I was reading 2006 Hummer H3 3.5 with P12 ECM.
It did stop reading the ECM at different times and I was not able to finish the reading until I un-ticked the Use High Speed option in the Vehicle Reader window.
Is there any rule of thumb when High Speed reading should be used and when not?
Using MPVI2 with firmware version 3.0.30 and VCM Editor 4.5.1162 Beta.
Are there any similar actions needed when writing?