GMC 2007 Sierra 1500 Pickup, Owner'S Manual

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CLEAN: If this message appears on the display,
the cassette tape player needs to be cleaned. It will
still play tapes, but it should be cleaned as soon as
possible to prevent damage to the tapes and player.
See
Care of the Cassette Tape Player on page 350 .
If the cassette tape is not playing correctly, for any
other reason, try a known good cassette.
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.
CD Adapter Kits
It is possible to use a portable CD player with the
cassette tape player after activating the bypass
feature on your tape player.
To activate the bypass feature, perform the
following steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the TAPE DISC button for
five seconds. READY will appear on the
display and the tape symbol on the display
will flash, indicating the feature is active.
4. Insert the adapter into the cassette tape slot.
It will power up the radio and begin playing.
The override feature will remain active until the
eject button is pressed.
Playing a CD
Insert a CD part way into the slot, label side up.
The player will pull it in and the CD should
begin playing. If you want to insert a CD with the
ignition off, first press the eject button or the
INFO knob.
If the ignition or radio is turned off with the CD in
the player, it will stay in the player. When the
ignition or radio is turned on, the CD will
start playing where it stopped, if it was the last
selected audio source.
When a CD is inserted, the CD symbol will appear
on the display. As each new track starts to play,
the track number will appear on the display.
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