2014 Denali XL Liftgate Issue

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ru660r

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I have an issue where my liftgate will not unlock when it is hot outside. Started doing this last summer, no problems through the winter, and started again this summer. I have replaced the lock actuator. I can hear and feel a clicking at the control module on the lift motor, like a relay, when i try the exterior handle switch, key fob button, and the interior console button. So i believe all the buttons/switches are working properly. Has anyone else had these symptoms? I think it is the control module since I can not find a replaceable relay. Just wanted to check with you guys before I spend the money. Thanks in advance.
 
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ru660r

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Update:

The cause of the issue was chafed wires where they enter the cab. I was also having the issue of the liftgate only opening 1/3 of the way and closing again. Repairing the wires fixed both. Not sure why temperature seem to effect the lock.
 

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