Thanks for your answer. The truck battery has not died because of this.
For the past 3 years we have been camping with a 24' travel trailer. We are almost always connected to "shore power" at night so I have never had a problem with the trailer draining the truck battery. This year we may have some multi-day periods where we are camping without being connected to "shore power". I was simply trying to determine if I needed to make sure the trailer was disconnected from the truck during these times to prevent draining the truck battery, or if the truck would "take care of itself".
I agree that the interior lights are automatically turned off after a certain time to prevent draining the truck battery. My understanding is that this mechanism is based strictly on time, ie, after 30 minutes (or some other pre-set time) cut power to the interior lights. It had not occurred to me that this same system might also cut power to the attached trailer. For an attached trailer it is probably not time related. Is it based on the battery voltage dropping below a certain level?
I thought I remembered reading that there was protection built into the truck to prevent an attached trailer from draining the car battery (if it exists I suppose that this protection would be part of the factory installed tow package). However, I have been unable to find the reference and when I asked a mechanic at the Chevrolet dealer he said he did not think there was any built-in protection for this. Could you possibly provide me with some "official" GM reference that describes this protection?
Thanks for your help.
Wednesday, July 3rd, 2013 AT 2:39 AM