GMC 2006 Sierra - Manual (Page 108)

Rear Doors
Extended Cab
Your vehicle may be equipped with a rear access
door(s) that allows easier access to the rear area
of the extended cab.
To open a rear access door
from the outside, first open
the front door. Then, use
the handle located on
the front edge of the rear
access door to open it.
You must fully close a rear access door before you can
close the front door.
To open a rear access door
from the inside, the front
door must be opened first.
Then, use the handle
located on the inside of the
rear access door to open it.
Crew Cabs
If your vehicle is a crew cab, you can open your doors
from the inside or outside. Your vehicle may also have
a feature which prevents children from opening the rear
doors. See Rear Door Security Locks (Crew Cab) on
page 2-13 for more information.
Tailgate
You can open the tailgate by lifting up on its handle
while pulling the tailgate toward you.
To shut the tailgate, firmly push it upward until it
latches.
After you put the tailgate back up, pull it back towards
you to be sure it latches securely.
2-14