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  1. donjetman

    P0300, Random misfiring at idle, Counterfeit Spark Plugs?

    07 Yukn Denali 6.2L w/193k miles. 5+ years ago I bought a set of AC Delco #41-962 spark plugs from amazon. 2.5 yrs and 22k miles ago I installed them gapped at .040". Recently, I've been getting a P0300 code and the engine has had a misfire at idle. It runs great otherwise. It doesn't set a CEL...
  2. donjetman

    2007 6.2 Denali 230k smoke on start up

    Do you know if the "improved" driverside valve cover has been installed on your engine? as decribed in this GM technical service bulletin: https://f01.justanswer.com/ebrock63/cec66346-04c1-48e0-98a6-74c35af2c84e_2014+Engine+-+Oil+Consumption%2c+MIL+ON%2c+Engine+Runs+Rough.pdf Installing a...
  3. donjetman

    6.2 swap thread

    what are caddy lifters? part # ?
  4. donjetman

    Oil leak. Not rear main

    Because that is what the TSB said to do.
  5. donjetman

    Oil leak. Not rear main

    5+ yrs and 63K miles ago I DIY: Performed GM TSB 10-06-01-008M, and used Gunk Motor Medic $5 to do the piston combustion chamber soak GM updated valve cover driverside – GM# 12570427 - $117 Oil pan gasket – GM# 12612350 - $36 Oil pickup o-ring – Felpro 72401 or GM 12584922 - $9 Torque Converter...
  6. donjetman

    Oil leak. Not rear main

    you can get it on amazon for $13
  7. donjetman

    P0307 2014 Suburban

    I heard that the AC Delco spark plug # 41-110 has been superseded by # 41-162 for Gen4 LS engines.
  8. donjetman

    GM converter upgrade question

    This is what I installed in my 130k mile 6L80 5+ yrs and 64k miles ago: https://gopnh.com/Search-Results?Partnumber=4646 <$220 then Still going strong.
  9. donjetman

    So this isn’t good, right?

    Yes it looks overfull. Tranny has a vent hose. It will be wet near its exit. Tranny fluid (atf) it suppose to be red. I don't think tranny fluid (atf) coming out its vent hose would be that high up or that far forward. You probably have multiple leaks.
  10. donjetman

    Yet another Yukon with engine tick and low oil pressure

    Is this with the extra 2 qts and parked nose down?
  11. donjetman

    Yet another Yukon with engine tick and low oil pressure

    correct, it's just to submerge the oil pickup oil ring under oil so it can't suck air if it's cracked and/or broke. Then drain out 2 qts and go about your business.
  12. donjetman

    Coolant Surge or Recovery Tank Hoses?

    Rock auto
  13. donjetman

    Coolant Surge or Recovery Tank Hoses?

    I ordered #17 22827733 THX
  14. donjetman

    Coolant Surge or Recovery Tank Hoses?

    I found the larger bottom pt#, Dorman 626-553. Still need the top?
  15. donjetman

    Coolant Surge or Recovery Tank Hoses?

    07 Yukon Denali. I'm installing a new coolant surge/recovery tank. I need the 2 molded? hoses (part #s) that connect to the coolant surge/recovery tank. The smaller (.47"id) top hose goes to the radiator. The larger (1"id) bottom hose goes the the themostat housing area. I assume they are...
  16. donjetman

    new 2009 Tahoe LTZ owner

    throttle body
  17. donjetman

    Yet another Yukon with engine tick and low oil pressure

    did you add 2 qts of oil? then park and run it with the front end a lot lower than the rear end.
  18. donjetman

    The DOD tick finally got to me

    I would get it blue printed (everything checked with micrometers).
  19. donjetman

    '08 Tahoe 4x4 Motor Mount Education

    with the front tires off the ground, get under the vehicle and pull/push up and down on the front pinion and see if there is any movement at the front differential mount bushings.
  20. donjetman

    2012 Yukon 6.2 Engine Noise

    do the same to the other side/bank of the engine.
  21. donjetman

    new 2009 Tahoe LTZ owner

    get a better code reader.
  22. donjetman

    '08 Tahoe 4x4 Motor Mount Education

    twist the driveshafts back and forth to see how much slop is in the transfer case
  23. donjetman

    '08 Tahoe 4x4 Motor Mount Education

    easy movement at the bushings of the front differential mounts.
  24. donjetman

    Public Service Message - AFTERMARKT O2 sensors SUCK!

    in April of 2022, at 174k miles on our 07 Denali w/6.2L, I did not disconnect the battery, I did not need to do a relearn, I changed all four O2 sensors w/two Genuine GM# 213-3533 - $58ea, & two Genuine GM# 213-3538, $53ea; all from amazon. I've put 19k miles on them without issue.
  25. donjetman

    '08 Tahoe 4x4 Motor Mount Education

    The infamous clunk/klunk sound when transitioning off then on the throttle quickly and getting under it and prying/pushing/pulling on the front differential/driveshaft etc. The next task I'll do to reduce the clunk/klunk will be rebuilding the transfer case, a <$300 DIY job.

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