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Transmission

Tiny
JACKIE BURNS CIEMENTS
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • 5.7L
  • V6
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
I bought this truck, serviced the transmission, the previous owner said he had replaced the shift solenoids. We serviced it and found a pinched wire , figured that was some problem, replaced the wiring harness, now it chatters occasionally. Im lost. My husband is a certified mechanic but hes stumped now too
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Monday, March 13th, 2017 AT 1:42 PM

5 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
Does this occur only around 30 - 40 mph? Does the chattering stop if you hold the accelerator pedal steady, then lightly apply the brake pedal?
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Monday, March 13th, 2017 AT 5:27 PM
Tiny
JACKIE BURNS CIEMENTS
  • MEMBER
  • 2 POSTS
When it shifts to over drive it shudders, let off gas then hit it and it goes smooth or hit brakes shudder goes away. This truck has a new crate motor in it. So I do not want to say forget the truck, lol.
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Monday, March 13th, 2017 AT 6:28 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
If this only occurs at the speeds I listed, the best suspect is the transmission has the wrong fluid. Do a filter and fluid change and ask at the dealer's parts department which is the correct fluid to use.
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Monday, March 13th, 2017 AT 7:02 PM
Tiny
JACKIE BURNS CIEMENTS
  • MEMBER
  • 2 POSTS
It does not occur at the speeds you listed, it occurs at sixty mph and goes away if you let off the accelerator or tap the brakes.
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Tuesday, March 14th, 2017 AT 6:40 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
You're still describing the same symptoms of using the wrong fluid. I'd pursue that before you go looking for more expensive solutions.
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Tuesday, March 14th, 2017 AT 6:25 PM

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