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therink's avatar
therink
Explorer
Oct 31, 2014

Buying new Duramax HD - input from Dmax owners wanted

I am about to order a 2015.5 GMC 3500HD SLT all terrain edition Crew cab Dmax SRW and looking for input. I tow the fiver in signature below and will be installing a Reese standard rail kit for my ex...
Tow Vehicles
buddyIam's avatar
buddyIam
Explorer
Nov 03, 2014
Grit dog

If you have two batteries on the truck and 4 in the RV. The extra alternator wired specifically for the RV, recharges them much fast for the dry camper. If you are not dry camping there probably is no need for the 2nd alternator.

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