Doors locking on their own?

[isp5190]

2009 Tahoe LTZ. Sometimes when we get out and walk away the doors will look on their own without pushing the key fob. No common denominator of when it this will occur. Anyone seen this issue?

 

[gooffeyguy]

I found this in my 2012 manual. I use the delayed locking all the time, but I have to press the door lock button on the armrest when getting out. This allows the wife and kids to get out and still lock the doors without me having to keep hold of the key fob and remotely lock the doors after everyone is out

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[08HoeCD]

I seem to recall having doors lock on their own after I programmed a second remote fob a few years ago. I could not figure out at the time. I put the original fob in a kitchen drawer and, frankly, I forgot about it.