Recent content by Actifenpleinair

  1. Actifenpleinair

    Coolant reservoir uneven

    I noticed nee reservoirs themselves are quite affordable, 50 -100 bucks if I recall on RockAuto. The old ones discolor, and you'll be able to see the orange fluid way easier in a new reservoir. May be a Crack in the reservoir, or even in the valley cover crossover tube front of v8.
  2. Actifenpleinair

    It’s a goner, isn’t it?

    Could it be something rubbing on the timing chain? Like a piece of the tensioner or a piece of the cam position sensor? I mangled two Cam sensors trying to pull them out after 250k on one and only 115k on another, both 2007 L92...
  3. Actifenpleinair

    L92 in 07 Denali is toast is L92 only option

    Hey Tahoe-Denali, my failure was scarily similar. '07 Yukon denali, solid rebuilt tranny, I was hammering up LCC to Snowbird when engine power dropped, I downshifted and couldn't keep revs up. Then I saw the steam. Turns out the engine has gone into protective mode, after a heater core tee broke...
  4. Actifenpleinair

    2016 Tahoe LTZ - Swapping to the 6.6L L8T

    That's awful purty! Those headers look fine as is. How many torques and HPs do you think she'll do as she sits?
  5. Actifenpleinair

    Chevy Tahoe High Country vs Ford Expedition Limited

    As a member of the lower back extreme abuse club ... I agree, and from your screen name, I suspect it is more than "personal preference ".... :)
  6. Actifenpleinair

    6.2 Engine Replacement

    LMGTFY... The new V8 engines from the Tonawanda, NY plant are expected to be in 2027 model year GMC Yukons, not the current 2025 models. The 2025 GMC Yukons, which started arriving at dealerships in late 2024 and early 2025, use the existing generation of V8 engines. Here is a breakdown of the...
  7. Actifenpleinair

    Highway driving - do you make constant corrections or can you relax?

    Too much toe in. Go to zero. My 2007 with 280k settled in from twitchy to chill when I went from .3 degree toe to zero. About a half turn of the tie rod, and Bob's your uncle. Cheers.
  8. Actifenpleinair

    OEM oil cooler block discoveries....

    Does your new one have a thermostat? Was answered earlier.... I am in the cold elevations often and I like the warm up the oil quickly fxn of a working thermostat, wonder if my '07 denali has it, and if it does, i suspect it may be stuck open... was towing heavy and fast at elevation and saw oil...
  9. Actifenpleinair

    L92 low hot oil pressure at idle HELP!!!!

    My oil pressure sender was dead on at 240k when I put a new one in (a pain!) I would use an obd scanner live data to see if it goes from near zero engine off to 50's psi cold and in 40's hot 2k rpm, then watch as it falls to the low point at hot idle in gear. If it reads a range and reacts to...
  10. Actifenpleinair

    L92 low hot oil pressure at idle HELP!!!!

    I bought this used via a used car dealer / the Manhiem Auction in PA and a Cadillac Dealer trade in in PA. the unit was originally in colorado with a rental comp..... Not sure i would use lower viscosity in winter, our modern ECM controlled engines warm up quickly to thermostat temp, and stay...
  11. Actifenpleinair

    6.2L - Debris Found in Engine Oil

    I just did some unplanned cam position sensor, water pump, timing cover, oil pump, timing gear and chain work on my 278,000 mile 6.2 L non AFM Yukon when I tried to simply pull out the Cam PS, but ended with a drilled, fragged, multiple pieces camshaft position sensor. Those plastic colors and...
  12. Actifenpleinair

    Favorite Tire for 2016 Yukon XL?

    I have had REALLY good experience with Nokian tyres... From an old explorer , F350 saw, and Trailblazer EXT on dirt roads in Vermont, to the 300k miles on the tblzr and an '07 Yukon Denali all over the UT, Moab, and Western mountain states. I always got 50,000 plus miles on Rotiiva ATs with...
  13. Actifenpleinair

    07 Yukon - New Member

    Wow well done, seems we've done many similar projects. Any resolution on the Rack and Pinion?
  14. Actifenpleinair

    L92 low hot oil pressure at idle HELP!!!!

    2007 yukon Denali L92 with 277,000 miles, 5w30 synthetic, 6-7500 mile change interval, UPF63R filter, since 160,000 miles purchased w/ 6L80 rebuilt i had lowish oil pressure at hot idle in gear, ~13psi. Internals and VVT all stock Used my Banks Automind tuner to raise P and N idle to 700 R,D,M...
  15. Actifenpleinair

    (How to:) 07 Tahoe Gauge backlighting on all the time

    Which way did this work for you ken97put?
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