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Its a 2002 GMC Sierra.
Not sure Ill have to check when I get home.
V1 hardware.



So it doesn't matter if the vehicle starts and is running fine, if the CCA are to low then EFI wont flash the...

I can download all the settings from my pcm and save the tune file but when I go to upload the new tune with the changes I get "battery voltage to low or to high" and then it says the upload was...

I plugged my EFI live and read the DTC's. One error come up C0309 - Motor A/B Circuit High anyone have any idea what this means?

I think I'm having a passlock issue. I was installing my Sirius radio the other day and then after my truck wouldn't start. I checked everything I can think of spark, gas, fuses, everything looks...