2010 HHR 2.2
Door locks will not lock with either remotes or door buttons. Also will not lock when putting into gear.
Locks will unlock when putting car back into park, using remotes or using door buttons.
I hear a very faint click down around the BCM. I assume it is the unlock relay in the BCM. I do get a code B1325 - Device power 1 circuit voltage below threshold for secondary system Remote Ctrl Door Lock Rec. Could not read Remote Ctrl Door Lock Rec. User action required. Test manually.
So it seems strange to me that if the remote door lock receiver was the issue I would assume the doors would still lock via the door buttons.
I plan on checking voltages at the BCM for the door lock circuit.
Any help or suggestions would be welcomed

Thanks all.

 

https://charm.li/Chevy%20Truck/2010/...%20Inspection/

 

Have you checked the car battery? Should be at least 12.5 volts.
The code means the battery is suppling less than 9 volts, enough to run the GMLAN and the run/crank relay. Setting of other DTCs is inhibited.

 

Hmm , logic tells me to a replace the batteries in your remotes. Check the battery cages for loose or broken connections. I suggest a battery lobotomy to reset the computer, simply disconnect the negative terminal at the battery for 5 to 10 minutes. Then reconnect.
Tighten the 4 , 7 mm head bolts in the fuse box under the hood, tighten past the clicks, then push all the fuses and relays tightly into place. You can do that whilst the battery is disconnected, give you something to do while you wait.

 

I am going to check battery voltage and run through the testing that greg8453 has led me to this weekend.
I know the charging system is putting out 14.3 volts at idle. I do not know what battery voltage is when engine off. I'll put a meter on it this weekend.
I will try new batteries in the remotes as well and go through the fuse box procedure as Oldblue suggests.
I'll post my findings after this weekend. I appreciate all the suggestions.

 

Did I miss where you checked the fuse?

Does the hatch lock work? As in, does the hatch lock with the remote? When you put it in gear? (You need an assistant to test the later.)

If the lock hatch works, it's likely the door lock fuse or a wire or ground in that circuit. The hatch is on a different fuse that the door locks.

 

Yes all fuses checked good at the under hood fuse box and all fuses on the BCM checked good.
The rear hatch does lock with remotes and door rocker switch. I am not sure about when I put it into gear from park though if the rear hatch locks.
Great suggestion there as well. I will try that as well. I tightened down the fuse box under the hood as Oldblue suggested as well as removed the BCM connectors and reseated them.
Still no change. I will do a BCM reset this weekend by disconnecting the battery for a bit. Then will do some voltage and ground checks per Greg8453.
Thanks for your suggestion.

 

If you've double and triple checked the fuse, that leaves wiring, or much less likely, the BCM. I've read many tales of a bad ground or pinched wire under the front (driver?) seat.

Or, because I've never looked at a wiring diagram for 2010 specifically, I could be all wet. Don?

 

2006-2007 wiring is slightly different all others are the same.

 

Door lock issue resolved.
What I found when I was testing for voltages and continuity at the BCM connections was an apparent bad connection of one of the BCM connectors. I removed these to do my testing and after I reattached them the door locks would then lock as they should from the switch and from the fobs.
I appreciate everyone's help here. Thanks to all who provided input here.