If you hit the button twice do the other doors unlock? If so I would say its the drivers lock actuator.

 

Interesting that you say that. I noticed all doors unlock except the drivers side. If it is the actuator are those costly to replace? Its just irritating for this to happen on a pretty new truck. Thank you for responding

 

Does the door lock with the key fob? As a long shot, you can also try disconnecting the battery to see if it resets and starts working again. The fact that it just clicked leads me to believe it tried unlocking the door. Also, does the lock/unlock buttons do anything? If so, it is not the actuator.

 

Some time back my lights would flash as normal but the locks would not respond to the fob buttons. This happened after pressure washing the underside of the truck. I pulled the CCM connectors, blew them dry, applied dielectric grease and all has been good since.
I don't pressure wash the underside any more.

 

Same thing has happened to me Help



I washed the underside of my truck after a snowmobiling trip, now my Locks arent working. Key fob blinks the lights and tyrns on and off the alarm but the locks dont work with the fob or the lock/unlock buttons on the doors. I cant find any fuses listed for door locks. I would like to try drying the ccm but want to confirm where it is? I think in the engine compartment firewall passenger side but not sure? How do those plugs come off? Thanks for any help.

 

Had this happen on my 09 Malibu had to replace all the actuators they were $100 bucks a piece on eBay.

 

Sooo to add more intrigue three doors lock with the fob. The drivers side door doesn't lock. All others do. I went and checked the settings and all doors is checked. Meaning when the fob is used all doors will (should) unlock. I am going to try the "reboot" if you will to see if it needs resetting.

 

I disconnected the battery kind of like a reboot. Nope. The lock clicks and does not lock or unlock. Must be the actuator probably. Thanks everyone for your thoughts.

 

you could try lubing inside the latch on the door, shoot some wd-40 all round it there just in case. You might get lucky.

If it is bad it's not a horribly hard job, but everything is kind of expensive nowadays...

If an after market actuator is available that will help costs.

 

To tell if it's the actuator, uses the lock/unlock button on the door. If the actuator works with the door button, the actuator is good. Actuators are a fairly common failure.

 

Yet another piece to this puzzle, nine times out of ten when I put the truck in drive ALL doors lock. Yes even the drivers side. Now I am wondering if it might be some relay switch. Ah hell who knows. Now I use the key to lock and unlock to drivers door.

 

try lubing it, might just be sticking......

 

This hasn't happened to me in my Colorado. But I previously had a Tacoma and the Key Fob messed up. I had to program it again. Have you tried That? You do certain steps to reprogram it. I am sure there are YouTube videos. Just trying to help.

 

Could also try the mychevy or onstar app and see if that works.

 

Thank you for your idea. Both fobs are affected if it is my fobs.

 

This is going to be an on going puzzle I think. When driving all locks unlock AND lock with the fob. When I shift into drive or park all locks lock and unlock. When i use my fob outside of the truck three locks lock and unlock. The drivers door does not. The same when I use the onstar app. The drivers door lock clicks but does not lock or unlock. Maybe a relay of some sort. Electrical issues can be a bear to track down. Happy Saturday.

 

That is puzzling. Are you sure you can hear the drivers door click when it doesn't work? I hope it's not the BCM, I'm pretty sure that is the only thing that controls the drivers lock seperatly.

Try to really narrow it down. Earlier you said it worked while driving 9 out of 10 times? I'm wondering if the extra voltage when it is running helps kick the actuator. If it clicks it is abviously getting a signal. Don't forget there are mechanical things happening too. (actuator and lock) Did you try lubing it? (3rd time I've meantioned this) Good luck

 

Yes I lubed what I had access to without taking off the panel. I appreciate everyone's insites and thoughts

 

And now all door locks and fobs work as designed. No explanation but I will take it. Again thank you all.

 

I would also like to know where the ccm is my remote works perfectly except it wont lock the doors it will set alarm and unlock and when I put it in gear it won't lock but if I lock them and put it in park they unlock

 

 

Apparently they haven't fixed this issue yet. I have a 2021 with identical symptoms. Less than 10k on it. It's intermittent every few days and will do it with both fobs. Sometimes I don't realize until I return to find that the driver door didn't lock. It then the horn chirps until I put the key in the on position. Can't believe it would be a mechanical issue. Most likely electrical or computer.
Seems like one of those problems that mechanics will throw parts at until the problem goes away.
Is there a reset process that can work without having to pay the dealer.