Two problems related to alternator/generator/regulator have been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below.
: the contact stated the vehicle looses power intermittently. The first time this occurred, the dealership determined a rodent had chewed through the wires. The wires were replaced. The second time this occurred, the dealership determined a clip was loose. The third time, the battery had just been charged and after driving for 40 minutes the vehicle lost all power. The vehicle would not restart, so it was jumped. The vehicle lost power again and would only travel at 10-15 mph. The vehicle was towed to the dealership. The dealership checked the battery and alternator, but determined both components were in good condition. The dealership was unable to duplicate the problem and no codes were present.
Consumer stated that all four doors don't work properly. Radio is not working as well. While driving, all gauge warning lights continuously illuminates the dash board. Dealer replaced. Alternator, radio twice, door electrical system. The dash board including the gauges and still persist the problem intermittently.