Sierra Classic 3500 4WD V8-8.1L (2007)
1. Move the control valve assembly (4) into position under the transmission case. Engage the pin (1) in the manual selector valve (2) into the slot in
the detent lever (3).
2. Align control valve assembly (1) with the locating pins (2) in the transmission case. Seat the control valve assembly against the transmission case
and hold the position.
