I am towing with a 2008 Duramax with the 6.5 foot bed, which these days is considered a standard bed. (I know it isn't a 2014 Duramax but it is a GM, nudge, nudge, wink ,wink) I have a Reese manual slider, mainly because our subdivision is private and our roads are narrow. I needed the extra room to back into my driveway. I use my slider religiously whether I need it or not. I have seen too many posts that people do not use their slider until that one time when they turn too far and dent the cab or blow out the rear window because they didn't use it.
