7220 Predator Tuning

[SRT8dan]

I have a 2018 Silverado 1500 High Country with the 6.2 engine.  Recently purchased a DiabloSports Predator 2 tuner, which to my dismay, does not have anything for the 8L90 transmission.  Does anyone know why?

[dieselfan1]

As far as I know there is no tuning available for the eight speed.


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[CamGTP]

The TCM's are "locked" and none of the handheld tuners can do anything with them.

 

HP Tuners is the only way to tune the 8 speeds on 2017-2018 trucks. You'd have to send in your TCM to HP Tuners, pay the unlock fee and then pay the fee to license that TCM with HP Tuners. To fully tune a truck like yours would cost about $900 I believe. HP Tuners is $300, plus $200 for the PCM unlock, plus $~200 for the TCM unlock and $200 more for the TCM license. Then you have to learn how to tune it youself and your truck will be down for a few a week with the TCM unlock service.

[SRT8dan]

Thanks CamGTP.  For that kind of money, I am beginning to believe the trans shifts just fine the way it is.  I wasn't thrilled the way Diablo Sports sells the Predator Tuner.  They never mention the additional $40 for the GM unlock feature nor do they say anything about the inability to do anything with the transmission.

[Nitrousbird]

On 12/26/2020 at 1:32 PM, CamGTP said:

The TCM's are "locked" and none of the handheld tuners can do anything with them.

 

HP Tuners is the only way to tune the 8 speeds on 2017-2018 trucks. You'd have to send in your TCM to HP Tuners, pay the unlock fee and then pay the fee to license that TCM with HP Tuners. To fully tune a truck like yours would cost about $900 I believe. HP Tuners is $300, plus $200 for the PCM unlock, plus $~200 for the TCM unlock and $200 more for the TCM license. Then you have to learn how to tune it youself and your truck will be down for a few a week with the TCM unlock service.

Truck won't be down a few weeks.  1-3 business days if you send them yours + shipping, which is $199.  Or send them another TCM and they will program it for you for $299 then you just swap TCM's and have zero down time.
 

It would be $900 all in, plus $250 if you go with the Pro Feature set (useful for adding wideband logging).  
 

In 2 years when my warranty is up, I'll be doing this on my truck for E85 tuning and a little other stuff.  Currently buying it + wideband for my car now to retune the hack job a "pro" tuner did on the car by the previous owner.

[CamGTP]

They sell a AEM can-bus wideband, I use one. Saves you $250 so you don't need the wideband plus the pro feature set.

Edited January 1, 2021 by CamGTP