GMC 2008 Yukon Denali Owner's Manual page 25

Overhead Console
Buttons shown
When accessing the third row seats, if your vehicle
has them, from the outside of the vehicle, press
the button on the panel behind either rear door.
One press of the button automatically folds
the seatback flat and tumbles the seat forward.
There will be a slight delay between the folding of
the seatback and the tumbling of the seat.
2. From the front seats,
press one of the
automatic seat release
buttons located on
the overhead console.
Returning the Seat(s) to the Sitting
Position
To return the seat to the sitting position, do the following:
1. Pull the seat down until it latches to the floor. The
seatback cannot be raised if the seat is not latched
to the floor.
CAUTION:
{
If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
push and pull on the seatback to be sure it is
locked.
2. Lift the seatback and push it rearward. Push and
pull on the seatback to make sure it is locked.
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