I had to use one of the Tech 2 scan tools today at school after I bled my brakes, and it took me a while to correctly select ALL of the frickin options, I was guessing most of the time.

I saw that I could calibrate my tires in there, but apparently I had one of the settings wrong, 'cause it wouldn't communicate with my truck.

Anyhoo, can anyone point me in the right direction? I would love to calibrate my ECM for my 265s.

Should be:
2004
Chevy Truck
Light Duty
C Series

Then there were a couple more, I can't remember. Any help?


Tom

cant do the speedo with a Tech 2.

You can only recalibrate the EBCM/EHCU (ABS computer/interface unit) for bigger tires, not the speedometer or ECM itself. You need a handheld tuner or EFILive to change the speedometer.

Thanks!


Tom