A poor electrical ground under the battery tray may cause the ABS warning light to illuminate. Our technicians tell us that cleaning and properly securing this ground and also the main ABS ground on the frame rail below the drivers door may be necessary.Google+
Car Problem Reports
Chevrolet Silverado 1500 HD ABS Light Due to Poor Electrical Ground Under the Battery Tray
Chevrolet Silverado 1500 HD Problem
Average Mileage: 87,393 mi (71,000 mi - 111,181 mi)
Air Bag light came on then check engine, traction control, etc... All door locks cycled on and off. Engine started to stall. Dealership stated that there where no codes and they could not recreate the problem. Drove the truck for two days with no problems. The third day I started the truck and the airbag light came on and the gear indicator stayed in park when the vehicle was in drive. Turned the truck off and then back on and the light when away and the gear indicator worked properly.
Visitor, 2003 Chevrolet Silverado 1500 HD, 111,181 mi
The ABS light was staying on the would turn off, now it's staying on again and the truck is "running ruff"