THE RIGHT REAR DOOR LOCK NO LONGER FUNCTIONS PROPERLY, AND MUST BE MANUALLY LOCKED OR UNLOCKED. ALL DOORS IN THE VEHICLE ARE SUPPOSED TO, AND ASSUMED TO BE, LOCKED WHILE THE VEHICLE IS IN DRIVE AND WHEN THE LOCK IS HIT. HAVING A DOOR THAT DOES NOT FUNCTION AS IT IS ASSUMED THAT IT WILL PRESENTS A POTENTIAL SAFETY ISSUE THROUGH VANDALISM/THIEVES OR IN THE EVENT OF AN EMERGENCY AS THE RESULT OF AN ACCIDENT. LOOKING THROUGH THE EXISTING LIST OF COMPLAINTS HERE AND ALSO ON MODEL SPECIFIC FORUMS, THIS ISSUE IS WITHOUT A DOUBT A WIDESPREAD ONE THAT NEEDS TO BE ADDRESSED BY GM, CONSIDERING THE NUMBER OF CARS IT AFFECTS NOT ONLY FOR THE MALIBU MODEL, BUT ALSO OTHER VEHICLES THAT THEY SELL. *TR