Not charging

[MarderDave]

The other night after I cranked my 2006 2500 5.9 the lights blinked after that the voltage started dropping. It's like I have a dead short but I checked everything out and couldn't find anything. I put a new alternator on it this morning but it is still doing the same thing. Had anyone have any ideas?

 

[cerberusiam]

Bad cables, ends, connections, batteries, etc. If you pulled the cables off like you suggested in your other post, the ECM is now suspect.

 

[Prairie Dog]

Grid heaters?

 

[B.G. Smith]

Check the fusible link where the big wire from alternator goes into the PCM on left inner fender.

 

[BILTIT]

Grid heaters?

This. How long does the voltage drop for? Does it ever come back? I know my truck will show a lower than normal voltage on gauge while the grid heaters are cycling or a pre-determined time after startup (not sure which?). Have you checked your voltage with a multi-meter to see what is actually happening?

 

[PWong]

https://www.turbodieselregister.com/threads/256839-Not-charging

Guys read this please.