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  1. W

    Turn signal turns on hazards

    I have not. But it stopped acting wierd after a few days. I went crazy flipping the switch up and down a lot and it stopped… maybe it’s the switch. As for now, if it doesn’t come back I’m not worried about it.
  2. W

    Bad fuel Pump? (Solved)

    Delphi FG0811
  3. W

    Turn signal turns on hazards

    Right turn signal works normally. Left turn signal turns on hazards. All lights work. All normal lights, no LEDs. Grounds are fine. Temped to think it’s just the flasher. Just figured I would post in case anyone has had a similar situation and found an easy fix. I tried searching but couldn’t...
  4. W

    Bad fuel Pump? (Solved)

    Well as my father would say “any car over 20 years old is a project car, whether it is or not.” I daily drive it and have no plans to sell, so not a big deal. Not sure if your dislike is from a structural standpoint, corrosion or whatever. I thought them all over and settled on it just being...
  5. W

    Bad fuel Pump? (Solved)

    New fuel pump is in and truck fired right up! Now I just have to patch the hole I cut to get to it…easier than wrestling with a 3/4 full tank by myself.
  6. W

    Bad fuel Pump? (Solved)

    When I removed the vacuum line from the pressure regulator it ripped the boot on it. So I got another one and figured I would try a new regulator as well. They came in today. Replaced the pressure regulator and vacuum line. Still no start, but every time I went to start there was a stumble...
  7. W

    Bad fuel Pump? (Solved)

    Tried starting with the fuel pump jumped. Bit of a stumble but still no start. Tried removing vacuum line from pressure regulator. No change at all
  8. W

    Bad fuel Pump? (Solved)

    Key and jumping cause pump to run and give pressure. When key to “on” pressure builds to about 50psi. Once you try to start the truck pressure drops to about 40. When key is turned off, pressure begins to steadily fall. Haven’t tried starting with pump jumped though, might try that
  9. W

    Bad fuel Pump? (Solved)

    Like the battery or ECU
  10. W

    Bad fuel Pump? (Solved)

    I mean that does sound like it. But I feel like all hard starts kind of sound like that? I spent the extra money after reading on here and when I did the rebuild I got OEM sensors. The thing that’s got me leaning toward fuel pump, is its obviously been a problem in the past. The random fuel...
  11. W

    Bad fuel Pump? (Solved)

    Would fuel pressure regulator on the rail be a culprit? I have not changed it out nor do I know how to test it.
  12. W

    Bad fuel Pump? (Solved)

    The hard start happened whenever it felt like it, hot or cold didn’t make a difference. The hard start happened more often than not. Might need a new lock ring. I’m holding out hope I don’t. It was a Texas plains truck and now in the NW where it gets washed regularly. There is almost no rust on it.
  13. W

    Bad fuel Pump? (Solved)

    Yes, I replaced cam and crank sensors. Mostly because they fell apart getting them off. Scanner shows them working though. That thought definitely ran through my head though.
  14. W

    Bad fuel Pump? (Solved)

    New fuel filter with maybe 1k on it. Relay is brand new and good. Fuse is good. I forgot to mention that I have an occasional issue with the fuel gauge, where it reads empty when I know it has fuel in it. This issue is very intermittent so I mostly forget about it. I went ahead and ordered...
  15. W

    Bad fuel Pump? (Solved)

    Mine is flex fuel. Thanks for the tip
  16. W

    Bad fuel Pump? (Solved)

    Correct none blown, and due to other electrical issues almost all grounds have been found and cleaned up.
  17. W

    Bad fuel Pump? (Solved)

    I dont see any signs of leaking outside the system. Nothing coming out exhaust as if flooding from leaky injector(s). I figure if injectors were leaking I would still at least get a bit of a start.
  18. W

    Bad fuel Pump? (Solved)

    (Edit) Solved, new fuel pump fixed the issue. (Edit… to the Edit) A week went by of normal starting. Then the hard start acted up again. Only thing I hadn’t replaced is the cam sensor, it tested ok. Replaced it with GM genuine cam sensor and no more problems. 2003 GMC Yukon XL 1500 5.3 Back...
  19. W

    2004 tahoe whining not serpentine belt tensioner or idler pulley

    I did the same thing you did. Replaced belts and upper and lower tensioner, plus the idler pulley. I had the same issues, whine at start up and idle then went away while driving. Turned out to be the bearing on the alternator pulley. Also, if you replace belts, do your research and make sure...
  20. W

    U1000 Code - Battery Light On - Intermittent starting Issue

    2003 GMC Yukon XL 1500 - Fresh Rebuilt 5.3 - 111,000 miles - New Battery - New Alternator - Grounds Cleaned - Did find rats nest in under hood fuse box and repaired wiring there I’m not sure if these are all related or coincidence. Since rebuilding the engine I have had an intermittent...
  21. W

    Will only switch out of 2wd in neutral

    We’ll I woke up this morning and the lights on the 4x4 switch were out and message center immediately said service 4x4. Soo looks like it’s electrical? I still haven’t found anywhere that has a code reader fancy enough to read tranny codes.
  22. W

    Will only switch out of 2wd in neutral

    Ok, I’ll get there when I can. Tried swapping out the switch and it made no difference, but that’s easier than swapping tires around. When I did get it to swap into 4Auto it really sounds like it’s binding up. Not sure if that’s because of the tires, it needs oil in that front diff or...
  23. W

    Will only switch out of 2wd in neutral

    Never would have thought that would matter that much. So basically just swap front for back? Also, tires are only that way because when I bought it front had a little life left, and rear were completely bald. Didn’t have money at the time for all 4 and I hate the stock rims, so I planned on...
  24. W

    Will only switch out of 2wd in neutral

    Right, I don’t exactly have a problem swapping into 4HI and 4LO and back to 2wd. As you said that part is working properly. But shifting into 4Auto I shouldn’t have to be in neutral, but that’s the only way I can get it to work now. I used to have an 01’ 2500 with the 6.0 and it had 4Auto. It...
  25. W

    Will only switch out of 2wd in neutral

    Thank you, I’ll try and get those codes checked and cleared. Will a regular OBD2 scanner work or do I need one of those fancier ones All those grounds are good except the one in dash I have not checked. Is there anywhere to see more graphics like the one you sent? The zone map is helpful in...

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