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  1. donjetman

    This ACdelco Engine air filter with 27,500 miles, 4 years old..

    Air filters become more efficient as they fillup with dirt. The downside, if all out performance is what you're after, is they become more restrictive. If you want to know how the air filter is doing send in an oil sample for analysis.
  2. donjetman

    Is this just an oil filter gasket leak or is there something else that would pool oil around the oil filter?

    :banned:
  3. donjetman

    2012 Yukon Denali 6.2. Poor gas mileage, no codes thrown and no check engine light

    x2 what @wjburken said. idling is a mpg killer.
  4. donjetman

    codes

    vacuum leak??
  5. donjetman

    Thumping in slow, tight turns - CV axles already changed...

    A tire?
  6. donjetman

    AFM Delete and California Smog

    Here where I live in TX not only did the state get rid of smog test that was in only the big blue cities, but I hear tale the safety inspection is going away. :waytogo: :peace::Caffeine::D
  7. donjetman

    Head gasket(s) + rear main seal jobs

    Did my rear main in 2018 when it had 130k miles and today its still dry as a bone with 190k miles. Here ya go with a lot of pics: https://www.tahoeyukonforum.com/threads/rear-main-seal-job-pan-etc-07-yukon-denali-6-2.108334/
  8. donjetman

    Range of cost for rear main seal job at a shop?

    Did my rear main in 2018 when it had 130k miles and today its still dry as a bone with 190k miles. Here ya go with a lot of pics. https://www.tahoeyukonforum.com/threads/rear-main-seal-job-pan-etc-07-yukon-denali-6-2.108334/
  9. donjetman

    2011 Burb - FML - What would you do here?

    I've had 100% satisfaction with local driveshaft shops too, but only for the past 50 yrs :)
  10. donjetman

    Question about drive train slop

    Maybe a little when transitioning on and off the throttle. Most of my Klunk was cured when I changed the frt diff mounts. https://www.tahoeyukonforum.com/threads/no-more-klunk-yeah.134250/
  11. donjetman

    Question about drive train slop

    My 07 awd has always had a lot of slop, most of which is in the transfer case.
  12. donjetman

    2011 Burb - FML - What would you do here?

    Make sure the tranny isn't over filled w/atf. And this is why I'm a DIYer.
  13. donjetman

    low oil PSI when passing

    Do you have some oil consumption going on? GM came up with TSB technical servive bulletin: new improved valve covers ot the 07-08 and 09-11 engines to lessen oil consumption. Read it here...
  14. donjetman

    low oil PSI when passing

    change you oil pump pickup tube o-ring
  15. donjetman

    I was Wrong - PCV and Fresh Air

    I meant to post this in the 2007 to 2014 area :banghead:
  16. donjetman

    I was Wrong - PCV and Fresh Air

    The PVC system does take in filtered fresh air. On modern fuel injected engines the source is from downstream of the MAP sensor. On a healthy engine there isn't much blowby volume, so a fresh air source is included in the PVC system to help increase air flow volume to carry away harmful vapors...
  17. donjetman

    07 Valley cover

    The guy in the video used an air hammer to get the bad one to unstick. He wasn't being successful with the hammer.
  18. donjetman

    07 Valley cover

    Don't put new lifters on a damaged cam or you'll be back in there sooner than later.
  19. donjetman

    2017 Tahoe/ICT Valley Cover has no PCV port, how do I run the PCV now?

    I just had the intake, valve covers, etc off my 2002 C5 vette last week to install a catch can and to clean things up. There isn't a air line from the airbox going to the valve covers, intake, pvc system.
  20. donjetman

    2017 Tahoe/ICT Valley Cover has no PCV port, how do I run the PCV now?

    If you say so, but I'm not buying it. Every pvc system I know of uses intake vacuum to pull gasses "from" the crankcase only. Metered leak(s) "into" the crankcase? What would be the point of that?
  21. donjetman

    Noise When Towing

    We had a 4L60 in our 02 Surburban and it needed more gears too.
  22. donjetman

    afm 2009 denali 6.2 no compression cylinder 7

    Harbor freight has cheap boroscopes too.
  23. donjetman

    2008 Yukon Denali AC fluctuating between Cold and hot

    The evaparator may be dirty thus causing the clutch to cycle? My 07 Denali didn't come from the factory with a cabin air filter. I added one - Dorman Kit# 259-200.
  24. donjetman

    factory engine oil cooler lines worth installing?

    If you tow? Yes
  25. donjetman

    Got stuck in tunnel - need advice for ODBII scan tool

    We do that mtn pass and many others in CO & NM summers and winters in our 07 Denali. Never had a problem (yet), but we aren't towing anything.

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