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1996 GMC Sierra Automatic Transmission Sounds

Tiny
MOBYD13
  • MEMBER
  • 1996 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 212,000 MILES
My '96 GMC 1500 has a rebuilt automatic transission with around 60,000 miles on it. The issue is that when the truck is in gear there is a scraping noise. When I put the truck in neutral or park the sound goes away. The transmission has been serviced about 20,000 miles ago. The fluid looks good and is at a good level. Ideas?
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Wednesday, March 3rd, 2010 AT 7:02 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Do you hear the sound when the vehicle isn't moving?
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Tuesday, March 16th, 2010 AT 9:28 AM
Tiny
MOBYD13
  • MEMBER
  • 2 POSTS
Yes, as long as the vehicle is in gear. In neutral or park there is no noise.
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Tuesday, March 16th, 2010 AT 6:06 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
It sounds like an internal problem. It could have to do with the clutch packs. I hate to say it, but I think you need to see a trans tech with this. It isn't a sensor, solenoid, or electrucal issue.

I wish I had better noise, but that is what it sounds like to me.

Joe
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Tuesday, March 16th, 2010 AT 10:15 PM

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