Ok, Changed out the ABS valves and module, bled the everything and the brakes are good. ABS and Bake lights are gone and staying even after test drive. Ran scanner and got one code. Erased it to run again and three coeds. Disconnected battery for about 10 minutes but codes keep come back. The same codes from before. I just don't get it. ECU is a part of some of the codes but don't they require a service shop to correct it? Just curious

 

What codes are you getting?

 

65 Open power relay. 47 is Shorted Iso Solenoid or open ecu output-LF and 45 is Open Iso soleniod Ecu Output-LF. These seem to never change. It flutters between 1 to 3 sometime a 4th one will show. I am starting to think there may be a issue with Ecu? There isn't to more that could be the issue brake wise. Brakes are working good and no dash lights so things are improving. Just trying to see why I would be getting these codes.

 

Where are you getting your code definitions from? Is that what your scanner is telling you?

 

That's what my scanner is telling me. I have a Zurich ZR11S. Not top end but should be good for what I am doing.

 

That becomes a problem.... as what I am seeing is:
47 Alternator -voltage low
65 Not seeing this one at all....
45 Overdrive solenoid

I am having a hard time reconciling that....

 

It's very muddy water when it comes to these codes. I checked the truck while running a day or two ago and I believe while running. It showing 13.4 volts. I have changed solenoids in the transmission as well as the part that plugs into the harness but don't remember anything about Overdrive solenoid? Everything seems fine and brakes are working good. These code only show up if I run ABS on my scanner.I'm at a loss here at this point. Doesn't sound like your having much better results. To be honest. I don't have a clue on how long these codes may have been in there?

 

Something I was thinking about last night, after I went to bed..... Are those ABS codes?????

Edit: Ok, it seems the ABS codes on this generation of trucks are single digit, 1 to 15..... So much for that thought.

 

Yes, When I run the ABS test. These are the numbers. As to truck brakes. so far so good. I was wondering if maybe some old codes may no be erasing as they should? I have done both by scanner and disconnecting battery. At least they aren't keeping it off the road.

 

Some codes do seem stubborn, but, disconnecting the battery for a while *should* get rid of 'em. I suppose the trick would be to reset the computer, turn the ignition off, then on, (not start) and check for codes again....