batteries draining won't start

[torqueman]

Has anybody had problems if truck sat a week or more and dead batteries.Their both new and I've pulled I.O.D fuse but still drawing power somewhere.Any idea's.Thanks Mark........

 

[Timbeaux]

Is the alternator okay?

 

[chevyguy]

Do you have anything put on aftermarket, like lights, alarm, stereo, that is wired straight to the battery?

 

[TooMuchBoost]

A week is a long time is you have something installed particularly aftermarket that could be pulling a load.

Then again with dual batteries it would take a fair load unless the batteries were shot.

Autozones and the like will load test your charging system for free.