rear blower motor.
Possible blockage in the rear air units expansion valve. I just replaced mine for the same reason.
i own a 2001 Chevy venture warner bro. edition. and the rear air blows hot while the air is on up front.. i had it checked out and the rear has no ac its just a fan for the back..go figure. my customized Chevy express full size van does the same thing
Hot air because it is blow out the hot air from the inside of the laptop.
There are separate expansion valves in the rear, so even if the front system is failing, the rear unit could still work normally.
A/C compressor not running
You probably have a low refrigerant level.
Your coolant level is low.
The chemical in the air conditioning unit needs replaced.
Check coolant level, and radiator fan operation.
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