Difficult Shifting - GM 4SPD 76mm O/D Passenger

Worn shift forks on both 1st and 2nd 3rd and 4th can cause difficult shifting due to the shift fork groove surface finish in the synchronizer assembly. New synchronizer assemblies have been supplied with a smoother surface in the shift fork groove to correct this condition. Part Nos. are: 1-2 Synchronizer Assembly 14062629, 3-4 Synchronizer Assembly 14062631.

Replacement of both synchronizer assemblies and shift forks when servicing is mandatory. Reused synchronizer assemblies may contain small burrs which can cause condition to reoccur.