1997 Tahoe Back door lock

Hi all


I just bought this truck about 8 months ago, bought it as is. The truck is in perfect shape and condition, however. The truck has power locks, and when I push the back door button on the key chain, it does absolutly nothing!! When I sit in the drivers seat, I can hear it trying to work but its not. Anyone have any idea what I need to do to get the back door to lock??

Thanks

Eric

i had a problem with my drivers door all the doors would lock and unlock except the driver after taking apart i found that the lock actuator wasnt powerfull enough to move the switch i replaced it 2 rivets and a plug simple fix