No F-bdy Bs

Worst factory HD wheels GM makes

Any 37 lin tire + wheels is adding a considerable ammt of unsprung weight, regardless of the height difference, so I stick to my mpg estimate. Also, front and rear gear swaps are probably pushing $3k after labor.

Diesel or gas? The 37s will obviously, drastically reduce mpg, but the gasser will take a bigger hit to mpg, and power. Rough guess, but I'd estimate at least a 2mpg hit on the diesel, and up to 4on the gasser. Maybe more. I wouldn't sweat a gear change on a duramax at all, and unlikely on the gasser either. You're obviously not concerned with acceleration or towing, and the 10spd will find itself in the right gear without much hunting, if any. If towing, mpg and acceleration are a concern, you're doing the wrong mods. Either leave it alone, or do the lift/tires and let the chips fall where they may.

I'd go right back to the dealer. If I didn't get satisfaction there, I'd go to a different one. If not there, I'd contact GM. It's under warranty. It's their issue to fix.

A lot of people also forget the old 6spd was pretty good at the torque converter snout wearing into the front of the trans case. Pretty common issue. 6spd was not a perfect trans by any means.

Yeah, some "tech" likely serviced it to the Duramax specs. Probably has the wrong oil in it as well.

I think you'll be happier with the 10spd. Real world issues are actually pretty rare dispite the hype Nate puts out.

I wish more tires were offered with raised, white lettering on one side.

That's honestly the first time I've heard of a 6.6 doing that.

Also, egg shaped crank journals, and flawed designs don't help

Got a feeling someone is confusing the 6.2 for the 6.6.

Basically all that. I THINK I may have checked it at some point after the 2nd change , but wouldn't swear to it.

That's not even remotely true. There's literally no cases of out of spec 6.6 gas blocks.

I was given 2 "free" oil changes from the dealer when I bought it. I had them do the first one at 2059 miles. They used Gm Dexos 5/30. I checked the dipstick a few time. Maybe burned half a qt, maybe. Had my 2nd done at the same dealer, same oil at 5,700ish. Didn't seem to use any at that time. I probably checked a few times. Got a "Engine oil low, add oil" warning at 6,500, this past Saturday. No oil showing on dipstick. I had not checked it prior given I'd ojly gone abt 750 miles since it was changed. I was literally next door to a different dealership. I didn't take it back to the original dealer because I didn't want to drive it with the dash code (I didn't know how low it was, and didn't want any "You shouldn't have driven it with low oil") and I didn't want to add oil so they could document how low it was. Dealer said it was 2.1qt low. They started the process. Determined there were no leaks (which I knew) Did an oil change. Took pics of dipstick, gave me some paperwork, and I have to bring it back in 1k miles. Hope it was a fluke. Hopemaybe the other dealer didn't put quite enough oil it in last change. I don't want to deal with getting a new engine in a truck with so few miles.

My 25' with just 6,900 on it has an oil consumption test underway as we speak.