Bought 2 of these for my 2007 GMC Sierra Z71 4x4 1500. The fitment could have gone better for me. Learned the hard way not to cut the nylon strap that compresses the shock until the top is bolted on and you are ready to let the shock expand to the bottom holes. I ended up using my jack without the grip pad to raise the extended shock so it lowered back into the bolt holes. All in all, I'm glad I bought the set. The original AC Delco driver's side damper definitely failed on the driver's side at 130,000 miles.