Any 2015+ 5.0 Issues?
Senior User
Joined: Jun 2016
Posts: 166
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Are you past the 2-3K mile mark that they suggest not basing your mpg calculations on? Some sources I've seen suggest mileage doesn't settle fully until around 5K. Just a thought
Posting Guru
Joined: Jun 2012
Posts: 1,306
Likes: 32
Not yet, but now that you mention it, I just passed the 2k barrier and have noticed the gas mileage improve from roughly 18 to 20.5. My old truck started out at 20, I eventually got 27 mpg out of it. I'll wait until the engine is broken in. Thanks for the input!
More Turbo
Joined: Jul 2005
Posts: 592
Likes: 38
From: Groton, MA
I have a '15 with 17.5k mi on it and it hasn't skipped a beat. Runs and sounds great.
I left one of the trip odometers untouched since my first oil change at 3k mi and it shows 21.4 mpg which is what I typically get over a tankful. I range from 22-23 highway to 18-20 around town and usually drive about 50/50 of each.
I left one of the trip odometers untouched since my first oil change at 3k mi and it shows 21.4 mpg which is what I typically get over a tankful. I range from 22-23 highway to 18-20 around town and usually drive about 50/50 of each.
Posting Guru
Joined: Jun 2012
Posts: 1,306
Likes: 32
Manual. Don't want it going on when I least expect it. Don't think there's automatic locking axles though.
Posting Guru
Joined: Jun 2012
Posts: 1,306
Likes: 32
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Senior User
Joined: Jun 2016
Posts: 166
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Chevy uses an auto-locker. Watching its engagement on off road courses, I would think it would lead to some interesting handling characteristics on the road since it's such a sudden engagement.
I can't imagine it would be advisable to go that fast in 4Lo! I would expect some serious heat in the transfer case. My Jeep's manual said not to exceed 25mph in 4LO.
I can't imagine it would be advisable to go that fast in 4Lo! I would expect some serious heat in the transfer case. My Jeep's manual said not to exceed 25mph in 4LO.
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Ok, thanks. I Assume you can turn it on in just 2wd as well, or does it have to be in 4wd?
Senior User
Joined: Sep 2016
Posts: 341
Likes: 2
Chevy uses an auto-locker. Watching its engagement on off road courses, I would think it would lead to some interesting handling characteristics on the road since it's such a sudden engagement.
I can't imagine it would be advisable to go that fast in 4Lo! I would expect some serious heat in the transfer case. My Jeep's manual said not to exceed 25mph in 4LO.
I can't imagine it would be advisable to go that fast in 4Lo! I would expect some serious heat in the transfer case. My Jeep's manual said not to exceed 25mph in 4LO.
Correct, if a Sierra or Silverado has the G80 code, it has an Eaton M-locker, which is an auto-locker. It works fairly well, but it can certainly make it easy to spin out on an icy road, for an poor driver. I'd much rather have the E-locker, but the M-locker is still better than having an open diff.
Elder User
Joined: Feb 2004
Posts: 839
Likes: 0
From: outback
Everyone seems to come to the conclusion that the 5.5 bed is a useless idea, yet it seems 90% of trucks these days have the 5.5. I would think in 10 years they would be only making 6.5 plus, but I guess every generation has to make the same mistakes as the previous one.