GMC Terrain: Front Seats / Manual Reclining Seatbacks
Warning
If either 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
seatbacks to be sure they are
locked.

To recline a manual seatback:
- Lift the lever.
- Move the seatback to the
desired position, and then
release the lever to lock the
seatback in place.
- Push and pull on the seatback
to make sure it is locked.
To return the seatback to the upright
position:
- Lift the lever fully without
applying pressure to the
seatback, and the seatback will
return to the upright position.
- Push and pull on the seatback
to make sure it is locked.
Lumbar Adjustment
If equipped, press and hold the front
or rear of the control to increase or
decrease lumbar support.
Reclining Seatbacks
Warning
Sitting in a reclined position when
the vehicle is in motion can be
dangerous...
To adjust a power seatback,
if available:
Tilt the top of the control
rearward to recline.
Tilt the top of the control forward
to raise.
..
Other information:
The Diesel Particulate Filter (DPF)
system filters soot particles out of
the exhaust gases. The DPF is
under the vehicle in the exhaust
system.
Depending on a number of factors
monitored by the engine computer,
the DPF will need to be cleaned of
accumulated solids. When a
cleaning is needed, the engine
computer will initiate a self-cleaning
function that runs automatically
during drivin..
The engine air cleaner/filter is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment Overview.
When to Inspect the Engine Air Cleaner/Filter
For intervals on changing and
inspecting the engine air cleaner/filter, see Maintenance Schedule.
How to Inspect the Engine Air Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
clea..