the blower motor resistor is bad or the connector going to it
The 2004 Chevrolet trailblazer air conditioning fan switch has three settings. The switch can malfunction, and only work in the high setting.
Had one that the fan motor was going bad Was burning out resistors with high draw
blower motor resistor
the blower motor resistor is bad or the connector going to it
That would be caused by the blower resistor.
yes the cooling fan will take 4 minutes to work The cooling fan will come on as soon as the car starts only if the air conditioner or derfroster is on.
The fan control module in the engine compartment has gone bad.
If only high speed is effected check the high speed relay and/or the fan switch/electrical connections for problems.
Bad resistor or a malfunction in the switch.
try replacing the blower motor resistor
You need to replace your Blower relay,
the blower resistor controls the fan speeds