2011 Chevrolet Impala Owner's Manual - Page 293

Vehicle Care 10-37 Replacement Bulbs Exterior Lamp Back-Up Front Parking/ Turn Signal License Plate Lamp Headlamps High-Beam Low-Beam Sidemarker Stoplamp, Taillamp, and Turn Signal H9 H11 194LL 3057 Bulb Number 921LL 3157NAK 194LL Electrical System Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect the following in the vehicle: ... Headlamp Wiring Windshield Wiper Motor Power Windows and Other Power Accessories Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible. For replacement bulbs not listed here, contact your dealer.