GMC TSB #PIP3161F
2013 GMC Sierra 2500
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
- Summary
- This Preliminary Information communication provides information to the technician about vehicles with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.