Does anyone have acess to a Alternator wiring schematic for a 02 5.3, to the bcm.
I'm on my quest to rid my flashing battery light and i believe the bcm is looking for a response from a terminal that is not there.

I have 02pcm in my 99.

I think if I can find a differance maybe a wire can me added.

Any help would be great.

 

Man, if you find a fix for that.... Im gonna scream like a little girl. Dont know why, but I miss my little info center screen.

 

There must be one, Chevy isn't that complex.

another option I was going to try is to take the vin from the 02 pcm and have an 02 bcm flashed with it.
I already have the 02 Cluster so other than those three things would be the wiring.
The whole thing seems pretty stupid

 

I thought I read somewhere that there was an extra wire in the later model trucks. Just gotta track it down. I have no motivation though. Im not sure where you can get a wiring diagram. Maybe a GM dealer will print some stuff off for you.

 

Is this good? '02 wiring.

 

Here is the one from the 99

 

I owe you one!!!


I can't scale it down to print but from looking at it, seems that the 99 has a l-Terminal going into the pcm(left) 5, and 15 toghether(brown) and the 02 has 2 sepearte wires,15 and 52, charge indicator(brown) and duty cylce(grey)