How to Replace the Climate Control Blower Motor on a 2003 Chevy Tahoe

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The climate control blower motor on a 2003 Chevrolet Tahoe is the fan on the inside of the climate control system which adjusts its speed based on the settings you adjust on the climate controls. This fan can get out of alignment and start to make an annoying noise, or can go out completely, leaving you without heating or cooling. Replacing this motor requires some difficult under-dash contortions, but it can be done at home with basic tools.

Things You'll Need

  • 1/4-inch ratchet and socket set
  • Replacement blower motor
  • Look underneath the passenger side of the dashboard. Remove the three bolts holding in the black plastic trim panel at the base of the dashboard using the 1/4-inch ratchet and socket. Pull the panel out of the way.

  • Locate the blower motor on the underside of the dash. This looks like a farm silo, is black in color, and approximately 6 inches deep. Unbolt the blower motor from the climate control system using the 1/4-inch ratchet and socket.

  • Lower the blower motor out from under the dashboard. Unclip the wiring harness to the blower motor using your hands. Take the blower motor out of the SUV.

  • Plug the wiring harness into the replacement blower motor. Carefully maneuver the motor under the dashboard and onto the climate control system. Connect it to the system using the factory hardware and the ratchet.

  • Reinstall the lower dashboard trim panel using the factory hardware and the ratchet.

Tips & Warnings

  • The blower motor is often best found at your local Chevrolet dealership, although other GM branded dealers can get you the same part as well. It's difficult to find this piece at an auto part store, and finding one at a junkyard could be hit or miss. Buying it at the dealership is your best bet.
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