Truck remote start and TC battery charging
When I got my TC, I had the dealership install the wiring for TC hookup under the bed. I added remote start as a feature to the truck when I bought it specifically so I could charge the batteries with...
Forum Discussion
Z-Peller wrote:
Not entirely true. On my GM trucks back to 2009, the owners manual says driving in towhaul or turning on headlights will send full charge to trailer plug regardless of truck battery fully charged regulator issue.
What it says on page 4-82 is
If charging a remote (non-vehicle) battery, press the tow/haul mode button located at the end of the shift lever. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for tow/haul mode, turn on the headlamps as a second way to boost the vehicle system and charge the battery (in the trailer).
But, previously on page 3-21 it says
The vehicle has Electric Power Management (EPM) that estimates the battery’s temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery.
When the battery’s state of charge is low, the voltage is raised slightly to quickly bring the charge back up. When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gauge or a voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal.
I simply do not believe the statement on 4-82 as it contradicts the statement "When the state of charge is high, the voltage is lowered slightly to prevent overcharging". Or maybe I should says, I don't believe that the proper voltage will be delivered to a trailer battery to recharge it 100%. It might keep it from being further depleted by loads in the trailer, but it will not be recharged.
