Sierra Classic 2500 4WD V8-8.1L (2007)
14. Install the transmission support crossmember.
15. Install the transmission support crossmember bolts.
Tighten the bolts to 95 Nm (70 ft. lbs.).
16. Lower the transmission onto the transmission support.
17. Install the transmission mount to transmission support nuts.
Tighten the nuts to 40 Nm (30 ft. lbs.).
18. Remove the support from the transmission.
19. Lower the vehicle.
