Look at the link I posted, that should help you. (:
Remove the HVAC rear module auxiliary assembly.Disconnect the electrical connectors from the rear blower resister auxiliary.Remove the air outlet duct from the rear blower motor controller auxiliary.Remove the screws from the blower motor rear resister auxiliary.Remove the rear blower motor resister auxiliary.Replace the resister and install new thermal gasket.................
if you lost one or two fan speeds you need to change the blower motor resister. it sells for around $60.00 at a dealer only.
Replace the blower motor speed resister.
chevy trucks have the blower resistor pack in the bottom of the airbox on the passenger side under the dash. i would assume the suv's would be the same.
HVAC (heat and air conditioning) will only work on highest speed. Possible damage to connector or fire.
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AutoZone.com will show you a pic.............
usually mounted on or next to blower motor
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Under the hood, passenger side firewall, close to the heater blower motor.