Manual Lumbar - GMC T-Series 2007 Owner's Manual

Slide lever (A) to the left to unlock the seat and
slide the seat to where you want it. Release
the lever and try to move the seat with your
body to make sure the seat is locked into place.
To adjust the lower seat cushion forward or
backward, pull up on lever (B) and slide the
cushion to where you want it. Then release
the lever.

Manual Lumbar

To get more support in the lumbar area of your
back, turn the lumbar adjustment knob. The knob
is located on the inboard side of the driver's
seatback and the outboard side of the passenger's
seatback.
23