I'm not a mechanic nor is this a "how to" it's just the way i did it.
jack up the vehicle and prop it with a stand
remove the wheel
remove the dust cap with a hammer and screwdriver (the most expensive bahco chisel you can find works really well too)
remove the split pin
undo the two...
Dad and I installed Dobinsons Adjustable Monotube 50mm lift kit in my Colorado 7. I struggled to find any suspension 'how to' videos on Colorados so I thought i'd make one myself. The most helpful part for mine is the part where it shows how to get the strut out from inside the upper and lower arms.