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  1. donjetman

    Valley Cover, Crank Pulley, etc

    PS: none of the valley cover bolts were lose.
  2. donjetman

    Valley Cover, Crank Pulley, etc

    Intake ports were pretty nasty. Before and after cleaning them pics
  3. donjetman

    Valley Cover, Crank Pulley, etc

    Got the intake off and valley cover off. I will put on a new valley cover and new pressure sender, and will clean the intake manifold inside and out before reinstalling.
  4. donjetman

    Fuel Pump Access Door in floor of 2007-2014 models

    yea, that helps too :waytogo:
  5. donjetman

    Valley Cover, Crank Pulley, etc

    Got the pulley and cover off. Changed the o-ring and added a 2nd bolt waitin on parts and have a lot of cleaning to do.
  6. donjetman

    Valley Cover, Crank Pulley, etc

    All 8 were like this. It didn't have a miss, and it wasn't throwing any codes or CEL.
  7. donjetman

    Valley Cover, Crank Pulley, etc

    Changed out the 5+ yr young o-ring while I'm in there. It was still soft and pliable, but losing its round cross section shape. Installed a Mahle # B32790. Pickup screen was/is clean.
  8. donjetman

    Valley Cover, Crank Pulley, etc

    Today, 5+ yrs and 68k miles later at 198k miles, here's what the valve cover and oil pan look like. Valve covers are still clean and the oil pan had a little slushy carbonous material from the VPB "Restore" motor oil doing some cleaning, but was otherwise clean. The debris easily cleaned up with...
  9. donjetman

    Valley Cover, Crank Pulley, etc

    Good eye. In 2018 when we purchased it w/130k miles. I immediately installed a catch can, did TSB 10-06-01-008M including a new improved GM driverside valve cover, did a extra long piston combustion chamber soak, and installed relief valve deflector. All 8 cylinders had stuck piston rings...
  10. donjetman

    Valley Cover, Crank Pulley, etc

    Taking things apart
  11. donjetman

    Valley Cover, Crank Pulley, etc

    07 Yukon Denali non-AFM 6.2L w/198k miles today I'm finally getting around to changing the valley cover & gasket, oil pressure sender, crankshaft pulley & seal, and timing cover gasket. If the timing chain and/or tensioner are worn I'll change them, and the cam position sensor too. I've had...
  12. donjetman

    Fuel Pump Access Door in floor of 2007-2014 models

    I dropped my tank recently and it was easy. I only had 3 gals in the tank and there is no rust on our Denali.
  13. donjetman

    Is my front diff toast?

    not good :(
  14. donjetman

    When the ac is running I don’t like the noise

    for me, in the 90s (pre internet) I bought this book, a gauge set, and a vaccuum pump. These days, its searching for pdf files, and utube videos.
  15. donjetman

    When the ac is running I don’t like the noise

    I've been dealing with ac Freon ever since I paid someone BIG $$$$ a time or two (20+ yrs ago). Has saved me a small fortune :)
  16. donjetman

    2007 Yukon Timing Chain Tensioner Broke

    If valve(s) got bent a compression test will tell the tale.
  17. donjetman

    Could a techm fix my symptoms?

    @NickTransmissions
  18. donjetman

    AFM disable or lifter issue 2012 PPV TAHOE

    Its a bandaid for sure
  19. donjetman

    Kooks Cats for High HP

    https://www.lsxmag.com/tech-stories/going-green-adding-kooks-h-o-cats-to-a-zl1-and-making-800whp/
  20. donjetman

    Changing Fuel Pump/Sending unit, Bosch ????

    I'm keeping the ole Bosch pump I pulled out for a spare. I still haven't figured out the wonky fuel gauge. I'm not to worried about it since the DIC has a fuel totalizer.
  21. donjetman

    Ready to pull trigger on Derale trans cooler - need advice

    yep, been there done that :waytogo:
  22. donjetman

    Changing Fuel Pump/Sending unit, Bosch ????

    Short story: Problem = fuel gauge is still wonky w/CEL P0463 persists after installing new Bosch # 67442 fuel pump assembly. Vehicle still runs great. Long story: Once I dropped my tank and removed the pump, it looked obvious to me that the pump had been changed before I purchased the...
  23. donjetman

    Shell Rotella 15w-40 motor oil

    T4? T5? or T6? 15w40 is not a good viscosity for winter. If there ie a 5w40 or 0w40? this would be better viscosity for winter time.
  24. donjetman

    Changing Fuel Pump/Sending unit, Bosch ????

    Is this the original ??? Bosch # F00hkoo149. 2007 Yukon Denali 6.2l L92 Purchased the vehicle wo/records in 2018 w/132,000 miles. I'm having fuel gauge issues so I'm changing the complete assembly.
  25. donjetman

    Bought core block

    @lspann3525 Pay to have a GOOD machine shop polish the crank. They should start at the bad area(s) ti see if it polishes out.

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