Cadillac CTS 2013 Owner's Manual page 382

10-106 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 pedals. 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's side.
Do not place one floor mat on
top of another.
The driver side floor mat is held in
place by a button-type retainer.
Removing and Replacing the
Floor Mats
1. Pull up on the rear of the floor
mat to unlock the retainer and
remove.
2. Reinstall by lining up the floor
mat retainer opening over the
carpet retainer and snap into
position.
3. Make sure the floor mat is
properly secured in place.