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Everything posted by Agriont

  1. My 2017 Denali has the same issue. Feels like the seat moves sideways a little. I thought the bolts had fallen out of the mounts but the seat is secure.
  2. I've had the transmission flushed, the valve replacement and the TC replaced. Didn't fix the problem and am now considering a transmission replacement.
  3. I have a 6.2l. Requires premium gas. I tow 5k lb trailer for recreation, winter driving. On the route I travel, nearly 1K miles of it is regular unleaded at the pump. It is very rural. No freeways, no exits, no fringe. This means I have to carry a lot of gas cans or risk damage to the 6.2. 26 gallon tank is pathetically inadequate imo. Bed tanks aren't legal for gas as far as I know, although I cannot see how five or more jerry cans of gas in the bed is somehow safer.
  4. I received this info from an a guy who is doing significant testing with his 3.0 and is going to do the same with a 6.2 he has. I quote... "I am currently working on a video towing showing the MPG rating at 70mph and 65mph towing a 7x16x7.5' tall enclosed trailer with my truck. Next week I'll be doing the same loop with a 6.2l gas Tahoe to do a comparison. The trailer weight was 4380lbs and as a preview, 13.1mpg was achieved at 70mph and 15.6mpg was at 65mph. Using some simple math I would expect that 60mph would get you around 17.5mpg. I typically tow till about 25% of the tank is remaining and put in about 17 gallons of fuel. This give the truck a fueling range, at 60mph, of about 300 miles or 5hrs of running. In my opinion that is plenty for the balder and stomach to take too.... Those are my expectations for the 3.0 and in a week or two I should have an answer on the 6.2l Gas motor. I'm only going to do one run at 65mph with the trailer but I'm expecting to get around 12mpg."
  5. Nice. Z71? I wish the Denali came with that set up, a longer box, greater fuel capacity and max tow with the cameras.
  6. That is very light.. my trailer empty weighs that. Loaded with my kit, it weighs close to 4.5 to 5k lbs. I also do most of my towing during winter months so it does impact milage.
  7. That is good milage. I have a 7.5 x 14 tandem enclosed trailer. Very high V nose.. aluminum trailer. What was the towing weight of your trailer and the payload in your truck?
  8. 30-40% is significant... especially if towing. I'm not so concerned when I'm not towing because the 6.2 is quite frugal under my foot empty. I'm looking at distance between fill ups. I'd like to know real world towing expectations from the 3L per tank towing 5k lbs.
  9. Just telling you my experience. Rural, small town gas stations don't have 91 on pump in my area.
  10. I jumped from a 2010 5.3 to 6.2. The 6.2 is more fuel efficient. The only concern I have with it is the availability of premium fuel on some of my recreation routes. Mostly 87 octane, regular unleaded is all available at gas stations. I'm wondering if something like Lucas octane boost would be me 4 points with a 15oz bottle per 25 gallon fill up. It is that or carry a lot of gas cans. I had a bigger capacity tank in my older GM as well, which I prefer.
  11. That is pretty good. How heavy is your trailer and what amount of weight do you carry in it and the truck when you tow? What is the milage on hills? Mine with 5,500lbs of trailer (tandem 14' with 4' V, 86h x 7.5w) and kit is about runs about 16 - lower when towing... down to 7 MPG on hills at times. I can see the needle drop as it drinks gas.
  12. I'm was surprised by it too, coming from a 5.3L SLT Z71. The 6.2l shifts between four and eight cylinders, I don't even notice when it does.
  13. No. Stock. 350 mile run highway. It cruises at low rpm. I said I've gotten 23-24 highway.
  14. 70-75 mph, highway average. It does well around town too.
  15. I've experienced 23-25 MPG not towing. I really dislike the gas tank size in my Denali. It is a limiter for my purpose, especially when fuel use drops to 8 MPG on hills. I need more range, more capacity without the need to jerrycan gas. It is a pita. I have the magneride suspension. I use to have a Z71, and miss it for payload and towing. I wish GM had the option of Z71 on a half ton Denali. I'd also like a full size bed, 8ft but don't see that happening.
  16. Not worth the trade for certain but I am curious to how the 3.0l tows and to real life fuel economy. I think my truck has the same towing rating. The 6.2l is not a slouch and yes, it is fast. Fuel economy is exceptional when not towing.
  17. My issue with my current truck is the gas tank size, the 6.2 does well for the most part but when doing 6k clicks on one trip over a two week period, stopping to fill up is a pita when there aren't many gas stations where I travel for recreation. It means I have to carry a lot of gas cans. My truck has the Magneride shocks.
  18. I have a 2017 with the 6.2. I do tow a tandem 19' enclosed trailer with it, not every day but enough to feel the sting of the reduced fuel economy. I'd like to know what anyone with the 3.0 are experiencing when towing in terms of handling and fuel economy.
  19. I'm not a mechanic but obviously the truck has problems and the valve body showed in code apparently. I've heard from other truck owners who've had it done in their vehicles. I've read that the valve body cover design is an issue, thus the replacement. A friend of mine has a 2019 GM 5.3 w/8sp. His truck is as bad as mine, but also has much more milage. His dealership told him there was nothing wrong. I suggested he go to another dealer.
  20. My dealer is well aware of the problem with the 8sp. I too hope it resolves the problem and not damage has been done elsewhere. I have low milage on my truck and I hope this TC replacement last well beyond 40k miles. I'm leery of it at the moment and hate the idea of having all of the guts of the vehicle being torn apart and then put back together.
  21. 2017, 6.2 8sp.. replacing the TC this week. Tried the first steps, several attempts to relearn but tech said the shifts are still way out of place. I hope it does the trick.. if not, I'm done with it.
  22. I've had my Denali 6.2l 4WD for a couple of years and have put nearly 30k miles on the ODO. I jumped to it from a 2010 Sierra SLT Z71, which was a great truck. The issue with this Denali for me is the limitation of Magneride. My truck has tongue rating of 500lbs. I tow a small toyhauler, several sleds with all of the gear, extra gas etc. I also have small tractor and 20' flatbed leftover from my SLT days. I go on snowmobile trips every winter, towing trailer sled nearly 2000 miles each way, a three day trek, two lane. Pretty isolated, so need to take with me everything I need in case I happen to get stuck along the way. The route is sketchy at the best of times. Ice roads etc. The 3500 is overkill for what I need, but it is new, has the 6.6l diesel, LTZ and Plus package, sensors, heated steering, heated/cooled leather seats etc. No lane assist though, it isn't something I use in my Denali. Other than that, it is a crew cab like the Denali, is a Z71 and currently it is selling at a significant rebate. I've been looking for a while (still not certain though) for something that would handle more payload, handle the towing, and not limit my truck life otherwise... getting to my camp etc with all of the kit I have. I currently feel like I'm driving a car in a truck skin with the Denali. I may have made a mistake giving up my SLT but the 5.3 was too light for a long haul. Love the 6.2l though. I hope this is the appropriate placing for this topic. Thoughts appreciated.
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