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Potential Tuner
T87A Unlock Question
I have a 2017 silverado 5.3 reg cab with the 6l80e transmission
Im In the process of converting it to the 8l90e transmission
I already have the complete harness off an 8spd truck and Tcm. My question is when I send it in to unlock ,they ask for the VIN ....confused of which VIN to use...my original off my truck(6l80) or the VIN off an 8spd file ? I know I’ll have to flash in a 8spd file on the ECM as well.
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Advanced Tuner
Open a ticket with their support service.
Login on the main hptuners.com website and on the top right you'll have a Contact link.
if Possible, I would give them both Vin #'s. just specify which which.
Vin # from the vehicle the TCM came from : xxxxxxxxx
Vin # of the vehicle it's going into : xxxxxx