How big of a battery do you need for a Duramax?
How big of a battery do you need for a Duramax? Although Duramax engines generally prefer batteries with a group size greater than 48, check the owner’s manual to get the appropriate battery size for the vehicle. Remember, the larger the battery, the more power it provides, so always choose the largest possible size that will fit your vehicle. When to replace starter on Chevy GMC diesel 6? Installed and started truck ran good started good until last night 9/26/2019 started truck... but the starter stayed engaged and I had to disconnect battery to make it stop.... and of course...