Automatic locks continously going off

It's probably a bad input to the BCM - body control module ! Have it checked for DTC'S - diagnostic trouble codes .
The automatic door lock function can only be enabled by the body control module (BCM) if the driver door open switch and door ajar switches are in the Closed state. For information on programming the automatic door locks, refer to Vehicle Personalization in Personalization.
DTC B3064 or B3069
DTC B3127
DTC B3128, B3133, or B3138
DTC B3132
DTC B3137
DTC B3272
Your best bet , take it to the chevy dealer . Unless you own a GM factory Tech 2 scan tool an have access to factory sevice repair info.
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The outputs to the door lock actuators are controlled by the body control module (BCM). When the BCM receives a lock input from a door lock switch, or a keyless entry transmitter, it applies battery positive voltage to the door lock actuator lock control circuit, a ground to the door lock actuator unlock control, and the driver door lock actuator unlock control circuits. When the BCM receives an unlock input from a door lock switch, it applies battery positive voltage to the door lock actuator unlock control, the driver door lock actuator unlock control circuits, and a ground to the door lock actuator lock control circuit . When the BCM receives an single Unlock input from a keyless entry transmitter, it applies battery positive voltage to the driver door lock actuator unlock control circuit and a ground to the door lock actuator lock control circuit to unlock the driver door. A second Unlock input from the transmitter applies battery positive voltage to the door lock actuator unlock control circuit, and a ground to the door lock actuator lock control circuit to unlock the passenger doors.

This diagnostic procedure supports the following DTCs:
• DTC B3128 Left Front/Driver Door Unlock Circuit High
• DTC B3133 All Door Unlock Circuit High
• DTC B3138 All Door Lock Circuit High

Best guess: Electric door lock that automatically tries to lock the door but is too weak to get it done.

Replacing the drivers door switch most often takes care of this problem. Due to the cost of the part have a dealer confirm this.

is i lockingt after you start it... and does it relese when turn off

If it was the actuator in the drivers door the other doors would still lock. this sounds like a bad connection, test the drivers door switch, the other thing is do the doors lock if you use the pass/door switch to lock the doors? if it doesnt then its not the switch but if it does lock the doors then replace driver door lock switch. if the switch on pass door doesnt work to lock then check wiring. look at wiring going into driver door, look at the door, open it, look at door hinge area and in the middle you will see the rubber boot that holds the wiring for that door. remove the boot or rather slide it back and check for any broken wires. its common for wires to break from opening and closing the door. good day.

Watch these videos .
Door Locks Go Crazy 1
Door Locks Go Crazy 2
Door Locks Go Crazy 3

one of the doors switches is not made (closed )
Check the courtesy light

lock actuator is bad...

the door lock actuators are not working properly/Please rate my response thank you very much