Heater Airbound?
Heater control cable not working?
Heater core plugged?
could be a bad thermostat try replacing it answer try flushing out your heater core also
Before CHanging the Heater Core, have you tried flushing it? I have a 99' Jimmy and have to do this every year to get my heater to work.
how to replace a heater core in a 1997 Chevy blazer
how do i replace a heater core in a 2001 Chevrolet blazer
I am having the same problem.. I have already had to replace the intake manifold gasket cause it was leaking, still no heat. We will be flushing out the heater core to see if that's the problem. I may have to replace the heater core, we will see.
Try flushing heater core Try flushing heater core
go to website coloradok5.com and look in their tech section. they have very detailed instructions on changing a heater core in a Blazer....should be exactly like your suburban. its kind of a pain but worth the money you'll save over paying someone else to do it.
The shop manual requires the removal of the dash assembly. If you consider yourself mechaniclly inclined go for it but it's not for the faint at heart. If it's plugged up and not leaking have you tried flushing it?
were is the heater relay on1996 jimmy?
Same as a 96 blazer go here.How_do_you_replace_the_blower_motor_on_a_1996_Chevy_blazer
The heater door control on a Blazer can be replaced by purchasing a new one. The heater vent will pop out with a little nudge from a flat tipped screw driver. Then insert the new heater vent door control.
The thermostat might need to be replaced. or the coolant level mite be low. it is a sign that it is. and also the type of coolant used if not flushed and replaced tends to clog the heater core. try flushing it out. lastly you have a bad intake gasket and leaking coolant out. 4.3's are notorious for this.