GMC 2011 Canyon - Manual (Page 153)

Black plate (3,1) GMC Canyon Owner Manual - 2011
Infotainment System 7-3
RDS Radios
TheftLock is designed to discourage
theft of your vehicle's radio. The
feature works automatically by
learning a portion of the Vehicle
Identification Number (VIN). If the
radio is moved to a different vehicle,
it does not operate and LOCKED
displays.
When the radio and vehicle are
turned off, the blinking red light
indicates that TheftLock is armed.
With TheftLock activated, the radio
does not operate if stolen.
Operation
AM-FM Radio