The advisor said it was a catastrophic failure which required a new high pressure pump, filter housing, all 8 injectors and I should get the truck back in a week. Whenever I get the truck back I will advise further.Brettster, it would be great to hear more detail on "catastrophic failure" of the fuel system. I wonder if it was the high pressure pump? Maybe when you get your truck back you could relay the tech notes from the paper work?
I don't know why I do this to myself, but I plugged in the code reader to check my truck this morning and it had three new codes related to intake air temp sensor 3 and MAP sensor (P00EB, P0106, P0108) to go with my old friend P026D. I'm guessing/hoping that the tech was banging on the EGR valve to see if it would unstick and that dislodged a bunch of soot onto the MAP and IATS3. I am taking the truck back in on Wednesday when the tech is back form vacation, this ought to be a doozy.
Maybe I should sell the truck and boat and by a sweet resto-mod
Yeah, I doubt it too but ok.....I had the oil changed in mine today and the stabilitrak light came on leaving the bay, no kidding.Mine went back in for P026D. They checked the EGR valve and it was fine. GM Tech told them to check the fuel pressure sensor wiring harness, that was OK. Then check the MAP sensor. They said it was very dirty, but I clean it all the time, so they changed it and drove 4 miles, no P026D so I got the truck back. According to the email from GM Tech, if the code comes back again, they are to change all eight injectors.
I will be shocked if the new MAP sensor solves it.
Everythings back together. 0 rail pressure/no start. Awesome!Update on my situation.
I spoke with the tech today in person since its been over a month since the truck was dropped off. I saw the pump myself and it didn't explode but its wearing out sending metal everywhere which ended up clogging the injectors amongst other things. Unlike the CP4, these new Denso units don't seem to explode and you can still drive for awhile without notice until it gets really bad like mine did.
I should be getting the truck back tomorrow and all should be sorted. The procedure called for a new pump, all injectors including the piping (one time use) and a flush of the entire fuel system. Needless to say since I'm 2 months away from the warranty expiring that I will be extending it via GM. The good news is both the injectors and pump have had revisions.
Oh no what the hell is going on
Lol, he ate that one.No pressure at the rail. I asked the tech if the new pump had a key in the key way and needless to say he took the pump back out. I also stated they need to check the lift pump as well.
Lift pump took a crap as well. Swapped a new one in and it started up no problem.No pressure at the rail. I asked the tech if the new pump had a key in the key way and needless to say he took the pump back out. I also stated they need to check the lift pump as well.
Not back yet! Last I heard it was on a test drive.I am glad they got your truck fixed, but a month to do the job is a head scratcher.
Did they ever say what pointed them towards the high pressure pump? Was it just the brass bits in the fuel filter or was fuel pressure/fuel flow data?