LLY: Batteries not charging [Archive] - Duramax Diesels Forum

PDA

View Full Version : LLY: Batteries not charging


TBSK
01-02-2012, 08:35 AM
I have an 05 Duramax with 155,000 miles, runs and starts perfect just replaced water pump and the other day battery light came on and the info center saying battery not charging. Took it into dealer they put it on the machine it told them the PCM is not telling the altenater to charge batteries. So I bought a new PCM, put it in and its still doing the same thing. Any suggestions? Before I spend more money..

MACKIN
01-02-2012, 08:41 AM
So the dealer cannot figure it out? What voltage are you getting at the batteries with truck running?

MACKIN
01-02-2012, 08:43 AM
Oops check all connections at the alternator also.

DIGGLER
01-02-2012, 08:47 AM
isnt there an "alt" fuse in the fuse panel? if so, may want to check that. should be like a 10-20a fuse for that i was thinking...