Jump to content

7220 Predator Tuning

SRT8dan

By SRT8dan
in Modifications & Accessories

 Share

Recommended Posts

SRT8dan Enthusiast

SRT8dan

Posted
Posted

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 Senior Enthusiast

dieselfan1

Posted
Posted

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


Sent from my Pixel 3 using Tapatalk

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

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 Enthusiast

SRT8dan

Posted
  • Author
Posted

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 Enthusiast

Nitrousbird

Posted
Posted
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 Senior Enthusiast

CamGTP

Posted
Posted (edited)

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 by CamGTP

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Jworks
      HighMileage oils or stay with Dexos 1 ?

      By Jworks · Posted

      2011 GMC, 5.3, 183k miles. OK, ....I don't know, this may open a bucket of discussionworms. Ha. Here's the issue. I've been following GM's "mandate" to use Dexos 1 oil, 5w30 (Castrol). I'm thinking maybe I should consider a High Mileage oil due to 183k miles. Castrol and Mobil 1 both make HM but both do not display the Dexos 1 label. So....since I'm way past warranty does it hurt anything at all to change to the HM oil? Its not "Dexos 1" but I kinda doubt it will hurt a thing. I'd like some input especially if someone has done this. Thanks  
    • KARNUT
      Trading 7.3 (Godzilla) for G.M.C gas

      By KARNUT · Posted

      It is a company truck. Not under warranty. Both companies I’m involved with usually buy trucks that are discounted when looking. Except what the owners drive. Being retired and minority owner. I don’t drive a company truck. If they have the new GM gas engine it would be in a service truck. 
    • flattop
      2026 sierra bad brake controller

      By flattop · Posted

      Update!   Had the dealer look at the issue. First tech says no problem?? I said there was no voltage on the brake terminal on the 7 pin connector! He said he did not know what pin I was talking about. So they bring out a seasoned tech and I explain to him. He attaches a VOM and has me push the brake, and sees no voltage!!    Tom, the seasoned guy says lets go back to my service bay and look closer. We discover thru his on line system that the controller is a "smart controller" as it needs to detect a trailer connected before the brake voltage is allowed to the 7 pin connector!!! He also showed me a GM bulletin stating some trailers with LED lights have such low resistance the controller wont recognize them!!! I was thinking WTF, but thanked him for bringing me back into the service bay and explaining this all to me. He also plugged in a trailer simulator and it showed the brake controller was indeed working.   After my dealership visit I hooked up to an older camper with standard 1157 lights and the truck did connect and the electric brakes worked great!    Not to sure what I have to do with the equipment trailer with LED lights, I cant tow it with no brakes.   Why did something so simple for many years have to get so complicated!        
    • Chuck FB
      Trading 7.3 (Godzilla) for G.M.C gas

      By Chuck FB · Posted

      Do find out as that would be interesting if they have been using any L8T engines or for that matter have been running any of the Ford gas 7.3 to see how they have been panning out.    I assume your nephews engine replacement was on his dime as the regular warranty would have long past unless he had some form of extended warranty that covered such events. That shows though and may depend on the year of the build that failures are occurring with the valve train well beyond the warranty distance and more than likely so will others have that sneak up on them.  
    • Chuck FB
      Trading 7.3 (Godzilla) for G.M.C gas

      By Chuck FB · Posted

      I realize this is an old post and its probably been talked about since then on this forum and I may have mentioned it myself but the Chev multi flex tailgate on the HD trucks are all aluminum so there is that one item that I am aware of on a current GM HD truck that is aluminum but if its the standard tailgate then its still a steel unit as far as I am aware to current 2026 model year.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...