HP Tuners GM Gen 4 Training Part 34: Automatic Trans Shift Scheduling
HP Tuners GM Gen IV Training Course
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40m
Follow along with lead instructor, Jeff Evans, as he walks you through tuning the automatic transmission shift scheduling (rpm) in the GM Gen 4 ECMs for 6L80/6L90e transmissions. We take a look at the cause/effect of programming the tables using the VCM Editor and VCM Scanner software to achieve the best possible shift points.
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