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2015 High Miler's Achievements

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OLD thread but was hoping to find someone in DFW-Austin, Texas area or in between that has done this. I have a set that has been previously modified and I need to open them and make some corrections. I don't think I have the patience to not eff them up in an oven... LOL How hot is the light when getting out of the oven? How are you handling them? switchbacks.zip
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My truck has had this issue for quite some time but seems to be getting worse. It does have 230,000 miles so it may be just time to replace the vacuum pump. What happens is at a drive through speed or waiting in line at a drive through car wash , the brakes will get a very hard peddle and you really have to push VERY hard or you will not stop rolling. I have found that if I put in neutral and give it a light throttle, it will bring the peddle back for a few more stops before having to do it again. What is involved in this repair? I tried a search but I was not getting any good returns. Thanks in advance
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Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
Cam, thanks for this info but TBH, I have not become very proficient yet with HPT and looking at these tunes. I've had some trouble getting my compare files to open. Most likely user error. Ill try again with this one. I def would like to be able to switch fuels. I could at one point but now its really down on power with 87 and with 91/93 its about where it used to be with 87. I drive a lot of highway miles back and forth to work and with fuel prices where they are, being able to run 87 for the long hauls would be great. With that, I am willing to run it on 91 if it makes the type of power that I think it should. it just feels really weak off the line and at one point when first tuned, it would really get it off the line. I recently pulled a two wheel trailer to DFW and back and it was horrible on power and mileage and was always in 5th gear it seems. That was with an empty load. -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
This is posted earlier in the thread: Builder said it’s built to handle 700 HP. More if it had a hardened input shaft. -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
Here is the current tune 2015 Sierra 5.3 tune 4-12-22 33 Terra Grapplers Retune 33.25 and speedo adjustment.hpt -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
A lot, actually. Ill post it in a few but send you a PM with my issues. -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
small update. New trans is doing well. I did get an updated tune to reflect the new components and its still working well. The temps are where I would expect with the cooler and the bypass. Highest I've seen is 140 in heavy city traffic. I do need to get a better tune though, both engine and trans. I have HP Tuners but I'm not very good at it yet. If anyone is in the DFW area that has some experience, Id be happy to meet up and get a look at my tune. -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
For the tune that’s on the truck now, it was no different. Crispier but not really harder. Tune was already pretty good on the shifts. He warned me that it would be considerably firmer but it’s good in my opinion. -
Second 6l80 trans died today
2015 High Miler replied to 2015 High Miler's topic in 2014-2019 Engine, Driveline, & Exhaust
McCoys in Garland. $4200 out the door and replaced the rear main that was leaking as well. I never noticed it but was told by a couple of techs that it was leaking. Took 4 days. Very satisfied at this point.
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