Hey all, i am new to tuning, and thought id ask for some input. Quick background on the truck.
I have a 2006 ex cab z71 with the L33 and 60e. Its on its 3rd transmission, BUT but it does have 400k miles on the truck. Father in law has owned it since 17,000 miles and gave it to me to fix for my daughter when the trans started flaking out again. No big deal to me since that meant she would have something to drive other than my Nova.
Ok to the issue. The truck has ALWAYS had a goofy 1-2 shift. Anything less than 25 percent throttle its just a slow sliding shift, worse than my 06 tahoe. Then 25 to id say 50 percent throttle its a slide with a quick slam into second. And finally above 75 percent its a flare slam into 2nd gear.
But 2-3 and 3-4 have and are always fine. Tps works and reads fine, coolant temp sensor fine. So no external sensors should be causing this, and since all 3 transmissions over 400k miles have acted the same i can only figure it is the shift tune. If i upload the factory tune can someone dissect it or give it a look? I only have tunerpro and there isnt currently an xdf to look at the 7811 operating system.
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