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

2000 CHEVROLET EXPRESS
100,000 MILES
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DAVE CALLANS
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  • 18 POSTS
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?
Nov 13, 2011 at 2:19 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
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.
Nov 13, 2011 at 2:59 PM
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DAVE CALLANS
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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?
Nov 13, 2011 at 4:14 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
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
Nov 13, 2011 at 4:34 PM
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DAVE CALLANS
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  • 18 POSTS
Thanks i thought you could install it that way but i wasnt sure.Very reliefed
Nov 13, 2011 at 5:07 PM
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