Sounds like the Blower Resistor:
Disconnect the negative battery cable.
Disconnect the wire connector from the resistor assembly.
Remove the 2 screws attaching the resistor assembly to the blower or evaporator case and remove the resistor.
Installation is the reverse of the removal procedure. Check the blower motor for proper operation in all blower speeds.
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Monday, May 14th, 2007 AT 11:25 AM