check heater fan to see if it is working.
I've got a better question, why is this question in the Chevy venture forum ?
if this system uses dex-cool flush the system
No.
Theres a short in the circuit board that controls the Fan go to a Chevy dealer and have them replace it
in the Chevy Malibu forum
where is the air bag fuse on a '04 Chevy Malibu
It has 10 air bags.
Yes it does.
the system is probably out of coolant.
The air of your Chevy trailblazer 2004 blow out of the front vents when the air conditioner is on because the air condition is faulty and it needs repair.
it wont blow heat itll blow cold air
Did you replace the fuel filter? If not do so. There may be air in the lines. Use starter fluid to get it started.