I'm working on the 1997 in my signature. The truck stopped charging and the GEN light is on. There are 2- #37 codes and a #47 code set. I've replaced the crank sensor and added a external voltage regulator. I probably didn't need the sensor as the A/C was working along with the tach and the cruise. The alternator was bad and has been replaced. It will charge at the high range of the dash meter and the GEN light is still coming on. The other concern is that it won't shift into overdrive and acts like it's starting out in second gear. any suggestions on what I should do next?

 

Do you have voltage at the ASD relay? Double check your IOD fuse........... Sounds like the circuit isn't getting power somewhere.

 

I'll check the ASD relay as soon as I can, I did swap the relay with another one in the PDC. Do you mean power at the terminals with the relay removed? Also, where id the IOD fuse?

 

In the dash side fuse box.
It's the one with the cover over it.

 

Would this fuse being out cause the no charge condition as well as the two transmission codes? The cruise and everything else seems to be working.

 

No.
Assuming all the fuses are good it's more likely you have a poor connection than a bad PCM.
The connector at the PCM is cheap and notorious for the female connectors enlarging or falling apart.

 

Do these plugs fall apart with being undone. I mean can you see the damage without taking them apart. I don't think these have ever been apart and look to be in great shape from the outside.

 

The only bad PCM connectors I've come across have been unplugged but that's the only way to see them. Hard for me to know if they had been unplugged previously.
I've never had to mess with the PCM on my two trucks where I know the history.