Transmission will not shift out of low gear

132,000 MILES • 2WD • AUTOMATIC
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CHARLES77
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  • 1 POST
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.
Jun 24, 2017 at 2:56 PM
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