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68gmsee · 10-10-2012, 06:40 PM

First check the lube in the transmission and if that's okay, I would suggest remove it and double check the pressure plate, throw out bearing, pilot bushing and clutch plate for any problems. It's possible the synchronizer in the tranny is shot but I would first eliminate the other potential problems.

If the clutch is not releasing it will definitely cause the problem you're having. Also if the pilot bushing is seizing. Clutch and pressure plate contamination or defective can cause the vibrations you're having as well as worn input shaft bearings in the transmission.

10-10-2012, 06:40 PM	#2
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Help needed identifying transmission problem. First check the lube in the transmission and if that's okay, I would suggest remove it and double check the pressure plate, throw out bearing, pilot bushing and clutch plate for any problems. It's possible the synchronizer in the tranny is shot but I would first eliminate the other potential problems. If the clutch is not releasing it will definitely cause the problem you're having. Also if the pilot bushing is seizing. Clutch and pressure plate contamination or defective can cause the vibrations you're having as well as worn input shaft bearings in the transmission. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...