Back door won't lock even with key

[big_rooster]

I have a 2001 excursion that the back door won't even lock with the key. Truck needs new power locks all the way around but i'm baffled as to why i can't lock the rear door.

 

[IHC Power]

Door locks

Yea the lock actuators are cheaply designed and don't last very long, as far as your question is it a passenger door or the rear split gate doors that won't unlock?

 

[aklim]

Only lock at the back I know of is in the liftgate.

 

[JLDickmon]

I had a Taurus like that...

 

[big_rooster]

I'm starting to wonder if it was broke into like they break into other doors and break up all the plastic parts. Guess i'm gonna have to take it all apart.

 

[CHPMustang]

I'm leaning to linkage. Remove the rear inner panel to have a looksee.

 

[BIG JOE]

I'm leaning to linkage. Remove the rear inner panel to have a looksee.

X2

On my 2K, one of the plastic linkage retainer clips wore out, linkage arm fell off. no worky.