BEST COVER ON THE MARKET!
I have a 2008 Duramax LMM longbed crewcab. there are plenty other covers more expensive an cheaper, but this cover is probably of the top percentage best you can buy and for the best buck! I had to go back and adjust the clamps a couple times when things didn't line up initially, but I've got it perfect now. No other cover has as consistently good ratings as this cover does. It has rained and ive washed it several times and there's no water in the bed at all. HIGHLY RECOMMENDED!