GMC 1999 Sierra 1500 Pickup Owner's Manual page 177

Press (+) to emphasize a frequency, press (-) to de-emphasize it. It's best
to begin with all the controls in the middle position, then adjust each control
as you like. Observe the VF display for relative emphasis.
Cr02
This button sets tape bias. When playing high bias chrome or metal tapes,
press Cr02 (the light in the button will come on). When playing standard
tapes, press the button again (the light will go out).
PROG
To go from one side of the tape to the other, press the PROG button.
Observe the lighted arrows to determine which side of the tape is being
played.
If a tape is inserted with side "1" (or
' X , )
up, men the up arrow means that
that side is being played. Likewise, a down arrow would indicate that side
"2"
(or "B") had been selected. The player will automatically switch to the other
side of the tape when the first side ends.
EJECT
Press EJECT to eject the cassette tape from the player (the radio will then
FWD
To rapidly advance the tape, press FWD. The light in the button will be lit
and the tape will rapidly advance until you press the REV button lightly.
play.)
SEEK
To search for the next selection on the tape, forward or back, press SEEK
(the light in the SEEK button will be lit) and either FWD or REV. For the
seek mode to stop, there must be at least a 4-second gap between
selections on the tape.
REV
To rapidly reverse the tape, press REV. The light in the button will be lit and
the tape will rapidly reverse until you press the FWD button lightly.
REPT
Press REPT to repeat the currently playing selection on the tape. For the
repeat to stop, there must be at least
a
4-second gap between selections.
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