Airbagit Tow Kit 2001-2010 GM HD Heavy Duty 4 Link - Manual (Page 4)

10. The rear shock mounts have provisions to install directly over 2 existing rivets that
attach the rear cross member to the frame. Mark and drill the holes and attach the
rear shock mounts.
11. Remove factory differential cover and drain fluid
12. Mount differential pan hard bracket between the differential cover and differential
housing with link mount provisions towards the passenger side of the truck.
13. Re fill rear axle with the manufacturer’s recommended fluid type and volume
14. Install the pan hard bar with the bushing end on the frame and the heim joint at the
axle