armyhockeynut wrote:
I have always been curious about the auxiliary battery that is in my 2001 Chevy Silverado 2500 HD.  According to the manual, this battery is for if using a truck camper?  That would lead me to believe that if I am not using a truck camper, I dont need this extra battery?
When I recently had to replace the batteries, I was told I should replace both?
If it is a desiel then you should replace both,  they are paralled and are your starting batteries.
If it is a gasser, then it is the auxilary battery that is an option.  the aux battery is for a camper, etc.