T56 Gear Grind Issue
08-22-2006, 10:11 AM
#3
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Originally Posted by calhoon
Sounds like a wear out condition. If you re-engineered the oil( synthetic/ non DexIIIspec)that could be the cause as well.
08-22-2006, 10:55 AM
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I have had the same issue with mine. The difference is, Mine grinds in RPM's around 4000 and higher and it does it going from 1st-2nd, 2nd-3rd, and a little in 3rd-4th. Myself and others came to the conclusion that it was a clutch issue. I installed a brand new LS6 Clutch kit, replaced the slave and the master.... It still does it. I still haven't fixed it, but rather just live with it.
08-22-2006, 12:21 PM
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yeah I have the exact same prob 
.......my friend thinks it might be the sincs....im going to install a 5.0 shifter and change the slave cylinder and do the drill mod to c if that makes any diffrence 
.......my friend thinks it might be the sincs....im going to install a 5.0 shifter and change the slave cylinder and do the drill mod to c if that makes any diffrence 
08-23-2006, 11:27 AM
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I have the same problem with 1st-2nd mainly. Almost every time it is during higher rpm operation and grinds about 80% of the time. I had 2 dealerships check it out and they "didn't find a problem". 
5th sometimes gives me a problem as well, but nothing compared to the 1st-2nd shift. I would think if the master/slave cylinder needed to be bleed, I would have more problems with 2nd-3rd right!?! BTW I did the clutch slip test on the highway (WOT in 6th) and I didn't have any slipping.
Let me know what you find out.
5th sometimes gives me a problem as well, but nothing compared to the 1st-2nd shift. I would think if the master/slave cylinder needed to be bleed, I would have more problems with 2nd-3rd right!?! BTW I did the clutch slip test on the highway (WOT in 6th) and I didn't have any slipping.Let me know what you find out.
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08-23-2006, 06:21 PM
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Ok this is definately a 2nd gear sync problem. Mine did the same thing. The 2 gear syncronizor was worn out. Oh yea I also broke the 6th gear shift fork. Dont ask how..
08-24-2006, 03:40 PM
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Mine seems to grind 3rd, but only on upshifts, and never at WOT. I guess this is somewhat uncommon? It's not really a full grinding, but more of a not-so-smooth feeling through the shifter.
