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# 190101.
INFORMATION REGARDING NORMAL DIAGNOSTIC IF THE OPR VALVE IS CAUSING THE LEAK AIR TO BE HEARD EXITING THE RUBBER DUMP HOSE, WHICH IS LOCATED ON THE LEFT SIDE OF THE FUEL TANK. *TT
