In order to tune a 2017 GMC Sierra with 8 speed transmission:
*TCM will need to be sent in to be unlocked for $200
*Purchase 4 credits to tune TCM $200
*Unlock ECM via internet connection $0
*Purchase 4 credits to tune ECM $200
Total $600
Is this correct or do the same 4 credits apply to the ECM and TCM?
You are correct
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
Ok Thank you
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