my van is over heating when i turn on the air condition. what might be wrong?

my van is over heating when i turn on the air condition. what might be wrong? 1 Answer

i just brought 2004 montanta, no heat in the rear ,it blow cold air when i put on the switch on the dash ...p.s is their another switch i need to put on 3 Answers

i just brought a2004 montanta and their is no heat in the rear,only cold air come out whene i put on the rear switch on the dash...... Is their a other switch i need to put on!!!!!!

Over heating 2 Answers

I've done everything, from changing head gasket timing belt gasket bled system and it still overheating, but when I turn my heater on it go's down.

what is a heating assembly? 3 Answers

I have 2000 Pontiac Montana, had head gaskets replaced at 80K, had AC condenser and compressor replaced at 155K, had transmission replaced 165K, had no heat last year til heater core was flushed, but ...

Coolant fan dont come on van over heats 1 Answer

My coolant fan only comes on when i turn on a/c. Why and how do i fix it?