My 2005 malibu has no heat. When you turn the heat knob from ccw to cw, nothing happens?
SOURCE: 2005 malibu - heat/ac has 4 levels for fsn, level
Your blower speed resistor has gone bad and needs to be replaced. You can pick one up at Auto Zone or Parts Source with the step by step instructions to getting the resistor replaced with common tools.
It is located under the glove box, way in the back of the passenger
foot area. You'll need to remove 2 screws with a 7mm socket, and remove
the plastic cover that covers the blower motor and another component
box that I think controls the passenger airbag. After removing the
plastic cover you'll need to side that passenger airbag module to the
right so it pop off its mounting bracket and move it out of the way.
That will give a better view of the blower motor. I highly recommend you
also remove the blower motor itself because the Blower Motor Resistor
is located behind it. I think you'll need a 5mm or 5.5mm socket to
remove the 3 screws that hold in place the blower motor and 2 more
screws for the Blower Motor Resistor... It's a cramped location to work
in but if you have all the tools and enough lighting then it shouldn't
take more than 30-60 minutes to do. The Blower Motor Resistor costs
about $19-$25. Good luck
SOURCE: my 2005 malibu variable heater/cooling knob will
your connector probably came loose from the back side of the heater control module. try taking it out and checking the linkage.
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