Performance programmer for 2018 Silverado

dean laginess · November 12, 2020

I have a 2018 Silverado 5.3 that I'm considering getting a performance programmer for. I've never used one before and wanted to know if a dealer tech would notice any programming changes to the computer even after restoring factory settings prior to taking it to the dealer for any service. Any info would be greatly appreciated.

CamGTP · November 12, 2020

Yes, they would notice it if they had a reason to look for it. Like a warranty claim type thing. Any time the computer is flashed there will be a date stamp in the memory of that happening.

UnlimitedMatt · November 12, 2020

12 hours ago, dean laginess said:

I have a 2018 Silverado 5.3 that I'm considering getting a performance programmer for. I've never used one before and wanted to know if a dealer tech would notice any programming changes to the computer even after restoring factory settings prior to taking it to the dealer for any service. Any info would be greatly appreciated.

I am using Trifecta's Elite tune and have had it installed since my 2018 only had 1000 miles on it. My truck has only been to the dealership twice for it's first 2 old changes, and nothing was said about my tune. It is only a 20 minute process to reinstall the factory tune.

I thought Trifecta used to advertise that their tune was undetectable when you uninstall it, but I no longer see that on their website. I do recall seeing something about that when I installed my most current tune, during the install setup, but I don't remember for sure.

I did have the Trifecta Elite tune on my 2015 Canyon and the dealership never said anything about it. They were more focused on my Catch Can saying that voids my warranty.

SILVER SLED · November 12, 2020

12 hours ago, dean laginess said:

I have a 2018 Silverado 5.3 that I'm considering getting a performance programmer for. I've never used one before and wanted to know if a dealer tech would notice any programming changes to the computer even after restoring factory settings prior to taking it to the dealer for any service. Any info would be greatly appreciated.

I have a Diablosport Intune 3 that I just took off my 18 Silverado. I'll sell it for $200, could meat you in Hillsdale and show you how to use it.

dieselfan1 · November 12, 2020

Why do you want to?
Need more powwa?
Tire size correction?
What's your budget?
Just asking because it matters which direction to go.
Usually you get what you pay for, right Cam?

Sent from my Pixel 3 using Tapatalk

SILVER SLED · November 12, 2020

I wanted it mostly to get rid of the 98 mph top speed governor.

CamGTP · November 13, 2020

11 hours ago, UnlimitedMatt said:

I am using Trifecta's Elite tune and have had it installed since my 2018 only had 1000 miles on it. My truck has only been to the dealership twice for it's first 2 old changes, and nothing was said about my tune. It is only a 20 minute process to reinstall the factory tune.

I thought Trifecta used to advertise that their tune was undetectable when you uninstall it, but I no longer see that on their website. I do recall seeing something about that when I installed my most current tune, during the install setup, but I don't remember for sure.

I did have the Trifecta Elite tune on my 2015 Canyon and the dealership never said anything about it. They were more focused on my Catch Can saying that voids my warranty.

The reason they didn't say anything is because it wasn't for warranty work. Only a warranty job that is powertrain related would need them to look at the calibration and from there they could deny the claim because it was tampered with. It's a can of worms sometimes with what requires the dealership to look for that stuff but if you want to be cautious, don't tune it until 5 years or 60,000 miles.

Edited November 13, 2020 by CamGTP

UnlimitedMatt · November 13, 2020

11 hours ago, CamGTP said:

The reason they didn't say anything is because it wasn't for warranty work. Only a warranty job that is powertrain related would need them to look at the calibration and from there they could deny the claim because it was tampered with. It's a can of worms sometimes with what requires the dealership to look for that stuff but if you want to be cautious, don't tune it until 5 years or 60,000 miles.

That makes sense, thanks!

flyingfool · November 13, 2020

20 hours ago, SILVER SLED said:

I wanted it mostly to get rid of the 98 mph top speed governor.

is the drive shaft designed to go beyond that? when it lets go you'll need a new fuel tank, floor board, and maybe the lower side of the bed will all get whiped by the shaft when/if it fails

SILVER SLED · November 13, 2020

1 hour ago, flyingfool said:

is the drive shaft designed to go beyond that? when it lets go you'll need a new fuel tank, floor board, and maybe the lower side of the bed will all get whiped by the shaft when/if it fails

Don't really know, it held up plenty of times over 98mph though.