24v Cummins with 47re tranmissions truck will not shift out of low gear. does the lift pump have anything to do with the shifting?
Jun 24, 2017 at 1:05 PM
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CARADIODOC
✓Experienced Mechanic
34,414 POSTS
Nope. I do not remember if a kick-down cable was still used in 1999, but if your truck has one, check if it is sticking. That was a real common problem that caused delayed or late up-shifts, and early and harsh down-shifts.