01-09-2020, 07:59 AM | #1 |
Drives: 17 camaro ss Join Date: Mar 2018
Location: michigan
Posts: 238
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2017+ TCM unlocking question
I'm just wondering if anyone here has any idea what is changed by HPTuners when they unlock a TCM. I don't need to know how to change it just what is changed.
So my question is does anyone here know what is changed or has anyone looked for a difference between a locked an unlocked TCM. And could you tell me what it is. |
01-09-2020, 08:28 AM | #2 |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
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Nothing is changed except for the ability to tune it. When it's locked you can not tune it with HP tuners or any other tuning program. Once you send it in HP will unlock it so you can make changes with HP tuners. It's kind of like taking the firewall down so you can get in it.
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01-09-2020, 10:38 AM | #3 |
Drives: 17 camaro ss Join Date: Mar 2018
Location: michigan
Posts: 238
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Yes and that is what I'm asking about. I can get in and change anything I want in the TCM so I'm wondering if anyone knows what to change to unlock it? Because if you go in and come back out its still locked.
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01-20-2020, 11:54 AM | #4 | |
Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
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Quote:
No one other than the HP Tuners engineers know what they had to do in order to break the new GM security encryption. With that no one if going to be able to tell you nor do I think HPT would tell you as they would prefer the automakers not know what they did to break the encryption so the next level of encryption doesnt become hard to break.
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01-20-2020, 02:49 PM | #5 |
Drives: 2017 50th Camaro SS Join Date: Jul 2016
Location: Maryland
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How are you "getting in" without it being unlocked?
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01-24-2020, 07:02 AM | #6 |
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Maybe it was already unlocked/tuned... or never locked...
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01-28-2020, 11:14 AM | #7 |
Drives: 17 camaro ss Join Date: Mar 2018
Location: michigan
Posts: 238
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Thanks for the help. We figured it out, just had to delete one parameter.
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02-07-2020, 10:10 PM | #8 |
Drives: 2018 Camaro 2SS A8 Join Date: Dec 2019
Location: Windsor, Ontario, Canada
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Care to share with the rest of the class? =P
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02-07-2020, 10:20 PM | #9 |
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Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“ |
02-12-2020, 11:51 AM | #10 |
Drives: 17 camaro ss Join Date: Mar 2018
Location: michigan
Posts: 238
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My friend has access to GM programming software and wiring to connect to it. It very easy to unlock the computer, but it locks again after set number of key cycles which will be annoying while tuning it, so he had figure out how to keep it unlocked which was the hard part, and I have no idea what he deleted to keep it unlocked.
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02-15-2020, 10:13 AM | #11 | |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
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Quote:
I would like to know how they are doing it as well. |
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02-15-2020, 01:14 PM | #12 | |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
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Quote:
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02-15-2020, 08:01 PM | #13 |
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Given the A8 issues and the zeroing out slip% tables fix tuners found out, GM is probably just staying mum on the whole thing for now.
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02-16-2020, 10:29 PM | #14 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
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If it wasn't for the government, the EPA, liability, and lawyers I think GM would completely open everything up.
I think GM wants the customer to be able to do most things, minus stuff like air bags and other things to minimize liability. They know a lot of the sales come from people who want to make them better and faster. The EPA has required "security" ever since ODB2 in 1996 so this is not new and it has always been "illegal" to modify your vehicle and drive it on roads that we tax payers pay for. The manufactures then had to implement this security but it is easy to get around. I think GM is doing just enough to satisfy the government and EPA and maybe in some cases intentionally not fixing backdoors in the system. However, unfortunately this whole situation is changing. With the do gooders pushing this driverless car fantasy we will now see a complete lockdown of all systems. There won't be any more backdoors. If this fantasy happens (which I actually don't think, at least in my lifetime, we will see a true, the way everyone thinks of, driverless car) GM wants to be sure they don't open themselves up to liability. |
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