Battery drain

[Dksd]

Need a help please. 2002 Silverado 1500 drains battery. Has “service 4wd” sign lit. Replaced selector switch, tccm, encoder motor. Cleaned the ground under driver side chassis. Still has the problem. “Atc” fuse reads active after Shutdown after a while. What is my problem??

[Brian715]

It was radio Circuit that went haywire on mine that had a parasitic draw. Time to get the multimeter out and figure out which one of your circuits in the problem. 

[swathdiver]

21 hours ago, Dksd said:

Need a help please. 2002 Silverado 1500 drains battery. Has “service 4wd” sign lit. Replaced selector switch, tccm, encoder motor. Cleaned the ground under driver side chassis. Still has the problem. “Atc” fuse reads active after Shutdown after a while. What is my problem??

Get a Tech-2 on it so you can read the codes properly, diagnose the problem properly and fix it cheaply.