Power Lock Partially Functional (Driver Rear)

Whether I select the lock/unlock button from my key fob OR the button on the vehicle door, my rear door on the driver side only responds 50% of the time. While this is not a major issue, it's been happening for about a year, and it's starting to drive me crazy. I try to avoid going to the dealership whenever possible.

I'm assuming this is probably an electrical issue or shortage, but I'm not exactly sure of where to begin.

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crwdns2931729:0crwdne2931729:0: Mha 4, 2025

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Hi Ben,

I ran into a similar issue with my son's 2003 Cadillac Deville. As it turns out, the problem was in the set of wires that run between the door frame and the door itself, so that's the place I'd suggest you start. Those wires get flexed every time the door is opened and closed, and as you can see from the harness on my son's car, eventually they give up.

Yours aren't likely to be this bad, but you see what can eventually happen.

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2014-Present GMC Sierra

Power Lock Partially Functional (Driver Rear)

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