I've tried every thing to get my heater to work but the thermostat could that also be a reason for no heat?
Yes, the thermostat could be stuck open. Look at your temperature gauge. After about 15 or so minutes of driving it should be one or two notches to the left of center (210°F). If it's considerably lower or doesn't move at all it's a good bet the thermostat is stuck open (overcooling). HTH. -Jim
Search Chevrolet Blazer Questions
Chevrolet Blazer Experts