GMC 1996 Savana Van Owner's Manual page 138

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Playing a Compact Disc
PWR: Press this knob to
turn the system on. (Please note
that you can also turn the system on when you insert a
compact disc into the player with the ignition on.)
Insert a disc partway into the slot, label side up. ,The
player will pull it in. Wait a few seconds and the disc
should play. CD and a CD symbol will also appear on
the display. Anytime you are playing a CD, the letters
CD will be next to the CD symbol.
If the disc comes back out and ERR appears on the
display, it could be that:
0
You are driving on a very rough road. (The disc
should play when the road gets smoother.)
The disc is upside down.
It is dirty, scratched or wet.
It is very humid. (If so, wait about an hour and
0
The disc player is very hot.
Press RECALL to make ERR go off the display.
try again.)