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Why would a 2001 Chevy Blazer heater only blow cold air?
Low coolant in the system. Defective heater control valve. Clogged heater core.
Why does your 1999 blazer's heater only blow hot air at higher rpm's?
The thermostat could be stuck open.
How do you remove the cover from the heater coils on a 96 S10 Blazer?
The only access to the heater core on a 96 S10 blazer is by removing the entire dash asm. It is not accessible from the engine compartment. If you are not familiar with disabling the the air bag system, do not attempt this repair.
Why would hot air come out of the defroster and vent work but not the heater on 95 S10 blazer?
What causes heat to only come out of the defrost and vent but not the floor of a 1995 S10 Blazer?
Heater only works on high speed?
The heater motor speed resister is burned out.
Why is only cold air coming out when heater is on in a 2000 blazer?
Could be, Stuck open thermostat, Low on coolant, Plugged heater core, Temperature blend door actuator malfunction.
Why would a 1997 s10 Blazer heater only work on occasion?
It can be that your coolant level is low, your thermostat is stuck, the actuators are sticking...
97 f250 heater only works on high is this a problem with the heater resisitor block?
Possibly
Why would the heater in a 2002 Grand Prix only work on high?
Defective heater resistor pack.
1999 ranger heater fan only runs on high setting how can you diagnose problem?
heater resister is bad
Heater motor only works on high 2002 dodge caravan 95000miles?
Replace heater motor resistor.
Heater only works on high?
The blower motor speed resistor is burned out.
