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.
Is it blowing cold air only or not blowing any air at all.
my Chevy blazer power seat on my 1996 Chevy blazer isn't working
It may have a bad heater core.
You have a short in the wiring or at one of the bulb assemblies.
There seems to be a short to ground in the wiring somewhere.
It being an American vehicle
NO.. It will not.
check ground first
The fuel pump is shorting out and that is why the ecm fuse is blowing .Disconnect the the fuel pump and try it again,if the fuse blow's again then it is not the fuel pump.
The Blazer was discontinued from production after the 2005 model year, and was replaced by the TrailBlazer. That being said, you have a short to ground somewhere in the circuit.
alternater is shot
Beause there is probably a short/bad connection in the switch, or the blower motor itself