My 4l60e upshifts rapidly and won't downshift even at wot! BUT only after its warmed up. All shift are perfect first 15 minutes of driving it. no dtc's Can somebody help?
My 4l60e upshifts rapidly and won't downshift even at wot! BUT only after its warmed up. All shift are perfect first 15 minutes of driving it. no dtc's Can somebody help?
Here is my tune file: Attachment 27929
Also when it does this if I disconnect the battery and reconnect, it works perfect again??? Please any help would be appreciated.
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