The module in the passenger kick panel is the ABS; the PCM is under the hood, passenger inner fender.

RwP

 

That would do the job also; but one other problem with age is that the females are getting loose and slightly unsprung.

This can make for an intermittent contact.

Solution is to release the contact, pinch them EVERY SO SLIGHTLY tighter, and reassemble. Don't just "Mash it down!", but snug it up.

(Then use some thing like dielectric grease so oxygen can't get in and oxidize it again ...)

RwP

 

UPDATE:

Sent my PCM to Module Experts in Jax, FL. They are telling me the main processor (not the drivers) is the problem. This is what they said:

"The chip is not able to be replaced on this module, as it is made into the circuit board assembly, so you would need to replace the unit to correct the issue."

So I'm adding another $350 on top of the $150 I paid for the diagnostic to get a remanufactured PCM. Lifetime warranty.

 

OK, @RalphP, After the first reman failed I finally got my second reman unit. Truck fired right up (whew)! Drove it around 14 miles and she seems to be totally fine. However, the CHECK ENGINE light is on. Was on as soon as it fired up and has stayed on. I'm getting a 1,2,4,1,5,5 flash code. Translates into Code 41 which is, "An open or shorted condition detected in the generator field control circuit".This code was not present previously. Care to give me your insight as to what this could be? Wondering if it was a leftover code from the previous owner. Reset?

Thanks, Ed

 

Clear the codes and see if they come back. Field windings are controlled by the PCM though....... so, if the wiring is good, it's a PCM problem. External regulator might be the way to go.

 

HeyYou has it in one.

Although, you might need to triple check the field connections at the alternator; would not be beyond possibility one of the two nuts (or both!) is/are loose back there.

RwP

 

I contacted the place that sold me the reman. I asked if it could be a leftover code from the previous owner and he said it is not uncommon that remans will flash a soft code. He advised to drive several cycles, perhaps a couple hundred miles or so because most of the time the PCM will sort itself out. Said if the check engine light is still on after a couple/few hundred miles then call him back. He'll probably tell me to do a reset if that's the case. I want to be sure he's in the loop since it's their warranty so I'll follow his instructions. Took the truck out again and drove another 24 miles. She purrs like a kitten like she always has.

 

Checked the connection. Seems solid.

 

I'd then consider adding an external regulator (shucks, it's on my long term plan list ANYWAY!) and possibly connect a 6 ohm 50W resistor right at the ECU or right from the ECU.

RwP

 

OK, that's beyond my comprehension at the moment (I'm no electrician). I took a photo of my voltage gauge. This thing seems low. I always remembered it more toward the middle of the gauge.