I went with 35x12.50x20 on OEM rims after seeing this thread originally. I bought the oem black option rims and put KO2s on them. I don’t like the sticking out look many folks like and didn’t find aftermarket with oem offset. Truck is stock 3500 with nothing done to bars. You can see in pics they fit perfect and look like they belong IMO. I have about 1000 miles on them. Love the ride too.
H1ghlndr replied to Akwagon's topic in 6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)I didn’t drive a 2500, but my srw 3500 will break free with modest acceleration or taking off towing. The thing moves...
I don't have 5th wheel, but snow-plow and towing as part of 3500. I am wondering if people with no shutters have an option like snow plow prep or something else? Weird that there are 2500s with / without. My initial thesis was 2500 and them and 3500s didn't. What options do people have with and without shutters?
Here is the video I saw. This is a 2020 duramax... From GM: " In addition to the Silverado HD’s larger dimensions and distinctive trim personalities, 2500 and 3500 SRW models are available with active aero shutters for improved efficiency and a taller, more dominant hood line that asserts the trucks’ strength and character."
I have a 2020 Sierra HD AT4 3500 SRW Duramax built 1/29/20. It does not have active aero shutters in front of radiator - looks like it has the holes for each shutter, but no shutter. Didn't really think about it until watching a YouTube duramax channel with a grille off a 2020 and there were active aero shutters. I have no codes so I wonder if this was intentional from factory? Do others have (or not) these active aero shutters shutters on their 2020 L5Ps?
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