What is the secondary battery for 1999 suburban 5.7 4 x 4

Asked by Jul 24, 2017 at 11:06 PM about the 1999 Chevrolet Silverado 1500

Question type: General

Just curious why the 1999 Chevy suburban 1500 4 x 4 has two battery
slots for and does it need to batteries for daily driving

1 Answer

70

probably as an option for the gov issue version. Extra batteries are usually there to help charge or keep accessories on without killing main battery

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