Over time, corrosion could cause the secondary hood latch to stick in the open position. If this happens and the primary hood latch doesn't engage or is released, the hood can open suddenly while driving.
Safety Risk
A hood that opens suddenly while driving can block the driver's view and increase the risk of a crash.
Corrective Actions
General Motors will notify owners by mail and instruct you to take your vehicle to a dealership to replace the hood striker assembly and hood latch assembly.