How do you replace rear latch release switch on a rendezvous?

You have to take the trim panel off of the inside of the tailgate. Not just the removable section across the middle, but the whole thing. There are a series of screws that hold the tail light assembly to the back of the tailgate. You need to undo all of the nuts on the inside to release the tail light assembly, and be sure to unplug the harness as you remove it. The pressure switch is bolted behind the tail light assembly. Once you have the assembly out of the way, just fish the plug for the switch down and out with the switch. Change the switch and put it all back together.