Trailer-Tow Mirrors - GMC Sierra Owner's Manual

34 Keys, Doors, and Windows

Trailer-Tow Mirrors

Extending Mirrors
Trailer tow mirrors can extend out for better
visibility when towing a trailer.
Manual Extend : If equipped, grasp the
mirror housing firmly and pull back in one
motion, arching slightly toward the rear of
the vehicle.
To return the mirror to its original position,
reverse the motion.
Power Extend : If equipped, press the power
extend button to fully extend the mirror.
Press again to retract.
Resetting the Power Extend Mirrors
Reset the power extend mirrors if:
The mirrors are accidentally obstructed
while extending/retracting.
The mirrors are accidentally manually
extended/retracted.
The mirrors vibrate at normal driving
speeds.