2017 Silverado 5.3

This section of the forum is for discussion relating to the use of the T2 EX tuner/monitor on GM vehicles.

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Gaspud1975
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Joined: Thu Apr 25, 2019 9:01 pm

2017 Silverado 5.3

Post by Gaspud1975 »

Just got my t2 serial #201127453 and it’s telling me I have to purchase the ecm unlock? But other posts from mikel says they will send me one for free am I missing something?
GaSpud1975
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06MonteSS
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Re: 2017 Silverado 5.3

Post by 06MonteSS »

if you bought the Trinity T2 EX 9246 model, then the unlock is included...

If you bought the Trinity T2 EX 9245 model, then you have to buy the unlock...

2017/2018/2019 vehicles require a special unlock sequence... so what will happen is, when you go to install a tune the first time, the tool will give you a message that "one or more controllers can not be tuned - Contacting powertech for vehicle unlock... you will be notified within 1-2 days" - or something similar to that effect.. so then in 1-2 days (usually within an hour though) you should receive an email (if you registered your tool on diablo's site) that your update is ready.. or just run the updater again to update your tool in an hour or so - so then you'd run the Ignition Updater on the tool again, and it will update the tool with the unlock code for your ECM, and then you'd be able to tune the vehicle.
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Gaspud1975
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Re: 2017 Silverado 5.3

Post by Gaspud1975 »

I think they sent me the 9345 idk what’s going on. It’s got a vin but it ain’t mine and I just got this from amazon today.
pls tell me you can help
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Gaspud1975
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Re: 2017 Silverado 5.3

Post by Gaspud1975 »

ok got it to upload unlock and lost the firm shift and diablo tune but man I didn't feel any real difference. am I doing something wrong? do you have any custom settings advice that would make this worth the 600 bucks lol? just wanna get the most power and torque with the hardest shifts and quickest throttle response.
GaSpud1975
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