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  1. donjetman

    Need Some Parts Buying Advice

    March of 2020 I purchased and installed a new waterpump from amazon - $74. OAW brand # G9670, its still going strong. I run NAPA orange Dexcool coolant.
  2. donjetman

    2013 Yukon Hybrid Front Differential

    RPO code in the glove box. Mine is GU6 = 3.42
  3. donjetman

    Want to take my 2010 Yukon XL Denali with 180,000 miles for a family trip from Michigan To Florida - Can you help me make this a success!

    @bobby2175 if its that loud sounds like lifter problem to me. 3 of exhaust manilold bolts (corners) were gone at 130k miles when we bought the truck 5 yrs ago. Not noticeable at idle. Installed 3 bridge clamps. Still going strong at 192k.
  4. donjetman

    Thoughts on cheap oil?

    :peace::thumbsup::favorites37:
  5. donjetman

    2013 Escalade ESV Next BIG adventure: Cooling system refresh, Big 3 Electrical upgrade, Reseal intake, and VLOM mod...

    Here's another mod @iamdub came up with for those folks doing a full AFM/DOD delete: https://www.tahoeyukonforum.com/threads/another-genius-idea.124097/
  6. donjetman

    Thoughts on cheap oil?

    Oh yeah. When I was a teen I worked at full service gas stations pumping gas, cleaning windshields, checking tire pressures, checking under the hood and thus adding oil and used those spouts to ********* the metal 1 qt oil cans. :waytogo:
  7. donjetman

    Catch can flow discussion

    They are trying to sale something you don't need on the (clean) passenger side. PVC system air flow on the passenger side is clean filtered air via plumbing and flow "INTO" the passenger side valve cover. No catch can needed on that side. Where the catch can is needed is on the...
  8. donjetman

    Want to take my 2010 Yukon XL Denali with 180,000 miles for a family trip from Michigan To Florida - Can you help me make this a success!

    I my case? No, didn't change a thing. Pulled up to the pumps, put 5 gal of e85 then filled it up the rest of the way with 91/93. Saved about $5/fillup at the time. Same MPG and performance (conservative driving).
  9. donjetman

    Oil on spark plugs - misfiring p0300

    On the 07 and later engine they don't have the ole PVC valve. The complete valve cover is the PVC.
  10. donjetman

    Oil on spark plugs - misfiring p0300

    ? Myself (old hobby mechanic) and a couple of pro mechanic friends of mine have looked at it and haven't a clue as to why, what, etc.
  11. donjetman

    Want to take my 2010 Yukon XL Denali with 180,000 miles for a family trip from Michigan To Florida - Can you help me make this a success!

    Also, with our Denali the lower the octane, the lower the gas mileage.
  12. donjetman

    Want to take my 2010 Yukon XL Denali with 180,000 miles for a family trip from Michigan To Florida - Can you help me make this a success!

    I drive conservatively and don't tow. Our 6.2L isn't a flex-fuel vehicle. I've run 87 octane for a yr, 89 for a yr, and 91/93 for the past 2 yrs. I even done 20-30% mix of e85 with unleaded. Runs great on them all. But I got knock message a time or 2 when running 87 & 89. Here a data chart...
  13. donjetman

    cruze control 2008 xl 5.3

    Brake switch got mine working again
  14. donjetman

    Oil on spark plugs - misfiring p0300

    Your engine issue could be counterfeit spark plugs? Or clogged injector? I may have recently encountered one of these. I have a 1951 Chevy pickup truck with a low mileage 5.3L engine out of a 2008 GM pickup. It only has 2200 miles since truck was completed 10 yrs ago. Lately it started missing...
  15. donjetman

    Oil on spark plugs - misfiring p0300

    You might want to put a large 20 oz can (or more) of SeaFoam in the gas tank. Stuff sometimes works miricles. BG brand 44K fuel system cleaner is awesome too.
  16. donjetman

    Oil on spark plugs - misfiring p0300

    Top is the original (bad design) valve cover w/130k miles. Bottom is new updated design.
  17. donjetman

    Oil on spark plugs - misfiring p0300

    You probably don't have an ignition problem. How do I know? Checkout the thread I did: https://www.tahoeyukonforum.com/threads/sparkies-no-beno.108579/ As ugly as the plugs were, it ran perfect, and no codes. My guess is you have a bad or clogged fuel injector. Read this GM technical service...
  18. donjetman

    Circle D Specialties Acquires Reid Racing

    https://www.epartrade.com/industry-news/circle-d-specialties-acquires-reid-racing-inc-de67565f
  19. donjetman

    Trans Pan removal

    I remove the exhaust Y-pipe to remove the pan on mine. Sometimes the exhaust manifold bolts can be a nightmare (rust/corrosion) to get off.
  20. donjetman

    Oil on spark plugs - misfiring p0300

    Fuel injector can cause misfires too.
  21. donjetman

    Potential abnormal oil pressure 2014 Yukon

    Viscosity makes all the difference
  22. donjetman

    Transmission Codes P0842, P0872, P0877**UPDATE**

    Sonnax info and video https://www.sonnax.com/tech_resources/548-how-to-rebuild-tehcm-pressure-switches-in-gm-6l45-50-80-90-gen-1-6t70-75-transmissions
  23. donjetman

    Transmission Codes P0842, P0872, P0877**UPDATE**

    07 Denali w/6L80 tranny and has 191k miles, is shifting okay to me, but I borrowed a MAC Tools code reader and found codes for the tranny. So I think its time to replace the TEHCM pressure switches with seals & membranes, Sonnax kit # 124740-70K and Sonnax tool kit # 124740-TL70. @NickTransmissions
  24. donjetman

    Want to take my 2010 Yukon XL Denali with 180,000 miles for a family trip from Michigan To Florida - Can you help me make this a success!

    Assuming you have the 6L80 trans? I'm a DIYer so I proactively installed a Precision of New Hampton torque converter, part# P4646, 5 yrs and 61k miles ago when the tranny had 130k miles. I had my tranny etc out to do a rear main seal job. Paid $218 locally for it and no regrets. I've done 2 used...
  25. donjetman

    P0171 & Check Engine Light, No Misses or issues

    3 drive cycle's so far and NO CODE :peace:

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