GMC Terrain Denali 2015 Owner's Manual page 299

10-82 Vehicle Care
Use the following guidelines for
proper floor mat usage.
The original equipment floor
mats were designed for your
vehicle. If the floor mats need
replacing, it is recommended
that GM certified floor mats be
purchased. Non-GM floor mats
may not fit properly and may
interfere with the accelerator or
brake pedal. Always check that
the floor mats do not interfere
with the pedals.
Use the floor mat with the
correct side up. Do not turn
it over.
Do not place anything on top of
the driver side floor mat.
Use only a single floor mat on
the driver side.
Do not place one floor mat on
top of another.
Removing and Replacing the
Floor Mat
The driver side floor mat is held in
place by two retainers.
1. Pull up on the rear of the floor
mat to unlock each retainer and
remove.
2. Reinstall by lining up the floor
mat retainer openings over the
carpet retainers and snap into
position.
3. Make sure the floor mat is
properly secured and verify that
it does not interfere with the
pedals.