GMC 1976 ZEO 6083 Maintenance Manual page 457

A-4326
Figure 10-Clutch, Band and Sprag Application
TRANSMISSION 7- 9
SELECTOR FORWARD
DIRECT FRONT INT . INT. ROLLER
REAR
POSITION
CLUTCH
CLUTCH
BAND
CLUTCH
SPRAG CLUTCH
BAND
PARK-NEUT.
OFF OFF OFF
OFF OFF OFF
OFF
DRIVE 1 ON OFF OFF
OFF OFF ON
OFF
LEFT 2 ON OFF OFF
ON
ON
OFF
OFF
3
ON
ON OFF
ON OFF OFF
OFF
DRIVE 1 ON OFF OFF OFF OFF ON
OFF
RIGHT 2
ON
OFF ON ON ON OFF OFF
LO 1
ON OFF
OFF OFF OFF ON ON
2 ON OFF ON ON ON
OFF OFF
REV.
OFF ON OFF OFF OFF
OFF ON