United States 87V165000
General Motors, LLC
The problem
INTERNAL CORROSION OF PULSAIR CHECK VALVE ASSEMBLY COULD PERMIT EXHAUST GAS TO MELT THE PLASTIC SHUT OFF VALVE AND DRAW VALVE PIECES INTO THE AIR CLEANER AND THROTTLE BODY.
Risk
IF VALVE PIECES LODGE AGAINST THROTTLE PLATE, ENGINE MAYNOT RETURN TO IDLE RESULTING IN LOSS ACCELERATOR CONTROL AND POSSIBLY A CRASH.
What owners should do
REPLACE PULSAIR CHECK VALVE AND SHUT OFF VALVE WITH NEWLY DESIGNED VALVES.
Units 126319