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  1. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Just want to make sure I worded that correctly. It HAD a crankshaft position sensor code.
  2. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Sounds good, it sounds like something that could be good for when I try to get my S10 running with the LS in it. Especially when both trucks are being driven and inevitably have issues.
  3. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Yeah it fires up on either sensor. The reason I swapped it out was because my code reader that I currently have threw a crankshaft position sensor code.
  4. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    I don't think I do... I have the Foxwell NT301 tool. That would explain why nothing changed when I ran around the block again. Is that something a shop would need to do for me?
  5. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Ok so I got it running and put some new fuel and a fuel additive to get everything to play nice. I still have the issue where the battery isn't being charged using an alternator that is confirmed working, but after sputtering around for about 10 minutes I got it to throw a crankshaft position...
  6. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    OK! Good news! I got the Yukon to fire up and drive, it doesn't seem to bog down or die anymore, but it is hesitant under acceleration, I should test to see what my fuel pressure is running while the engine is idling right? But I ran into another issue, I took my known good alternator, and now...
  7. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    It has been sitting for about 2 years, I made the dumb mistake of running the truck on old fuel and I may have gummed up the injectors. I tried starting it with some engine starter with no success.
  8. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    I checked to make sure that everything was clean, contacts are clean, all connections look pretty good. I know engine grounding can cause issues, but I can't find a comprehensive list of where all of those points would be on this truck. I did give the wiring harness a good look over and I...
  9. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Sounds good, as I test things I'll update this thread since I have yet to see a thread with a complete ending! Thank you for the help!
  10. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    I'll give the alternator a shot, the battery is brand new and fully charged (got it replaced under oreilly auto warranty). I have a spare alternator lying around that was tested good. Thank you for the help!
  11. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Yeah the fuel pump runs, did a pressure test and got 49 pounds of pressure. I get a nice spray of fuel when I press on the Schrader valve. The plugs aren't wet with fuel, but when I try to get the engine to start with an engine starter. I don't get results either. I'm about to swap spark plug...
  12. 2

    2004 Yukon XL (Non Flex) cranks but doesn't start.

    Hello! I have been working a 2004 GMC Yukon XL today and have seem to run into a bit of a snag. It had been sitting for a bit and when I initially fired it up and ran ok, it would bog down under acceleration but would "drive" fine at idle. As I continued to run the vehicle it would run worse and...

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