Buick 2006 Rendezvous Owner's Manual page 106

Liftgate Release
Liftgate Handle
Your vehicle is equipped with a liftgate release
touchpad, located on the inner side of the liftgate
handle.
2-12
To open the liftgate using the touchpad, do the following:
1. Put the vehicle in PARK (P).
2. Unlock all of the doors.
3. Lift up on the liftgate handle.
If your vehicle has a remote keyless entry transmitter,
you may unlock the liftgate by pressing the REAR button
on the transmitter, then open the liftgate manually by
lifting up on the liftgate handle. Pressing REAR while
the Content Theft-Deterrent is active allows you to open
the liftgate while all other doors remain locked. See
Content Theft-Deterrent on page 2-15
Notice: If you open the liftgate without checking
for overhead obstructions such as a garage
door, you could break the liftgate glass. Always
check to make sure the area above the liftgate
is clear before opening it.