Recent content by donjetman

  1. donjetman

    4th Gear issue after rebuild

    @NickTransmissions
  2. donjetman

    87 or 91 octane gas

    Ethanol has less energy (BTUs) per gallon than gasoline so mileage/range suffers, but it cheaper. I've run mixtures of as much as 30% ethanol and no issue(s).
  3. donjetman

    87 or 91 octane gas

    If you want to extend your range/mpg? run premium. In our Denali (mostly hwy) premium pays for itself. GM recommends premium with our 07 6.2L L92. I experimented w/87 and 89 unleaded and gas mileage suffered and I got an occasional "Knock Detected" on the digital info center, not good. Your...
  4. donjetman

    GMT900 SUV Converting Oil & Trans Cooler Lines to 6AN & 8AN Braided SS w/ AN Fittings

    My Denali sees duty in 100+ degree temps (Texas) and -20 degree CO mtns, so it will be plumbed thru the radiator.
  5. donjetman

    GMT900 SUV Converting Oil & Trans Cooler Lines to 6AN & 8AN Braided SS w/ AN Fittings

    @CMoore711 thanks My 07 Denali has the smallish factory KNP trans cooler and NO oil cooler. I may add a oil cooler and a larger trans cooler. I'll study your post.
  6. donjetman

    Bearing problem?

    @JTS197 especially with Valvoline R&P. Its a good oil but not for extended oil drain intervals. 5k max if mostly hwy miles. 3,500 if mostly city.
  7. donjetman

    Bearing problem?

    @JTS197 oil analysis is your friend as is cutting open the filter and inspecting.
  8. donjetman

    Front CV-Axle Replacement Question

    No alignment is necessary
  9. donjetman

    AFM/DoD Delete Advice Needed

    Thanks @RET423 was successful with his DOD/AFM delete and NOT changing the cam, exactly what I may do someday. My LY5 doesn't tick, misfire, etc and the cam is like new. One thing I forgot in my post #6 here was needing to buy 8 pushrods of the proper length (7.385" ?) to set proper preload.
  10. donjetman

    AFM/DoD Delete Advice Needed

    @Kwing I've been driving my LS powered (2008 gen4 LY5) 51 Chevy pickup for many yrs and 3,000 miles with the its AFM tuned out but all the AFM hardware intact. Unless someone can convince me otherwise? I'm planning to leave the stock LY5 cam in place. It runs great and gets good mpg. In the...
  11. donjetman

    Cylinder head question

    x2
  12. donjetman

    2013 Tahoe soft pedal only after bleeding

    me too and I've replaced all hoses and calipers. Anytime it rains or I'm driving in snow I do panic stops to flush ole fluid out of the abs system.
  13. donjetman

    Engine dying while rolling

    I For preventative mx I just changed the crankshaft position sensor in my 07 6.2 w/213k miles and there was NO need to do a relearn. Of course I had the battery disconnected when I did this. Same goes for the camshaft position sensor.
  14. donjetman

    Swap from AWD to 4X4 two speed TC

    please post a link to him talking/showing the NP421 transfer case install. I couldn't find such a thing as a NP421 transfer case?
  15. donjetman

    2008 2500 Suburban

    ;)
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