2003 gmc 1500 4.8 4x4

[Cumminsman08]

my email is [email protected]
1GTEK14V33Z191943 JOHN SPARKMAN RED TRUCK STOCK.hpt

just looking to give this truck some giddy up and go if anyone could help out with a tune truck is stock haven't done anything yet with it appreciate all the help.

[04silverado6.0]

You can try this and see what happens. Get a good data log. Also download bluecat trans tool and map some new shift points.

[Cumminsman08]

ill hook back up to the truck later and check it out appreciate it man.

[SiriusC1024]

If I may add onto that.

[04silverado6.0]

Trans tuning looks good. I usually do not set the wot downshifts so close to the upshift, usually 5-6mph apart depending on the vehicle weight and trans.