2021 GMC unlock issues

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Lunaf900
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2021 GMC unlock issues

Post by Lunaf900 »

When trying to install my tune I’m getting these messages. Tried updating the tuner as well and says it is updated. This was just purchased new from a vender that drop ships them from Holley. Followed the setup steps as well.
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

this should be resolved now, please update the device and try again.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
Lunaf900
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Joined: Sat Oct 18, 2025 10:11 pm
Location: Nj

Re: 2021 GMC unlock issues

Post by Lunaf900 »

mikel wrote: Mon Oct 20, 2025 4:58 pm this should be resolved now, please update the device and try again.
This is what I am getting now. Using a brand new Mac. At this point I’m almost ready to just return this product. As the hours to call and talk with someone is during my work hours.
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Lunaf900
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Re: 2021 GMC unlock issues

Post by Lunaf900 »

As well as this.
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

did you not already have an account for the update agent software?
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

i think i see the issue. the first name when you created the account is STefn, there is no a, so try it misspelled like that.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
Lunaf900
Posts: 10
Joined: Sat Oct 18, 2025 10:11 pm
Location: Nj

Re: 2021 GMC unlock issues

Post by Lunaf900 »

mikel wrote: Tue Oct 21, 2025 11:08 am i think i see the issue. the first name when you created the account is STefn, there is no a, so try it misspelled like that.
Well if that works I’ll feel dumb. And then if it doesn’t work I’ll still feel dumb bc then more then likely I fat fingered more of the info 🤦‍♂️
And my verdict is “the operation has timed out” device error.
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

any chance you can give us a call so we can go through this with you?

561-908-0040
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
Lunaf900
Posts: 10
Joined: Sat Oct 18, 2025 10:11 pm
Location: Nj

Re: 2021 GMC unlock issues

Post by Lunaf900 »

mikel wrote: Wed Oct 22, 2025 9:28 am any chance you can give us a call so we can go through this with you?

561-908-0040
I can possibly next week as I am in class all week and I do not get off of work in time to call.
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

OK, I have asked our support team to look into this.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
Lunaf900
Posts: 10
Joined: Sat Oct 18, 2025 10:11 pm
Location: Nj

Re: 2021 GMC unlock issues

Post by Lunaf900 »

mikel wrote: Thu Oct 23, 2025 9:00 am OK, I have asked our support team to look into this.
Good news got it to tune. Now to play around with the settings and get it dialed in.
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mikel
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Re: 2021 GMC unlock issues

Post by mikel »

great, enjoy.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
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