avital 4100 power locks in 07 sierra

easiest way is to get a momentary rocker lockswitch from import vehicle or base model 07or older gm classic. then test your 4 wires , 2 will be constant gnd, others will lock or unlock with gnd pulse

I can think of one reason not to use 5-wire actuators - the manual lock location.  I would definitely prefer a separate switch on any late model GM vehicle with the dinky little locks at the back of the door.  If the locks are located by the inside door handle I agree with you that 5-wire actuators are the best thing since sliced bread .

Incidentally I'm kind of picky about doorlock location due to my '04 GTO, which has the absolute worst power lock setup of any car in history - central locking with locks at the rear of the very long coupe door, which involves gymnastics when trying to unlock it, and to make things worse the guy who designed the BCM logic circuits which control the locks was evidently a crack-addled drunk - because the central locking randomly ceases to operate from either door. This is unfortunately not a defective part on my car - many posts on ls1gto.com complain of the same design flaws.

Hopefully soon I'll have my own switch there going to the key cylinder wires which at least seem to lock/unlock all the time. Anyway, I apologize...off topic a bit.

luckystrike - you may also want to look at SPAL. They make switches for doorlock kits, some of which I think might look better with your truck's interior than the older style GM switch.  I would suggest a late-model GM lock switch from a junkyard, but they definitely won't switch your aftermarket setup.