GMC 1994 Sonoma Owner's Manual page 129

AUTO DNR
@
This unit is equipped with an automatic Dynamic Noise Reduction system.
DNR'reduces background hiss on AM and FM radio broadcasts, as well as
on cassette tapes.
DNR@ is a registered trademark of National Semiconductor Corporation.
To Play A Cassette
Your tape player is built to work best with tapes that are 30 to 45 minutes
long on each side. Tapes longer than that are so thin they may not work well
in this player.
Once the tape is playing, use the upper and lower knobs for volume, balance
and fade, just as you do for the radio. The arrows indicate which side of the
tape is being played.
Fast Forward
Press the button with the arrow pointing in the same direction that the tape
is playing. The arrow light next to the arrow button will be lit. To stop fast
forward, press the STOP-E JECT button.
Reverse
Press the button with the arrow pointing in the opposite direction that the
tape is playing. The arrow light next to the arrow button will be lit. To stop
reverse, press the STOP-E JECT button.
SEARCH
Press the SEARCH button.
Press
FWR
to go to the beginning of the next selection.
Press REV and the tape will reverse to the beginning of the current
selection.
Cr02
The Cr02 button lets you set the system for the type of cassette being used.
If you are using chrome or metal tapes, push the Cr02 button in.
PROGRAM
To change sides of the tape, press the PWR-VOL-PROG-RCL knob.
STOP-E JECT
To stop playing a tape, fully press this button (the cassette will be partially
ejected, and
the
radio will begin playing).