Does the switch inside for that door work ? Does the power window work for that door ? Check fuse DDM - 15 amp I/P fuse panel . Do you know where the insturment panel fuse box is located ?
Fuse Block - I/P
Left of the I/P behind the side trim panel
# 4
DDM Fuse
15A
Driver Door Module (DDM)
Do you know anything about automotive electronic's , control module's ? Serial data communication networks ?
Circuit/System Description
The driver and passenger door lock and side window switches are integrated control module switch assemblies. The DDS and PDS door lock switches are normally open, 2 position rocker type switches, with detents for lock and unlock. The DDS and PDS are directly connected to the respective door lock actuator through the door lock actuator control circuits. When a door lock or unlock function is activated from the DDS or PDS, a serial data message lock or unlock command is sent to the other door switch and body control module.
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 subaru impreza WRX unlocking doors with key
usually after opening the door you can deactivate the alarm by pushing th unlock button or simply insert keyy in ignition and turn it on.
SOURCE: 2008 Tahoe-Remote won't lock or unlock the Drivers side lock
more than likely the lock solenoid in the driver side door is not working. it located near the latch inside the door.
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SOURCE: 2008 chevy malibu. how to program keyless entry remote
You must take it to the Chevy dealer.
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SOURCE: good afternoon....what would cause my 2008 Chevy
It could be the power lock motor. You could have a short or bad wiring harness. Might just be a fuse that connects to both. But since you said it's only the driver side. When the power lock motor is bad it can trigger your alarm because they're wired together.
Hope that helps. Good luck.
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