2014 Silverado tuned or trash?

[Guy With A Chevy]

My friend has been driving this silverado around for about a year. He put some larger tires on it recently and started to experience a hard 2-3 shift and from what he remembers it didn't start doing that until after he had someone recalibrate the speedo. I can tell the misfire diagnostics have been tuned out which shouldn't have been done and dod disabled. Anyone have a stock 2014 5.3 silverado tune to compare to?

[04silverado6.0]

Looks like upshift TM is disabled. There is a lot of rough work in here including the spark table. Stock would probably have more power and much better trans life.

[Estep40511]

Im surprised his transmission lasted as long as it did.

[04silverado6.0]

Yep.

[Balakayt.]

Here is a stock 2014 Silverado crew cab z71 5.3

2014 SILVERADO STOCK TUNE - Copy - Copy (2).hpt

[Alvin]

After you turn TM back on it's going to shift real funny unless you clear all the shift adapts.

[Alvin]

After you turn TM back on it's going to shift real funny unless you clear all the shift adapts.

just a heads up.

[04silverado6.0]

Some people still believe a tire barking shift through a stock 6l80e means good tuning. Just because its cool dont mean its healthy. Now when you are putting down enough power to break traction on a shift with tm on you are getting somewhere.

[Guy With A Chevy]

I can only imagine what this does to hard parts Thank all of you for the info. Hopefully I will get the opportunity to fix it by returning most of it back to stock!

[Guy With A Chevy]

After you turn TM back on it's going to shift real funny unless you clear all the shift adapts.

just a heads up.

I assume you are referring to the Controls and special functions> Transmission > Automatic> Trans reset/preset function or also the Trans fast adapt/relearn?

[04silverado6.0]

I normally only do the reset/preset. Not sure what the fast adapt/learn is for but i have never seen anyone recommend it.

[RDF1]

Screw the shift timing up bad enough and it will break intermediate shaft.