GMC TSB #PIP5071
2012 GMC Sierra
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
- Summary
- This Preliminary Information communication provides information to the technician about vehicle that has a squawk or grunt type noise when shifting from 2nd to 3rd gear. Technician should replace the 3-4 clutch Friction and Steel Clutch Plates along with the Apply Plate and Selective Backing Plate.