Search results

  1. M

    2010 Yukon Denali Overheating when Towing

    In theory, there COULD ... After I converted from mech clutch fan to electrical fan pair, I temporarily reinstalled the mech clutch fan. Y'know, for schidts & giggles, to prove it was possible. But I spent less than 24 hours with three fans. Proving it COULD be done, also proved that there's no...
  2. M

    2010 Yukon Denali Overheating when Towing

    No such thing as a '2500' Denali, unless someone made modifications / upgrades. Since I tend to apply pessimist's margins to everything, start looking to pull over at 230F. Pull over before 239F.
  3. M

    2010 Yukon Denali Overheating when Towing

    There's some sort of electrical test for the radiator fans. If they draw too much current, they are aging out and will need to be replaced soon. GM OE program turn the fans on LOW @ 226F, and turns them on HIGH @ 235F. My pcm tune turns them on LOW @ 217F, and turns them on HIGH @ 226F. Also...
  4. M

    2004 Denali gets hot when parked

    Reefdude84's coolant temp climbs and AC performance falters at idle. He has not yet mentioned overheating.
  5. M

    I'm back!

    Variable lifters can be forced to pretend that they are one mode lifters, but even though this is good for them, they are still variable lifters. Even with extra-often oil changes, they will never be as robust or as long-lived as simpler lifters.
  6. M

    2004 Denali gets hot when parked

    The mech clutch fan's best feature is how much air it moves when the engine is at or over 2000RpM. In other words, it's best suited for towing / hauling, where it makes perfect sense to sacrifice 2 or 3MpG to better protect the powertrain. If you do not regularly tow / haul, electrical fans are...
  7. M

    Recent Purchase '05 Tahoe PPV Fleet 4.8 L V8 4x4 185+mi

    If there are no drivability symptoms, the only thing a 'Check Engine' light is trying to say, is 'read my trouble codes', then go from there. You've likely an iron block and aluminum heads. H2O is not antifreeze, lacks critical additives that extend the life of the ... H2Opump, and prevents the...
  8. M

    Farewell lifted Tahoes

    Looks a wee lil bit taller than OE, like it'd still be too tall for many NYC parking garages. Looks right nice, to me, anyway.
  9. M

    Add DIC to SSV ?

    When your foot is off the go pedal, and the pcm / ecm determines the road is driving the powertrain thru the wheels (instead of the other way round) the pcm /ecm temporarily engages Decel Fuel Cut Off. On a long enough downhill / tailwind, engine coolant temp would get low enough to cancel DFCO...
  10. M

    2004 Denali gets hot when parked

    Same problem, first summer with my Z71. My tuner raised idle to 750RpM. It worked for that summer. Before next summer came, deleted the mech clutch fan. Replaced the mech clutch fan with a pair of electrical fans, tuner adjusted for them, now it can idle in the hot sun all day with cold AC at...
  11. M

    2016 tahoe, how long do these fuel pumps last?

    He meant, pop start his Pontiac Sunbird or Sunfire or Firefly. How much space do a starter and an alternator take up in the trunk anyway?
  12. M

    2005 Suspension Question

    4600 Reasonably stiff. 5100 Reasonably stiffer.
  13. M

    Dealer Service History - Would you buy?

    Get ATF service, disable Cylinder Confusion, change the antifreeze, test the battery, check the alignment, and since the oil hasn't been changed in 30,000 miles, find out where ELSE it was serviced after you change the motor oil.
  14. M

    2016 tahoe, how long do these fuel pumps last?

    You must've changed your fuel filter pretty often. You can't change the newfangled fuel filters without dropping the tank. Seems kinda dumb, but then I remembered that, for GM , this is a great idea!
  15. M

    Back up camera blinding at night.

    Bulbs that give off 'white' light (500K +) can be glaring or blinding in situations where a sunnier yellowish light (4500K - 5000K) would make things easier to look at and see. I also put tiny little 'blinders' on my previous 2012 Yukon XL's backup cam to protect it from rain and stray...
  16. M

    The engine on the Yukon I got as a replacement for the Yukon that got two engine replacements needs replaced. Yes, you read that correctly.

    For whatever it's worth, I used to be a NYC livery chauffeur. One of my clients preferred his Mercedes Sprinter, with an interior customized so most people could walk around upright inside his office away from the office, complete with desk and drawers.
  17. M

    Lane assistant really bad

    Collectively, we're domesticating ourselves / each other by looking for responsibilities to delegate to machines that don't perceive or understand things the way we do. We know and understand the bugs in ourselves far better than self-driving tech knows, much less understands its own bugs...
  18. M

    The engine on the Yukon I got as a replacement for the Yukon that got two engine replacements needs replaced. Yes, you read that correctly.

    How much better are you gonna do with Ford, or ChryStellantis?
  19. M

    Upgrading Ride Quality of a 2018 Chevrolet Tahoe LT 4WD

    Improving handling usually makes the ride less comfortable. Improving ride quality usually makes handling less precise. If your ride bounces more than 1.0 times (up-down-done, down-up-done), get shocks with more / better damping. Bilstein! If it leans over too much in fun turns or makes lane...
  20. M

    What’s wrong with those tires on the pictures?

    I drive in 2WD mode all the time. My rear tires look nothing like that. Those tires were front tires for too long, likely until just before you came to see them, when they were rotated. At minimum, alignment. Could very well need a front suspension and steering overhaul. General feeling I get...
  21. M

    2007 Yukon Timing Chain Tensioner Broke

    Really hope this has nothing to do with 'CASE' - Crank Angle Sensor Error relearning?
  22. M

    AFM disable or lifter issue 2012 PPV TAHOE

    If your tennis elbow is REALLY bad, you may need to do much more than just stop playing tennis. Still a great idea to stop playing tennis though, even if there's much more to be done. Engine Half@$$ lifters are the real problem, though. They are simply not as durable / robust as simpler...
  23. M

    Ran out of gas now wont start

    Besides forgetting to add fuel (sorry, could not resist), fuel pumps are like fish. Pumping air is how fuel pumps get killed. If your tank was really that empty, and you didn't add at least 3 gallons before trying to restart, you didn't add enough gas. I once ran out of gas because I was parked...
  24. M

    Brake Upgrade Help

    Think you need 18" wheels for the above maintenance upgrade. If you want to go mildly crazy - and you have 17" wheels - front brake caliper brackets, calipers, rotors, and pads for a 2010 Suburban. Point is, instead of determining which style caliper your Tahoe is equipped with, just upgrade...
  25. M

    2014 PPV gas pedal stuck down

    You didn't need to get rid of the entire mat, just cut off the ridges in question. Does the rubber floor have ANY floor mat retention features?
View older results

Forum statistics

Threads
132,298
Posts
1,865,561
Members
96,881
Latest member
Cardowntown

Latest posts

Top