Question about Chevrolet Astro
Remote will lock doors but won't unlock
Take your fob to an auto parts store or dealer and have them test it, i bet it is bad and worn out, the new fob has to be programmed to your car
Posted on Jan 15, 2013
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Posted on Jan 02, 2017
The rear doors probably dont come w accuators in them. Meaning that the rear doors alot of times don't have power options. If you are certain that your rear doors have factory power locks then I would say it's a wire somewhere...did you try a double click of the unlock button. My two door chevy truck unlocks the driver door with one click and the pass door requires a double click. Hope this helps !
Posted on Mar 09, 2011
Testimonial: "**I posted this as a comment. But thanks bro!** Thanks bro. I was hoping it would be something dumb I could do, however my wife may not let me. I am n"
SOURCE: won't open my door when
can you manually unlock the lock and open the door?? Is it more than one door or just one specific door? If its just one door, yourcactuator inside the door may be bad or you have a wire issue. If its all the doors, more than likely you blew a fuse or a relay(id say fuse)
Posted on May 23, 2011
SOURCE: I have a 2003 Chevy
If you can hear the actuator clicking then the plastic ends that attach the rod lock/latch to it has most likely broke off. It's fairly common on the Tahoe and Blazer for this to happen. You can open the hatch and gate by removing the inside plate from latch handle and prying the latch open manually. I hope this helps.
Posted on Jul 02, 2011
More than likely the connecting rod that goes from the door lock actuator to the locking mechanism itself came unattached. These rods are usually held in place by a small piece of plastic that the rods "pop" in and out. The only other thing i can imagine possible is that the door lock itself is actually seized up. In order to attempt to fix this, you would have to remove the door side panel to see the inner workings of the door, and this is quite difficult on most side sliding doors (i have a 2000 pontiac montana w/dual sliding doors). Hope this can help you solve your problem.
Posted on Oct 24, 2011
Tips for a great answer:
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DOOR LKS fuse
Driver door lock actuator
Driver door lock switch
GMLAN serial data link
Keyless entry transmitter
Passenger door lock actuator
Passenger door lock switch
Remote control door lock receiver (RCDLR)
The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
If the value does not change, refer to Door Lock Switch Malfunction.
Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.
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