NHTSA recall 10V223000

What's wrong: Affects vehicles equipped with a 2.8L v6 engine. If low octane (regular) fuel is used in the vehicle instead of the required high octane (premium) fuel as stated in the owner manual and on the fuel filler door, the combination of regular fuel usage and aggressive driving maneuvers may induce pre-ignition. If pre-ignition occurs, you may hear a pinging or knocking sound from the engine.

Why it matters: If the vehicle continues to be driven after the onset of this noise, a connecting rod or piston may break, resulting in engine damage, and perhaps engine failure, which would disable the vehicle increasing the risk of a crash.

The fix: Dealers will reprogram the engine control module free of charge. The safety recall is expected to begin on or before June 11, 2010.