battery drain?

[RGSMDNR]

ahh ok, thats good to know. Would it matter if the PCM was programmed or stock mode? can someone explain why it draws current while the truck is off?

[Longshot270]

Im not sure having the PCM progarammed would make a difference on the electrical draw. As far as I know the small amount of draw is what lets the computer remember what the latest amounts of data there are. You know when you unplug the battery that you usually lose the radio presets and stuff?(my truck doesn't do it but my dad's does) I think one of the things it remembers is the last driving conditions, I've noticed that some vehicles will throw P1000(?) codes after being reprogrammed or having the battery unplugged. I also think its the same on the gryphon, that small amount of draw lets the programmer remember stuff like your averge MPG and top speeds, that kind of stuff. This part Im not so sure about

[88Racing]

Oh let's see here?
Some examples of current draw while vehicle is off.

KAM. Keep Alive Memory
Security. PATS system.
Remote Start.
Radio memory including clock.
Shut down sequencing procedures when vehicle is turned off.

A battery tender directly bolted to the post clamps may be the best way to combat losses while the truck is sitting. Especially like my garage queen. But if your truck is a daily driver I wouldn't worry about it.

Lars