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Carolina

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    2020 2500HD LTZ 6.6 L8T

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Enthusiast (3/11)

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  1. I just went up to a 2022 2500hd from my 2020 so I can’t look at it to answer my own question as I’m noticing this a week later but the back side of the hood doesn’t have the black paint on it . It looks like primer clear coated . After inspecting the bed I see the same thing in the post holes and around the metal overlaps . Under the truck looks like straight primer and the white joint sealer is completely exposed. Seems the truck was rushed out . Does anyone else notice this on there’s ?
  2. I mean really who comes up with this crap to remove the full tubes off the transmission. The manual says generally transmissions don’t need to have fluid added so it was removed. Crap happens and it would nice to be able to add freaking fluid to get you home or somewhere
  3. Driving too slow… my first 7% grade pull I tried running 65 and it dropped to 59 then caught a low gear to speed back up . Next time I hit it a 75 and it didn’t budge . I did climbs up to 80 . Fuel mileage dropped .5 mpg running 75 so no biggy. Same grade same trailer on my lmm was maxed out at 58 mph . My largest load is 17,468# . It does it comfortably at 75 mph
  4. For what it’s worth I use to haul 14 bails of hay (12k) on a 3500# equipment trailer with a 1979 k10 that was rated at 6500# towing capacity with 388 stroker , no electric brakes . Straight bumper pull , didn’t even have a hitch . I think the bumper was rated for 5000-6000#. I rarely went over 55mph . It would drag the crap out of it. The 90’s were different
  5. The 6.6 gas is NOT the 6.0 . The 6.0 would pull what you have but the 6.6 won’t care it’s behind it . A lot of people are still thinking gas is gas from 15 years ago . I have an 09 LMM with a 60hp tow tune and my 2020 6.6 gas is more capable , just is . It pulls like the Gm diesels from 5 years ago. Unloaded it’s a very spunky truck also . It makes the biggest heaviest HD truck GM ever made feel like a hopped up 1/2 ton. The L5P is also not the diesel from 15 years ago it feels like a monster under the hood but the front of the truck is noticeably heavier if you jump from one to the other . I go off-road a lot which is a big draw back to the diesel . My LMM will sink in the mud in the blink of an eye and honestly it annoys me after driving it a while with all the knocking sounds . I never want to cut it off if I’m not staying somewhere long . I towed a 04 ext cab z71 on equipment trailer got 12.8 mpg with the 2020 last week . It really felt very light behind my 2020 . I have pulled a 36’ travel trailer about 7000 miles with it mostly in the mountains and it was very impressive power, mileage not far off from my lmm . 14k of heavy equipment easy. My friends 2020 l5p dually just averaged 13.8 mpg empty with a bed cover on a 600 mile trip all interstate . I’m constantly over 17 on interstate unless I’m running 80 then it’s mid 16. If you gonna sell it in a couple years the diesel would be one less thing the car dealer would have to complain about but they’ll come up with some reason why it’s worth 10k less than you think . If you were buying it to keep it 15-20 years I’d definitely go with gas because of the maintenance and repair cost of the diesel . As much as trucks cost now though you better off to sell in 5-6 years . I got the Ltz loaded with everything but sunroof and I don’t know how I’ll ever go back. All the bs about the diesel holding its value can be misleading. The upgrade cost Is 10k in 3 years that upgrade is worth 6k so it looses 4K more . Most diesel trucks are loaded to the rim so they have a higher package that cost more than most gas trucks which are wt or lt. Don’t believe me look at nada values from a few years back. The only difference if you have same package is 6k for diesel. An Ltz gas will be worth similar to a lt diesel there just haven’t been that many of them until lately but that’s changing rapidly. If you were towing a 40ft fifth wheel toy hauler you’d have to get the diesel 3500 to handle the pin weight and gcvwr . In the 2500 class the gas will pull anything you will load behind one
  6. I bought what I think were slt wheels from someone from marketplace . Was missing one cap and I ordered pt#22909149 to replace them with Chevrolet caps . They look identical to the gmc 22910735 but are a little wider and maybe shorter . I trimmed it with a side grinder and got it to fit but keeping the cut the same was a challenge. I’m sure I could do better with a dremle or bandsaw . Before I hack the other 3 does anyone know a part number that would fit without mods. Attached pictures . They look way better with the bow tie .
  7. I currently own a 2020 6.6 , 2018 6.0 , 2009 Duramax and 2008 6.0 . The 2020 on factory 34”+ tires has the best fuel mileage non towing, the fastest, holds higher speeds on 7 % grades with the same trailer. The 09 is best towing mpg by 1 mpg , shifts the least in tow haul mode although the 2020 in man 5 ( same top gear as 09 in tow/haul) isn’t very far behind. 09 is the most comfortable to drive towing with cruise on in hills . 2018 moves loads from dead stop with the least amount of throttle, has much smaller tires 245’s is second with mpg non towing. The l5p 2020 will win them all over but the 6.6 gas is better than my 09 in my opinion
  8. They’d have to put 4:10 or lower in it with the 10 speed or it would hardly ever make it to 10th with the bigger tire combos. Rpms are low in 6th with the 3:73 . Probably could go up to 4:56 but that would have to high of a tow rating for someone to pick the diesel in a 2500 . The 6.6 gas got the power to do some serious towing with the 10 speed and lower gearing just don’t have the engine brake to stop it
  9. Just keep your half ton . If you’re that concerned with mileage you won’t be happy with any 3/4 on the market.
  10. Are you sure you’re truck didn’t get flooded??
  11. Lol . Here is my trip average, forgot to post it .
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