Power door lock won't work on drivers door can only be locked/unlocked manually
I had the same problem but on the passenger side door. The wire harness on the passenger side had broken wires. Purple wire was for the lock and thicker blue and darker grey was power for the windows. I used butt connectors to repair and it worked like a charm. Area was tight to work in between vehicle frame and door. Was easier to remove door panel and disconnect harness at vehicle frame and pull harness through door to complete the repair.
SOURCE: 2005 chevy equinox rear hatch not locking
I've had the exact opposite issue with my 2005 Equinox.
My rear door is locked and will not unlock.
SOURCE: door locks and power window
Just did this procedure I got from coloradofans.com forums:
"any type of power/voltage change
seems to trigger this issue
The most common symptom is power
locks fail and only the driver window quits, however that is on the
extended cab.
Steps to fix and it works every time.
take
door panel off driver's door
Disconnect the wiring attached to window
and power lock control unit
disconnect battery cables
connect
the negative to the positive cable(((NO BATTERY CONNECTED)))
This
will act to short residual voltage in the system
5 minutes later
place
the key in the ignition and turn to the run position
connect the
wiring to the window/lock controller
connect the negative cable to
the battery
then the positive
open drivers side door
turn key
to the off position((do not remove yet)) you should get a series of
dings through speakers telling you the key is still in the ignition
once
it begins dinging pull the key out and you should hear the door lock
solenoids trigger and the windows should work." - Coloradofans.com forums
SOURCE: Power door locks won't unlock + tailgate won't open
your issue involves the master control switch panel on the drivers side and or the passenger side as well some how the contact inside the switch assembly has either shorted out or no longer makes contact for the unlock side of the circuit. replace the drivers side panel switchs it's either a series of switc hs or mostimes one sigle board of switchs. you are better off going to an auto parts store rather than a GM dealership this will save you quite a bit on cash on the parts. now as to the rear tailgate. if it is electronic controled and there is an issue with the master switch you can,t manually unlock it because of a safty issue built in the system. you can manually unlock the passenger compartment doors for thew same reasons of safety but doesn't apply to the tailgate. just replace the parts and this will take care of the problem
SOURCE: 2003 Chevy Avalanche rear doors won't lock automatically
The rear doors will not lock with the keyless remote, the drivers master switch
SOURCE: 2001 Chevrolet Impala Door Locks Suddenly Quit Working
Passenger side of the fender under the hood - check the fuse relay box - about $12.00 a piece - they do go bad from time to time.
exchange the power lock relay with another one and test the locks.
then put the relay back and go to the autostore.
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