Last year I bought an 08 suburban 2500 with 51,000 miles. Body in excellent condition. I planned on using this to tow my trailer and be an everyday driver for my wife for many years to come. It ran an...
This may have nothing to do with anything but my last Suburban had two gas tanks. As I understand it there was a pump inside one of them that would pump the gas back to the first tank. This is a different pump than the fuel pump. Apparently that pump can go bad and suck the life out of the battery/alternator when it is called upon to work. Is there any chance your electrical problems happen when the fuel gauge shows less than 1/2 full?