Question about 1997 Chevrolet Astro

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The fan blower that blows cool or warm air through the vents will not work and I am wondering how you remove this part (the cover) to repair this part?

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  • Master
  • 553 Answers

You could just have a blown fuse but the fuse blew for a reason.
There are a few possiblities, I'll try to list them in the most likely order;
1) blower motor speed control resistors.
2) blower control switch
3) blower motor
The blower motor and speed control resistors are usually accessable from under the hood. Once you find the blower motor follow the wire that leaves the motor to where it plugs into the fire wall. This is the speed control resistor assembly. unplug the wires and remove the 2-3 screws that mount it to the fire wall. When you get it out you will find 2-4 wire coils on the back, these are the control resistors. If they are burnt or broken you need to replace them. If they look fine you need to test them with a Ohm meter or continuity tester. If they test good (having continuity) then you need to test the blower motor.
To test the blower motor, you'll need a jumper wire or an amp meter and test leads long enough to reach the battery from the plug in for the resistors. Plug the resistor assembly back into the fan plug. Fasten alligator clips to your jumer wire or use your test leads from the amp meter. Fasten your alligator clip to one end of the resistor assembly then touch the other end to the battery and listen for the blower motor to start. If it doen't start your problem is the blower motor. If it does start then your problem is most likely your fan control switch. Given the complexity of changing the switch and the many differences from vehicle to vehicle I can't tell you how to do that and I recommend you have a professional do it.

Posted on Jun 07, 2010

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  • Chevrolet Master
  • 3,640 Answers

The blower motor is under the hood on the pass side. u have to remove the wiper and radiator bottles and also the head light. than take out the 7 bolts that hold the blower motor in than u have to remove the squirel cage before the motor will come out

Posted on Jun 07, 2010

  • carl Jun 07, 2010

    squirrel sorry for the mis spelling!!

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