Power Lock Doesn't Work In Rear Barn Doors

[Tahoetime]

My rear barn door doors won't lock or unlock under power, all of the other 4 doors work fine, but nothing in the rear doors.......

 

 

I cleaned the contacts with electronics cleaner, but it made no difference, any ideas?

 

 

 

Thanks!!!!

 

 

 

(its a 99' Tahoe with 90K miles)

[topdj]

both the contacts and the plungers ? above the doors, I had the same d**n problem

[98 Z71 SLT]

power door lock actuator, held in place with 2 rivets.

 

have to take off the passenger side rear bran door panel for access.