2007 Chevrolet Silverado 3500 HD Q&A
2007 Chevrolet Silverado 3500 HD Question: battery light on?
Check the alternator output, battery cables and battery condition. - Bret Bodas
My brother in-law has a 3500HD 6.0 gas it sat for two weeks in avg temp below 32 degrees it won't start, no lights no anything. I took out the batteries to test and charge them. one was bad (main)...