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  1. Rayyy

    Please help- P0455 Evap Emission

    2004 5.3L Vortec 4x4 So, I’m driving along, and get a warning ding and a message on the cluster that says “Tighten fuel cap” Once, I pull over… I check the fuel cap, it’s tight. I’ve driven 1/2 the tank, so if it were loose, I probably would have received this message sooner, no? Once, I...
  2. Rayyy

    Anyone running a Pro Charger on. 5.3 or 6.0?

    Wondering if anyone here has experience running a Pro Charger on a 5.3 or 6.0 Vortec? If so, what are your thoughts? What worth it? What is your MPG like?
  3. Rayyy

    Used engine flush, now rear main seal leaking.

    Well, good news… After a few days of dripping after each drive, the leak has completely stopped. There is no more dripping. Something to note… I did add a can of Ceratec with the oil change, so maybe that helped? I have also been doing a lot of highway driving this last week, so not sure if...
  4. Rayyy

    Need help… Crank/no start + Really bad MPG

    Update: After a week of driving, the crank/no start issue is still completely, also the average MPG has crawled up to 12.8 (and counting)… much better than 9.2 I have been doing a lot more highway driving this week, so I hope that’s not the only thing that made the MPG jump like this. I’ll...
  5. Rayyy

    Used engine flush, now rear main seal leaking.

    Wondering if someone can shed some light… I used a can of Liqui Moly engine flush before an oil change, the oil came out goopy and super black, so it seems like it did clean out gunk/sludge from the engine. However, now my rear main seal is dripping big time, and I’ve read disclaimers that...
  6. Rayyy

    Need help… Crank/no start + Really bad MPG

    Have you checked the fuel pressure on yours? Mine would also start when cycling the key or leaving it on ON for a few seconds before cranking, but when I measured my fuel pressure at the fuel rail, it was dropping super quickly even when cycling the key, not holding prime at all. I replaced...
  7. Rayyy

    Need help… Crank/no start + Really bad MPG

    On my 2004, there is no exterior fuel filter, apparently it is inside the gas tank. Does that means it’s part of the fuel pump? Or is it deep inside there separate from the pump?
  8. Rayyy

    Need help… Crank/no start + Really bad MPG

    That's a great idea. Would I need a special fitting to accomplish this? I shall look into this.
  9. Rayyy

    Need help… Crank/no start + Really bad MPG

    I know fuel pumps failing are very common on these engines, but how about leaky injectors? And if it were leaky injectors, wouldn’t there be a rough idle or smell of gasoline in the engine bay? Weak fuel pump can cause MPG issues too, right? I can’t wait to throw a fuel pressure gauge on the...
  10. Rayyy

    Need help… Crank/no start + Really bad MPG

    Ah okay, so if your Trailblazer was operating at 50% efficiency of MPG (like mine is), that wouldn’t concern you? The leaky fuel pressure regulator fixed the no start issue? I’m wondering because low fuel pressure could very well impact the MPG, no?
  11. Rayyy

    Does any use a Fumoto oil pan drain valve?

    Nice! The latest one is a true M-Sport? 6spd? Here is mine.
  12. Rayyy

    Need help… Crank/no start + Really bad MPG

    How is the MPG? I don’t believe the 02 had the Average MPG in the cluster… but, there is an app called Fuely, which calculates for you and just requires to input odometer/fuel at each fill up.
  13. Rayyy

    Need help… Crank/no start + Really bad MPG

    What did you replace? The fuel pump?
  14. Rayyy

    Does any use a Fumoto oil pan drain valve?

    Which 540i? Legendary E39?
  15. Rayyy

    Does any use a Fumoto oil pan drain valve?

    Ah sorry! Missed the part about the Femco. I actually looked at those too… I also really liked the Femco, also liked the Valvomax and Stahlbus ones because they use a screw cap (and look well built), but they use a check ball design, which requires a proprietary adapter/hose to release the oil…...
  16. Rayyy

    Does any use a Fumoto oil pan drain valve?

    I was going to order the adjustable one, it uses a banjo bolt design, which allows you to point the direction perfectly instead of where it lands once tightened down. And because of the banjo bolt, it already points down at a 90 degree angle. Does yours point perfectly downward?
  17. Rayyy

    Does any use a Fumoto oil pan drain valve?

    It’s just recessed ever so slightly, but wanted to assure it didn’t interfere at all with the valve (photo from 1AA) Is the 90 degree elbow version also adjustable, so you can tighten it well and also position it perfectly downwards?
  18. Rayyy

    Does any use a Fumoto oil pan drain valve?

    Does it fit well on its own into the recessed oil drain plug on the NBS? Or does it require the extension adapter?
  19. Rayyy

    Need help… Crank/no start + Really bad MPG

    2004 Vortec 5.3 4x4 It never, ever starts on first try. Cranks, but no start. However, starts right up on the second attempt every time. Also, truck seems slightly sluggish. It still pulls at WOT, just seemingly not at 100% power. MPG is a wopping 8.1MPG (confirmed by calculating manually...
  20. Rayyy

    HELPPP O2 sensor problems after swap

    Denso o2 sensors are the same for both up stream and down stream, correct? Denso part number 234-4668 ? (To fit 03-05 Vortec 5.3)
  21. Rayyy

    Can I wire in dash cam from double power source?

    My cam is a Vantrue N2… I do have a hardwire kit fit it, and will look into whether it’s already designed that way. Good call.
  22. Rayyy

    33" spare tire fit

    What size tire is that?
  23. Rayyy

    Possible to replace wheel studs without taking off calipers?

    Is this the type you saw? I have this one and was going to use it to install the new lug studs, which are slightly longer to accommodate the 10mm spacers I’d like to install. I don’t want wheel adapters, which seem like they have more fail points than slightly longer studs and spacers.
  24. Rayyy

    Help with e-fan swap

    Thanks!!
  25. Rayyy

    Help with e-fan swap

    Wondering which harness plugs into which fan?? One fan has 5 blades, while the other has 7, but both plugs are the same. One harness plug has yellow wire and black wire, while the other has a green wire and a black wire. Which one goes to the 5 or 7 blade fan??

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