Iits a 2009 gmc plckup. Had it in\*\*\*\*\*high and when ...


Iits a 2009 gmc plckup. Had it in\*\*\*\*\*high and when i went to start it and go it had dropped into 4low and will not change into\*\*\*\*\* Mechanic's Assistant: Have you checked the battery, particularly the terminal c...

Iits a 2009 gmc plckup. Had it in\*\*\*\*\*high and when i went to start it and go it had dropped into 4low and will not change into\*\*\*\*\* Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded? No Mechanic's Assistant: What is the model of your '09 GMC? Serria Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? No

Automotive Expert
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Automotive Expert
It sounds like the 4wd actuator has failed, if it will not cycle out of 4LO while in neutral i would think that is the case.

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Automotive Expert
Without proper diagnostics even if i know it is likely the 4WD actuator you would not know for sure. i wouldn't ever recommend starting to replace expensive parts without scanning for codes to know what is going on.

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