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Automatic trans works in reverse but none of the forward gears work

Tiny
DAVE CALLANS
  • MEMBER
  • 2000 CHEVROLET EXPRESS
  • 100,000 MILES
Put in rebuilt trans and torque converter, it worked fine but after about 20 it miles it wouldnt go into go into drive it had just first, second, and third. Then they went out to, but it would still drive in reverse. The trans made grinding noises when the forward gears went out. Doesnt make any sounds in reverse. What part of the trans could be bad?
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Sunday, November 13th, 2011 AT 2:19 PM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
One of your clutch packs or one of the roller clutches. Take it back and have them fix it especially after 20 miles. It cold also be a valve body problem.
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Sunday, November 13th, 2011 AT 2:59 PM
Tiny
DAVE CALLANS
  • MEMBER
  • 18 POSTS
One thing I was concerned about was I didnt prefill the torque converter before assembly, but I heard you dont need to. Could this be what caused it?
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Sunday, November 13th, 2011 AT 4:14 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No that doesn't matter, the oil getspumped into the converter first. Take it back to whoever rebuilt it and have them look at it again. Hard telling what is wrong
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Sunday, November 13th, 2011 AT 4:34 PM
Tiny
DAVE CALLANS
  • MEMBER
  • 18 POSTS
Thanks I thought you could install it that way but I wasnt sure. Very reliefed
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Sunday, November 13th, 2011 AT 5:07 PM

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