Power door locks only unlock some doors?

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Velcro

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So I recently bought a suburban 2500. Before recently none of my locks worked at all. Right now my main problem is that all my doors except the drivers will not lock with the power locks. My rear passenger door won't do anything at all. I've checked all the fuses I am aware of and replaced the relays in the dash fuse box. Switches are good and I replaced the front passenger actuator and it did nothing.

It's a 2000 NBS Suburban 2500 6.0 4x4 with rear barn doors.

Thanks in advance for any help. :)
 

dragracer637

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I had the same problem in my 2000 Yukon xl 2500.... Back passenger door would not lock or unlock but all others would. Bought a new lock actuator and it still didn't work. Pulled assembly back out and cleaned it good, cycled it about 50 times while on the bench, reinstalled and been working fine for a few weeks now.
 
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