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4L80E Shifting Issue - SOLVED
Had a 2000 80E in a C3500 that I rebuilt that developed a shifting issue 4 months after rebuild. Once totally warm, it would start and stay in 2nd and only shift into 3rd when off throttle. It would shift right back into 2nd pressing the gas pedal. No SES. @NickTransmissions helped...- Bfr57
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- Forum: Engine & Drivetrain
