bush auto place has this part! 937 382 2252 ask for kathy cook. she is the parts manager. she will look this up for you.
James drives Chevy Blazer, Dodge Ram, '55 Chevy BelAir i don't know about others.
Remove you glove box. It should be behind it.
The problem is most likely a broken blend door. This problem is very common on this model and that's always a pretty good guess. There is an aftermarket fix for the problem or have the dealer diagnose and fix it for close to $1k.
Its called an "Intake Manifold Tuning Valve". Its function is to join or separate the two sides of the intake manifold. It has a minor effect on engine performance. It can be difficult or impossible to remove.
pull the door panels and see if the rivets holding the actuators in place have been sheared. they are very thin and don't hold up to the rigorous movement of the actuator. I have had mine worked on five times, (front and back) while under warranty and once more, (done right) myself since. I was actually told that it was the actuator that was the problem but when I tore into it myself the actuator was fine. I screwed a pilot hole into the center of the rivet, then secured them with a self tapping screw. it cost me 6 cents for the screws and about 45 minutes. If your actuators are bad they are about $28 a piece.. under warranty they were charging the warr. company $600
The heater blend door is not run by vacuum. It is run by an electric actuator.
The 4x4 actuator is screewed into the front differential housing towards the passanger side, It has electric wires going to it,
the temperature control actuator is on top of the heater box under the dash. you have to remove the dash to get at it. a repair manuual will show what screws to remove
Remove the dash assembly to gain access to the blend door actuator.
how to replace a heater core in a 1997 Chevy blazer
on the front axel
Under your battery tray
The 1997 Chevrolet blazer actuator switch is located on the firewall in the engine compartment. The switch is on the passenger side of the engine compartment.
It could be the actuator that diverts the air through the heater core. Our enthusiasts forum may be able to help you more at www.trailvoy.com
Changing the heater temp blend door actuator requires removal of the dash assembly. Big Job. You will need a shop manual to attempt that one.
Yes it could and so could a stuck open thermostat or a plugged heater core or a faulty temperature blend door actuator.
No, it is electric