You have answerd my original question, which I am thankful for, but can you believe that GM doesn't just sell the lock actuator by itself. You have to purchase the entire bracket and wires that the actuator sits on, which is more than $300 for a part that I know the Chinese probably manufactures for about $10 bucks. I've been looking in junk yards, but here lately they are living up to their names :-).
Thanks again, and I may send a new post to see if anyone is aware of an aftermarket shop that sells the GM lock actuators. I have found a couple websites that sell a universal actuator, but just looking at the picture, I can tell that I will have some problems trying to make it fire in the proper sequence to open the hatch and lift gate.