THE CARS HEADLIGHTS WILL RANDOMLY SHUT OFF OR ONLY HIGH BEAMS WILL WORK, THE 3800 MOTOR HAS MANY ISSUES WITH PARTS MALFUNCTIONING OVER AND OVER NO MATTER WHAT MANUFACTURER THAT'S USED TO SUPPLY THE PARTS OEM OR AFTERMARKET, I'VE REPLACED MANY MAF, TPS, IAC, CPS SENSORS OVER THE BRIEF AMOUNT OF TIME OWNING PRETTY MUCH ANY VEHICLE EQUIPPED WITH THE 3800 SERIES II V6, GAUGE CLUSTERS RANDOMLY STOP WORKING BUT THAT A KNOWN GM ISSUE FOR MULTIPLE VEHICLES FOR SEVERAL YEARS, COOLANT COROSSIAN AND INTERNAL RUST FROM DEX COOL COOLANT