T56 Problem Need Help!!
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T56 Problem Need Help!! Hello everyone recently I blew up the 10 bolt with 3.90s on my 2001 SS m6. When the rear exploded I think it took something in the trans with it unfortunatly, but i do not know what. The rear was rebuilt, but once tried to move the car the t56 Transmission is locking/seizing up and making an extremely loud grinding/screetching noise the majority of the time when completely letting off the clutch in reverse and 1rst gear, which are the only two gears i have tried moving the car in. I belive there is nothing suspect about the clutch as it engages properly and feels fine. The noise is coming from the rear of the transmission and goes through the shifter. Can some people please come in and help give me any ideas of what can be wrong. Thanks
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My Mechanic who built the rear took out the driveshaft and checked the yolk and output shaft and everything looked fine and it was still connected after the rear exploded.
Last edited by 01articwhitess; Feb 1, 2016 at 11:10 AM.
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It is making the noise and the transmission is Locking right after completely disengaging the clutch when trying to drive the car. I havent tried getting the car out of first gear or reverse because of the way the Trans is siezing. The best way to describe it is a screatching/ grinding noise along with the Trans seizing up preventing you to move until you push your foot on the clutch.
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It is making the noise and the transmission is Locking right after completely disengaging the clutch when trying to drive the car. I havent tried getting the car out of first gear or reverse because of the way the Trans is siezing. The best way to describe it is a screatching/ grinding noise along with the Trans seizing up preventing you to move until you push your foot on the clutch.
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No, i have not done that yet. Its hard for me to constantly check up on things lke this because the car is currently sitting in my driveway and im away at College.
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the noise is coming directly from the trans by the shifter and you can feel the trans siezing up, I dont think it is the rear but i can give that a shot. Also if this helps when sitting still idleing or with the car off, the car smoothly goes through every gear, but when you try to reverse or take off in first, once you fully disengage the clutch and get rolling the trans siezes and makes the gringing noise stopping the power being transfered to the wheels.
That's why I believe it's the rear ended. Lol. It may sound like it's coming from the trans because its transferring up the driveshaft into the tail shaft which is right at the shifter.
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Very true, i will try that as soon as possible. My pefromance mechanic that i have been dealing with for a very long time rebuilt the rear end and has done plenty of them and knows what he is doing. I guess putting it up on the stands will show where the problem is. So what your saying is to put it on stands, pull the driveshaft out and start the car up and go through the gears to see if its the trans acting up or not?
Yes that's what he wants you to try. I agree with him too, it's an easy way to check if it's rear axle related.
Does it grind as soon as you start letting the clutch out?
Does it fall into 1st and reverse (from neutral) nice and smoothly with the car running?
Does it grind as soon as you start letting the clutch out?
Does it fall into 1st and reverse (from neutral) nice and smoothly with the car running?
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No, it does not grind as soon as i start to let out the clutch, it grinds and seizes once the clutch is fully disengaged only. I am able to feather and play with the clutch without any problem until it is Completely disengaged. Also it falls into every gear from nutral perfectly whether the car is running or shut off.
Definitely yank the drive shaft off and start the car then see if you can get into 1st and reverse without problems.
Tranny/bellhousing doesn't have any noise coming from it at idle?
I guess it would be possible for something to be damaged from the rear end breaking but right now I'm not convinced.
I guess you can also have someone else try to move the car while you lay down listening to locate the noise to the transmission or rear.
Tranny/bellhousing doesn't have any noise coming from it at idle?
I guess it would be possible for something to be damaged from the rear end breaking but right now I'm not convinced.
I guess you can also have someone else try to move the car while you lay down listening to locate the noise to the transmission or rear.
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Definitely yank the drive shaft off and start the car then see if you can get into 1st and reverse without problems.
Tranny/bellhousing doesn't have any noise coming from it at idle?
I guess it would be possible for something to be damaged from the rear end breaking but right now I'm not convinced.
I guess you can also have someone else try to move the car while you lay down listening to locate the noise to the transmission or rear.
Tranny/bellhousing doesn't have any noise coming from it at idle?
I guess it would be possible for something to be damaged from the rear end breaking but right now I'm not convinced.
I guess you can also have someone else try to move the car while you lay down listening to locate the noise to the transmission or rear.
It doesn't sound like you have any slave cylinder issues or master cylinder/air in the line problems. That's why we're telling you to check out the rear end by removing the drive shaft. That will certainly help locate the problem.
When a rear fractures, it sends a severe totque reversal through the drivetrain. This can bend the transmission mainshaft and fracture the rear casting AND the bell( especially on the passenger side). A damaged casting will need attention. A bent mainshaft could cause what you reported.