You just have to pull the RTD fuse under the hood on the autoride trucks, then disconnect the battery for a few minutes. Bilsteins for these trucks are:
Front - BILF4-BE5-E672-H0
Rear - BILF4-BE5-E380-H0
The fronts are for the hummer h3 but work extremely well on our trucks, only difference is the hummer shocks use an integrated bumpstop but are the exact same dimensions as the front application bilsteins for our vehicles.