1996 GMC Sierra Automatic Transmission Sounds

1996 GMC SIERRA
212,000 MILES • V8 • 4WD • AUTOMATIC
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MOBYD13
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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?
Mar 3, 2010 at 7:02 PM
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JACOBANDNICKOLAS
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Do you hear the sound when the vehicle isn't moving?
Mar 16, 2010 at 9:28 AM
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MOBYD13
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Yes, as long as the vehicle is in gear. In neutral or park there is no noise.
Mar 16, 2010 at 6:06 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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
Mar 16, 2010 at 10:15 PM
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