It is definitely possible to run a cable to the actuator arm because forum members have done it... One ran a cable inside a plastic tube that terminated inside the left rear storage compartment.
However, be aware that the actuator is NOT spring loaded, but rather a motor that is driven open or closed by reversing polarity... Therefore, to pull it open you would have to deflect the arm, or slowly pull the actuator into the open position against the motor and drive gear resistance, not easy.
The good news is that it will stay in whatever position it is in when last energized.
This is most likely the reason GM did not include a manual release like on previous models.
I still say the best solution is to just remove the actuator completely and forget about it.