Pontiac 2005 Aztek Owner's Manual page 85

Liftgate/Tailgate Release
To open the liftgate from the outside of the vehicle,
insert the key into the lock and turn it clockwise, or press
REAR on the remote keyless entry transmitter.
Your vehicle must be in PARK (P) or NEUTRAL (N)
for the liftgate to release.
The liftgate will lock when closed. You will have to use
one of the previous options to open the liftgate again.
The liftgate must be opened to release the tailgate.
To open the liftgate from
the inside of the vehicle,
press the liftgate release
button located on
the instrument
panel switchbank.
Once the liftgate is opened, reach inside the tailgate to
lift the handle. Open the tailgate.
Make sure the tailgate is closed before closing
the liftgate.
Notice: If you close the liftgate glass without first
closing the tailgate, damage or breakage may occur.
Always close the tailgate first.
2-11