Folks:
A few weeks ago on my 2008 Denali XL the liftgate stopped working automatically. Switch set to open in side, push the button and no lift. You don't hear the motor run either. That said, the lock mechanism always hums and runs. I suppose it is unlocking or locking (not sure). I will replace both struts as they are weak. I just checked the fuse box and #42 is labeled as lift gate lock 15A. It's not blown. Also, when you do push the interior button to open, rear lights flash, you hear the hum of the lock disengaging and then nothing.
I just wanted to know if there is a diagnosis process or if I need to get into the motor to know what is wrong--or if worse, the motor has failed and I should simply replace. I just read a few comments in other places that say there is also a Liftgate Motor Control Module. Any way to know if the issue is the motor or the module? The motor looks to be $300 and the module is close to that price. Hate to try one and lose that cash to find out its the other part.
Thx
TKH
A few weeks ago on my 2008 Denali XL the liftgate stopped working automatically. Switch set to open in side, push the button and no lift. You don't hear the motor run either. That said, the lock mechanism always hums and runs. I suppose it is unlocking or locking (not sure). I will replace both struts as they are weak. I just checked the fuse box and #42 is labeled as lift gate lock 15A. It's not blown. Also, when you do push the interior button to open, rear lights flash, you hear the hum of the lock disengaging and then nothing.
I just wanted to know if there is a diagnosis process or if I need to get into the motor to know what is wrong--or if worse, the motor has failed and I should simply replace. I just read a few comments in other places that say there is also a Liftgate Motor Control Module. Any way to know if the issue is the motor or the module? The motor looks to be $300 and the module is close to that price. Hate to try one and lose that cash to find out its the other part.
Thx
TKH
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