BAKFlip G2 Hard Folding Tonneau Cover for 2015-2022 Chevy Colorado / GMC Canyon Crew Cab (5'2" Bed)

Here's the short version. Follow BAK's install sheet (below) for your truck's exact clamp positions and settings.

1. Prep the bed. Make sure the areas where the cover mounts are clean. If your kit has a bulkhead seal, clean the top of the bulkhead with soap and water, then isopropyl alcohol, let it dry and stick the seal from one edge to the other, trimming the excess (no seal is needed with a drop-in bed liner). If your kit has rubber filler strips, stick them between the plastic bed cap and the metal rail, one 6-8" from the bulkhead, one at the tailgate and one in the middle.
2. Set the side rails. Fit a drain tube to the front of each side rail and set the rail flush with the top edge of the bed rail, drain end toward the cab, pushed all the way forward and square to the bed. Run the tubes behind a bed liner, through the bed plugs or through a 5/8" hole drilled in the bulkhead.
3. Clamp the rails. Hang the clamps as high as they go, the front one 6-8" from the bulkhead and the center one behind the prop rod, keeping the rail level with the bed cap. At the tailgate end use the stake pocket clamp (a standard clamp on 2019 and newer trucks with the Multi-Pro tailgate). Tighten all clamps to 10 ft-lb with a 1/2" wrench or socket, without over-tightening, and repeat on the other side. On 2007-2013 trucks, fit the stake pocket covers near the tailgate.
4. Fit the cover. Slide the two cover retainer clamps into the track under the cover near the cab, and screw the two strap buckles to the front panel by hand with a Phillips screwdriver (BAK says no screw gun). Set the folded cover on the rails at the cab end, centered between them, and turn the retainer clamps clockwise until the lock washer is secure.
5. Unfold and square it up. With the cover still folded, clean its top edge where it meets the cab (soap and water, then isopropyl alcohol) and stick the cab bumpers along it. Unfold the cover to the tailgate and check that each panel is centered side to side and front to back; the tail panel should overlap the tailgate by about 1/2". Shift it on the loosened retainer clamps if needed, then re-tighten them. With a power tailgate, make sure it still opens and closes with the cover shut.
6. Check the latches. Release each latch to make sure it catches the side rails; the sheet shows how to adjust a slam latch that hits or misses. BAK's warranty asks you to re-check every clamp after the first week of driving and now and then after that.