GMC Sierra Denali 2006, Owner'S Manual, Page: 210 / 438

CD Changer Errors
CHK CD (Check): If this message appears on the
display, it could be for one of the following reasons:
•
It is very hot. When the temperature returns to
normal, the CD should play.
•
You are driving on a very rough road. When the
road becomes smoother, the CD should play.
•
The CD is dirty, scratched, wet, or upside down.
•
The air is very humid. If so, wait about an hour and
try again.
•
There may have been a problem while burning
the CD.
•
The label may be caught in the CD player.
•
The CD player is very hot.
If the CD is not playing correctly, for any other reason,
try a known good CD.
If any error occurs repeatedly or if an error cannot be
corrected, contact your GM dealer. If the radio displays
an error message, write it down and provide it to
your GM dealer when reporting the problem.
Theft-Deterrent Feature
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 will not operate and LOCKED will appear on
the display.
When the radio and vehicle are turned off, the blinking
red light indicates that THEFTLOCK
®
is armed.
With THEFTLOCK
®
activated, the radio will not operate
if stolen.
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