Getting a cam installed and my local shop says I MUST send the ECM off to be unlocked? Says it has to physically be opened up for some reason...
Anyone else heard of this?
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Getting a cam installed and my local shop says I MUST send the ECM off to be unlocked? Says it has to physically be opened up for some reason...
Anyone else heard of this?
Yes, most late model GM/Dodge ecm's need an unlock, perfectly normal.
What specific vehicle are you working with?
Sorry... 2018 Tahoe Premier RST
Attachment 145001
a PHYSICAL "send the ecm off in the mail" unlock though?? How does this situation differ vs buying credits and unlocking like I did with my P59 from a 2006 LQ4?
Sending the computer in is not required on a 2018 Tahoe, you can buy 4 credits and tuning it like you would anything else. Just need to be connected to the internet the first time you read the file.
The TCM on the 8 speed is a different story, that requires an unlock service if you wish to tune the TCM.
Yup. ECM doesn't need to be sent off, tcm does.
You can read more about the T87A tcm service here https://www.hptuners.com/product/gm-t87a-tcm-services/
Awesome guys, thanks so much for the clarification!!