Recent content by Pressureangle

  1. Pressureangle

    P0446 Code on Wife's 03 Z71

    Waking the dead thread, Persistent/intermittent 0446 DTC. Mom's car, '04 Yuk XL 8.1. Shop charged 3-4 times trying to resolve it, $350 charcoal canister, etc. Put a little silicone grease on the inlet of the purge valve and Presto! intermittent/tiny leak gone.
  2. Pressureangle

    leaking piston rings: seeking advice on process

    Tough one. Consider that you have a bad injector on that cylinder, which would explain the rough running, excessive carbon buildup on the ring lands (detonation blowing the oil off the cylinders and overheating the rings, causing oil from below to coke up) and possibly collapsing the piston...
  3. Pressureangle

    lifter info

    I actually used their least expensive ones, after some long discussion. Still higher quality than next best. They manufacture a lot of the super-high end race lifters under private label.
  4. Pressureangle

    Exhaust Manifold Gaskets/Lifter Tick

    Simple As. http://catalog.remflex.com/
  5. Pressureangle

    lifter info

    I just suck up the price pain and use Morel. https://straubtech-morellifters.com/
  6. Pressureangle

    2005 Yukon feels loose on the freeway

    You didn't say how many miles on it, so absent anything obvious I'll toss out some possibilities. My '04 2500 is sensitive to tire pressure. The door says 80psi rear, 50 psi front but with the pressure that low in front it feels mushy. Your 1500 may like higher pressure than door specs. Easy...
  7. Pressureangle

    Accelertion vibration 30-50

    Yes, absolutely possible. Also if you have a center support bearing with 2-piece driveshaft, check it very carefully.
  8. Pressureangle

    2005 Yukon feels loose on the freeway

    Your airbags are deflated? Yes, this can cause wandering because the lowered rear end changes the caster of the steering. Also, check your steering shaft for play in the slider between the column and box.
  9. Pressureangle

    120 Volt Outlet Jumper Suggestion

    LOL I still have 2 or 3 of those around that are probably older than I am.
  10. Pressureangle

    More HVAC fun. Anyone seen this?

    ah yes, I just acquired an OTC Genisys Evo scanner, but it's my first non OEM/PC based system ... I guess I'm going back to school for a bit. Is there a good resource for the actual locations of the components- all the actuators and their zones, temp sensors, etc? FWIW the rear system works as...
  11. Pressureangle

    More HVAC fun. Anyone seen this?

    Sooo... '04 Yukon XL 2500 SLT. Auto climate control, split front with rear on upper console. It's had intermittent fixes through it's life, and until recently was good; this issue began this past summer when I acquired it from family after it had sat without driving for a couple years. Sunroof...
  12. Pressureangle

    L87 6.2: “NHTSA to investigate potential for engine failure in nearly 1 million GM trucks, SUVs”

    I heard last fall from an inside source who overheard (meaningful pay grade/position persons) say, 'it doesn't really matter, we're going bankrupt again in 5 years'.
  13. Pressureangle

    #5 and #7 misfire

    You need at least a compression check, and preferably a leakdown test. Head gasket is suspect. All of your symptoms support a head gasket failure, and one of the key diagnostics for head gasket failure is that all of your other efforts have not made any change.
  14. Pressureangle

    SiriusXM issue

    Sounds like GM got kickbacks from SXM advertising. Not surprised. My experience in both my aftermarket SXM receiver and my factory '04 SXM is that new cell towers interfere so much with reception that I'm considering abandoning SXM altogether.
  15. Pressureangle

    Bad mpg?

    Man you love to step in it. Piston area, man, piston area. Lower pressure + larger area =.... equal.
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