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Tuner in Training
4L65 First pass off tralier
My rpm level X never shifts into 3rd first pass off the trailer even after a decent warm-up.
Is there any low temp protection that's not visible in hp tuners?
the second pass is fine.
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Post your tune file. Preferably with a log of this happening. It could be on the engine or trans side of the tune either one
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I know there is a similar known issue with something exactly as you describe. I remember reading about it on this forum. The fix was never discovered and the idea was to try and get it into 3rd (or 4th) during the burnout or something like that...??? Hope you can find it. Plenty of info in that thread.
Found it. See if this applies to you? Different trans so maybe not. Good luck.
https://forum.hptuners.com/showthrea...ee-if-there-is
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Tuner in Training
may have to try letting it shift into third before i make a pass
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