Front passenger door not locking.

[hamd1719]

I got the car all polished the idiots who did it left the interior lights on overnight and the battery was drained got a new battery from the dealer. After getting back the car the front passenger door lock was acting funny sometime not opening or locking. Today it's nit operating at all it's just stuck. Either open in manually or lock it manually. What's the problem do I need to go to the dealer or is it something DIY.?

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[08HoeCD]

Depending on the year of your ride, the most likely cause is a failed door lock actuator, a common failure. The OEM part has an inferior motor which goes bad. I believe that 2007-2014 model years for Tahoe/Yukon/Escalade utilize the same poorly engineered actuator.