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Anonymous Posted on Jun 04, 2017

Tranmission doesn't shift properly, high rpms and whining noise

Vehicle has 105K miles on it. Have intermittent problem with automatic tranny not shifting esp when under pressure as in going up steeper elevations. RPMS increase to 2-4 and have to let off gas to decrease. There is also a whining noise when the rpms increase beyond the "norm" for climbing. This problem has just recently started. Someone suggested changing the transmission fluid and filter. If that is the problem, how does one go about that? Is this a task for a novice?

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Ryan Lutton

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  • Posted on Jun 05, 2017
Ryan Lutton
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Yes, it's a task for a novice, but don't do a complete flush or you're asking for problems. Just change filter and replace fluid lost with Dexron 6. Before you start throwing parts at it...see this. http://twincharlotte.com/blog/30-common-4l60e-transmission-problems-repair-charlotte-nc/

Joe Stanton

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  • Chevrolet Master 1,154 Answers
  • Posted on Jun 04, 2017
Joe Stanton
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The transmission fluid filter is the problem. This service should have been done at 80,000 miles. A dirty filter will cause the charge pump whine and loss of charge pump pressure will cause clutch packs to slip. Do not perform this service yourself, Its messy and not for novices. Do not drive or damage to clutch pack friction plates will occur.

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5 Related Answers

Anonymous

  • 4669 Answers
  • Posted on Feb 27, 2009

SOURCE: 1993 Chevy Silverado

Replace the vehicle speed sensor, it's located in the tailhousing of the transfercase

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Anonymous

  • 31 Answers
  • Posted on Apr 24, 2009

SOURCE: trans not shifting

your transmission has a vacumn modulator on the side it requires vacumn from the engine to shift make sure the vacumn hose from the trans to the engine is plugged on and working, if that is correct then step 2 is the governer which would require a tranny shop to check, but id bet on the vacumn line give it a try! good luck and thankx billy

Anonymous

  • 4669 Answers
  • Posted on May 06, 2009

SOURCE: 1997 Suburban 4x4 5.7L Transmission whines until it shifts

You rear planetary set is worn from a restricted cooler.

Anonymous

  • 1140 Answers
  • Posted on Jul 22, 2009

SOURCE: 1988 Chevy shifts late

Only if its a 3 spd tranny. If O/D then check tv cable on carb. If good you can check gov also. Whats fluid look/ smell like?

Anonymous

  • 69 Answers
  • Posted on Sep 22, 2009

SOURCE: I recently replaced the transmission on a

you have to adjust the gear lever in park untill the gearbox is set precicely in park by tweaking untill just right.
Hope this helps!

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