I have a 2011 GMC Sierra 4X4 that upshifts at 6300 RPM at WOT in first gear which equates to 43 MPH. I have adjusted all the shift table to shift at 37 MPH down from 40. Also adjusted the RPM Upshift tables to 5625 RPM. Is there another table that I should look at? Can someone give me some advise? I appreciate whatever you can give me as I am some what new to the newer GM programming.
Set your mph lower, not only in the wot tables but in to 80%-100% of the normal shift. Both mph and rpm need to get met to shift @ wot. And some fly by wire throttles don't even register 100%. Give it a try and report back.
Custom PCM Tuning in Hollywood Ca
There was a table that I had missed that was set to 318 MPH in the 1st ti 2nd shift. Change that table and now shifts out at 6000 RPM at 40MPH. Thanks for the help.
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