Electrical Draw on Transfer case Circuit

[mrblue54]

Gents,
The battery on the Tahoe keeps going dead. Found that #2 transfer case is drawing amps even when the truck is off.
Anyone have any ideas?
MrBlue

 

[lesterl]

Unplug the transfer case control module from under the dash (steering column), this should kill the battery drain, it is the only thing fed with the ignition off, now the other 3 battery feeds could if the ignition switch were bad.