Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Chevrolet for this TSB. Call your local Chevrolet dealer's service department & ask for a copy of TSB# 080420001A.
EI08084 - REAR AXLE GEAR WHINE NOISE FROM HEAVY DUTY PICKUP TRUCKS EQUIPPED WITH 11.50" RING GEAR AND MW7 AUTOMATIC TRANSMISSION (DIAGNOSE RING AND PINION). BUILT FROM OCTOBER 12, 2007 THRU OCTOBER 17, 2007. *PE
