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Ok latest truck update. Went over and completely redid the Davco. Interestingly the check ball on the intake had a broken spring and the cage was cracked, so glad I replaced it. That's why my fuel level remained low. It was draining back into the tank. Also saw A LOT of gunk in the bottom of the bowl so completely emptied it and cleaned that all out. Found half the check ball spring in the bottom. Was very fine almost like dust not stringy like previous bacteria/algae that was cleaned out when I bought the truck. I also run biocide in my fuel every fill up. Refilled the bowl, replaced all O rings, new filter, new top cap. Will start for couple seconds then run rough then die. Interesting still considering prime issue. I can pump the manual pump several times and it will be soft, then gets hard. Seems to me that means may still be air in line. One more try to get wires to starter checked then off to dealer next week if no solution.

Today going to redo Davco. After pondering most of the night, just going to change out ball valve, replace filter, O rings and top cap since I already have the parts. If it works good for me. If it doesn’t, points more to the electrical issue and that requires more expertise than I presently have although YouTube may help. Ran across a video yesterday discussing how to check the voltage on the modules if I can locate them. Couldn’t hurt to try. My time is not costing me anything and I’ve got plenty of it.

Voltage to the ECM has been suggested once before by someone on a phone conversation. I really don’t have the know how to diagnose that issue so going to try everything else I can safely do myself and then if no success…off to dealer. One bit of good news (if you call it that), I priced the tow to the dealer and it was quoted half of what I thought it would cost. Oh well, one or two more days of getting greasy and a little blood then decision time. Thanks everyone for the help.

Mine is priming after 4-5 pumps and becomes hard at that time. (BTW folks we’re talking mechanical issues so no off color jokes. Know my friends and acquaintances too well🤪).

I have fuel. Storage area is gated with security cameras. Never a theft issue so far. This investigation procedure is time consuming and hard work, but boy it’s fun getting greasy and leaving a little blood here and there. BTW gonna change check valve in Davco at next filter change. They can be an issue.

Ok new wrinkle in the saga. First took all the connections offf battery, cleaned and made sure all was well. Took all grounds off ground block on firewall and cleaned, cleaned all weather pak connections I could get to. This afternoon gonna tackle getting grounds off of starter and cleaning. Now to the new wrinkle. My Davco is in the way of the starter but noticed fuel level is below rim of Davco. Filter was changed last year and was above rim at servicing. Could that be the culprit? Sucking air and resulting in the module confusions? Anyway gonna add some diesel to Davco and see if level stays the same. I have new caps and o ring already as well as ball valve so can fix

Thanks everyone. Plan on spending today at the truck. Will let you know if it’s fruitful.

Daryl, Electronics cleaner and q-tips best way?

Batteries charged and 6 mos old Thanks.

Nothing. Started truck to hitch up. It aired up fine. Idled fine. Released brake to back up and started running very rough and died. All three messages popped up. Checked all grounds at battery. Went home to think, back to truck and when I turned on key, got the J 1939 message. Guess I need to check the resistors but not sure I know where or how.

More to the story. Went back over to truck and engine, brake, light module all starting with “SAE J 1939 data link communication error.” Cannot get DID to download faults while trying to do diagnostics. Any ideas?

Was hooking up to start a trip and truck started fine, aired up, then shut down and got these three messages. Checked battery grounds, recycled key six times, and tried starting. Ran rough for couple of seconds then shut down. Any ideas or suggestions?

Thanks folks.

Love it Larry. Congratulations.

Changing reservoir tank and coolant in my 2006 VNL 780 with Volvo D 12 engine. Mine uses the red extended life. Anyone know what the coolant capacity is on this engine? Having a hard time finding it online and can’t locate my owner’s manual quickly. I’m thinking 11 gallons but not sure.

Just a personal observation and my dealings with Good Sams and other service contract companies they are more than eager for you to pay your premiums but less than willing to cover their agreed services.

Yes it is. Especially if you’ve got good camping buddies. 😁

Rick, you are absolutely correct. Confession: In the dead of winter I was in my detached garage preparing to bend a piece of steel bar. Had it in the Vice, pulled out the old bernz a matic torch and light it. Well hadn’t screwed the nozzle down well and the whole thing erupted in flame. Now I’m in the back end of a garage with the door down, holding a fire bomb! So being somewhat intelligent (debatable), I throw it on the floor and the damn thing starts to roll under my Smart car which was parked in the garage. I managed to get to the garage door opener, open the door, and sweep the bomb out into the driveway before complete destruction. Point of fact, though, a water hose and fire extinguisher will not extinguish a rushing propane bottle fire. Now before anyone asks why not just turn the knob off. Yeah right, the knob was completely melted off. Moral to this confession! If under a truck in a cramped space with flammables close at hand? Better have made peace with your maker or pay someone to do it for you that is experienced. Like Kevin, I’ll choose the later. And Rick, don’t expect Susan to do it, lol!

“ Thanks Rick for your suggestions!!” Kevin, Rick has plenty of suggestions for work that Susan can do. That’s why she’s the experienced one. 😜

Sorry also for your misfortune and I agree totally with Corey. Lots of folks won’t talk about their mistakes but that’s how we all learn.

Other enhancements were, as I said, squaring and truing all brackets so that there were no asymmetric forces exerted on the dog bones. All bushings and spacers were redone with a special HDPE to very snug tolerances. Also all rods were replaced with chrome moly steel. (Folks should know, GeorgiaHybrid is a mechanical engineer and his business did steel detailing for amongst other things, nuclear power plants. The man knows his steels and materials). Finally stop brackets were added so if a set screw came out, the rods remained secure (redundancy). The below pic shows that and also shows the fore and aft thrust bearing was replaced full span to snug tolerance with the same HDPE. Cost was just shy of $1000 for these changes but now am confident my hitch will outlive me. Also please don’t take any of this post as dissing anyone or any company. I just had some trouble with my original hitch that I never wanted to reoccur.

In the first pic you will see the handle mods. Easier to get to and use. Also note the two holes near the attachment where you can drop a pin through as a second stop behind the jaw block. I use a PTO pin from Tractor Supply so it won’t come out. The second picture is an attempt to show you the block welded on where the pin drops through. All these mods were done a a professional machine shop but were GeorgiaHybrids ideas. Also had hitch squared and trued and other upgrades. It’s pretty much bulletproof now IMHO.

I have done it about 10 years ago. I jacked the tank up with a hydraulic jack just enough to get the strap off and “cribbed it” with jack stands and 2x4s front and back to act as cradle. You don’t want the tank to slip off jack and fall especially if full of fuel. Changed strap and reversed process. It was surprisingly easy. On recall I think I waited til tank was low on fuel to do this project just as added safety factor. BTW on further recall, I used two jacks and a span of 2x6 to jack it up to spread the load.

I’ll try to go to truck and get some pics for you in the next couple of days.

I was making a general statement not directed to your incident. In no way was I saying you or wife were slamming into hitch. Just saying in my many years have seen a lot of “hitch slamming “, lol.