Wheels and tires causing a few problems

[Snowcamo]

yes, search trans thermostat removal, on youtube. its very easy to do!!!!
OEM temps on tranny is like 185-210 degrees on the highway..after deleting you with see it drop to 120-140 degrees, less heat improves the life of the clutch packs and the TCC lock up will last longer.

Ah Less heat. I've alwaysheard from trans builders 175°F is where the most function best.

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[flyingfool]

13 minutes ago, MarcuM said:

I meant 33s getting 4-5mpg better 

if I’m getting what I’m getting with a 32” tire what will be the end result with 35s then?

if it stays the same I’ll be perfectly content but I can’t see that happening and there’s a ton of 35s on this site with the same or a touch better then my mpg 

i wouldn't put 35" tires on unless you have 3.75 or 4.10 gears,  then re calibrate the entire transmission shift mapping in the computer for corrected shift points and firmness, and  TCC  engagement points in the torque converter

[MarcuM]

2 minutes ago, flyingfool said:

i wouldn't put 35" tires on unless you have 3.75 or 4.10 gears,  then re calibrate the entire transmission shift mapping in the computer for corrected shift points and firmness, and  TCC  engagement points in the torque converter

I have a tuner but when I change the shift points and Tcc stuff it gets worse really 

I bumped all gears up 500rpm and on highway @70 mph it would constantly stay in 5th or jump back and forth from 5th 6th 

i honestly can’t tell anything on the tcc setting I have sport ,economy and stock 

only difference I have found is firmness and dod off that made a improvement so far and I’m running a 93octsne only fuel tune that didn’t net any mpg change 

[flyingfool]

you need a dedicated laptop software to tune the trans, something like HPtuners or EFI live, hand held tuning is for suckers. you want the real deal editing software

[MarcuM]

6 minutes ago, flyingfool said:

you need a dedicated laptop software to tune the trans, something like HPtuners or EFI live, hand held tuning is for suckers. you want the real deal editing software

I’d just take it back to stock before I’d go that far 

Over some looks lol

truck has 130k on it already and 4,500hrs but it’s been 96% highway miles to work so I’m not going to get too crazy I’ll be lucky if I just replace the trans before I pay it off 

[MarcuM]

I think after a day of changing tune after tune I’ve figured out some of my problem 

looks like I need a new converter afterall 

 

few months back it was shuddering like a manual trans trying to stall when I lugged the truck from rolling stops like train track crossing etc etc and I did pan drop filter change and flushed few quarts of oil through it like the bulletin says and the shudder went away and it seemed to clear up.

Well today I set the tcc slip to sport on the tuner and the truck was a huge difference power wise and responsive but the rpm hand was jumping up and down like the converter was trying to slip but couldn’t so I guess the past few weeks it’s been staying locked out more then slipping and causing me to keep my foot in it more 

 

I’ll do the converter change myself but would there be any gains on a daily truck by going to a 1200-1500 stall or anything ??

whats a good converter to try ?

 

thanks all for the help !!!!!

 

[Wiggums]

I wouldn't have thought the rear axle can be a factor, isn't that what the gears in the automatic transmission is for?

 

I am very reluctant to change anything on my 2019, after all, I'm sure the folks at Chevy did their homework carefully. I added the shell on my F-150 and watched gas mileage drop from 20 mpg to 17 mpg. I had bigger tires on my Isuzu Trooper years ago and it really wrecked the gas mileage for me.

 

This time, no shell, no bigger tires, I am getting 28 mpg but I'm also a dedicated hypermiler.