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I got the info on how to do this from this thread:
http://www.gmt400.com/forum/showthread.php?1026-How-to-Replace-Blower-Motor-Resistor
But that thread doesn't have any pics so I figured I'd do a write up that included pics since some are more visual people.
This is to fix the issue of the HVAC controls only working on select fan speeds (if at all). So let's get to the steps and the pics.
1. Clean out glovebox
2. Remove glove box
3. Locate the resistor on top near the back.
4. Use a flat blade screwdriver to GENTLY get the connection disconnected from the old resistor
5. There are two 7mm screws holding the resistor down. Unscrew those. It also helps to swing that relay out of the way that's on the left
6. Work out the old resistor then reverse the process. It's not hard but does take some patience
Old vs new
http://www.gmt400.com/forum/showthread.php?1026-How-to-Replace-Blower-Motor-Resistor
But that thread doesn't have any pics so I figured I'd do a write up that included pics since some are more visual people.
This is to fix the issue of the HVAC controls only working on select fan speeds (if at all). So let's get to the steps and the pics.
1. Clean out glovebox
You must be registered for see images attach
2. Remove glove box
You must be registered for see images attach
3. Locate the resistor on top near the back.
4. Use a flat blade screwdriver to GENTLY get the connection disconnected from the old resistor
You must be registered for see images attach
5. There are two 7mm screws holding the resistor down. Unscrew those. It also helps to swing that relay out of the way that's on the left
6. Work out the old resistor then reverse the process. It's not hard but does take some patience
You must be registered for see images attach
Old vs new
You must be registered for see images attach
Last edited: