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This is not a common failure. The more likely culprit is the blower moter resistor that controls the fan speeds. Very simple to fix yourself and about $35 for the part. To get more info about this or other Trailblazer '02 and up questions join our forum at www.trailvoy.com
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∙ 16y ago
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Where is the relay for the heater fan on a 2002 Chevy Trailblazer?
The 2002 Chevrolet trailblazer heater fan relay switch is located behind the dashboard. The relay switch will be on the drivers side of the vehicle.
How do you replace the heater core in a 2000 Trailblazer?
They did'NT make the Trailblazer in 2000 might you be looking for information for a 2000 Blazer.
How do you replace a dimmer switch on a Chevy Trailblazer?
Im pretty sure after you remove the steering column cover, the switch clips in.
Your heater stays on hot continuously any ideas?
replace the heater temperature switch
How do you replace the heater switch in a 2002 s10 truck?
Pull the front dash bezel out that surrounds the cluster and the radio and the a/c-heater controls out and then remove the controller and replace the switch.............
Where is water on drivers side of 2003 Chevy Trailblazer coming from?
It could be coming from your heater core, may need to repair or replace it.
What would cause heater quit working on 1977 Chevy Camaro?
Check fuse if the blower is not working. If it is then replace your heater core. if its not then replace your fan switch.
How do you replace heater blower corsa D?
The heater switch can be replaced on a Chevrolet Corsica by removing the three wires from the back of the switch. Put the wires onto the new switch and return it to its slot.
Where is the neutral safety switch on a 2003 Chevy Trailblazer?
Where is the neutral safety switch on a 2003 trailblazer?
What is wrong if you replace the heater switch but the heater continues to only blow on the 3rd click and nothing else?
The relay is bad.
How do you replace the heater switch in 2003 Pontiac Grand Prix?
Need a little more info on what your trying to replace. Is it the switch in the dash? It's in the overhead console.
How do you replace a throttle body Chevy Trailblazer?
How do you replace a throttle body on a trailblazer 2002
