STEP ONE: Determine proper running board length
1) Measure from the rear of the front wheel well, to the front of the rear wheel well. This should be your overall running board length.
2) Measure from end tip to end tip of the running board to determine how much needs to be cut down. (if any)
3) Step two minus step one is how much needs to be cut off the board.
4) There shouldn't be any cutting necessary for these vehicles. A Suburban will take the 93" board and a Tahoe will be 80".

STEP TWO: Cut running boards to proper length
1) Remove the 4 nuts holding the removable end cap in place.
2) With the end cap removed, measure and mark a straight line to cut off the proper amount of the board. (determined in step 1.3)
*NOTE- At this time there should be no light wires under the board.
3) Using a table saw or hacksaw cut along the marked line thru the plastic
and aluminum.
4) Replace the end cap and tighten it with the four bolts and nuts making
sure it is square with the rest of the board. The end cap should slide
back over the board about ¾" - 1".

STEP THREE: Determine proper bracket placement
1) You must equally space hanger brackets apart .
2) Postion hanger bracket, and tec screw to vechicle
3) Now drill out holes thru pinch weld
4) Thread a 5/16" x 1" hex bolt through the pinchweld and tighten a 5/16" nut to plate. (Fig B)

STEP FOUR: Loosely bolt brackets to vehicles
1) Bolt the brackets on by inserting a 5/16"x1" hex bolt through the top hole in the hanger bracket and thru the 1" slot in the bracket, hand tighten a 5/16" nut to secure. (Fig C)
2) Hand tighten the board to the brackets using 5/16" lock nuts
3) Slide board in or out to desired location
4) Tighten down lock nuts under running board

STEP FIVE: Tighten brackets
Fig C
1) Push board tight against vehicle and tighten bolts.
2) Drive tec screw thru bracket and into sidewall
To keep bracket tight in place.
3) Check that all brackets are tight before stepping on boards.