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  1. davidavidd

    2011 Tahoe no crank no start need help

    It appears that the truck is in protected mode, if so this sequence of steps may help you. what do you need? > cell phone's stopwatch app and a charger to keep your Tahoe's battery alive during the process. Follow the steps in exact order, if you fail in just one, start over. On page 4 you...
  2. davidavidd

    2013 Tahoe, Help Needed.Engine quits after key release from start position.

    My bets are on a bad switch, bad ground or the anti-theft system going crazy but you definitely need a bi-directional scanner to find out.
  3. davidavidd

    2009 GMC Yukon Denali 6.2l Oil Pressure Gauge moving Slow-SOLVED

    The gauge in my truck moves fast as I press the accelerator, you need an external tool to make sure there are no problems before they get worse.
  4. davidavidd

    2011 Tahoe no crank no start need help

    By passlock do you mean the anti-theft system?
  5. davidavidd

    2007 yukon denali oil leak

    Lol, I've lost count of how many times I've shared this video here, but I know what it feels like, I'm almost going crazy trying to find the source of this leak. Other possible origins: valve covers, oil pressure sensor and an unlikely but not impossible cause, a hairline crack in the engine...
  6. davidavidd

    2013 Chevy Tahoe 5.3 gas problem help!

    Check your vapor canister purge valve solenoid, if you find carbon pellets there go ahead and change the entire evap system at the same time: both solenoids and the vapor canister. When doing so you should blow out all the fuel lines with compressed air and if possible wash the gas tank. In the...
  7. davidavidd

    Escalade dies after driving a while and comes to a stop

    Is possible, the pellets get into the entire engine, I found them in the intake manifold, the purge valve, the injectors (fragments) and in the fuel/vapor lines. In my case, the fuel pump took the brunt of it, additionally, if the purge valve is stuck, a vacuum leak is created that can cause...
  8. davidavidd

    Escalade dies after driving a while and comes to a stop

    Something similar happened to me recently, check out my post: https://www.tahoeyukonforum.com/threads/summoning-the-geniuses-of-the-forum-problem-accelerating-from-a-stop-hill-engine-stumble-updated.149097/ Conclusion: Bad fuel pump and carbon pellets all over the lines. Replacing the pump...
  9. davidavidd

    Need a little help with CANBus trouble.

    A few years ago something similar happened to me, basically everything is connected to the can bus: A/C, radio, seats, some lights, etc. Usually above the pedals there is a can bus switch or splice, disconnect everything except the computers required to start the engine, if the engine start...
  10. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    :beer: The cleaning helped a lot, at the moment the problem is fixed, it hasn't failed for 3 days. Sometimes has a rough idle, but I've already ordered the pump and it's on its way from Miami, buying it here in Colombia is a scam, the dealer charge me three times the price plus taxes and I'm...
  11. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Not that old, I replaced them 6000 miles ago: plugs + cables + coils (@clubdriven)
  12. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Quick update: The rain delayed me a bit but I finished the cleaning process, some injectors were dirty but nothing out of the ordinary, all working, new gaskets for everything; unfortunately the problem continues. Tomorrow I'm going to test the fuel pressure parked and driving.
  13. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    That's the point, I already have one catch can installed o_O, I don't know if it's not working properly, maybe I should relocate it.
  14. davidavidd

    2009 Tahoe won’t start

    How is the mega fuse? Look up on Youtube how to perform a voltage drop test as that can shed a lot of light on what is going on, remember: voltage does not equal current. A battery can have the correct voltage but not have enough current to even activate the starter solenoid.
  15. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Ok, I started the cleaning process, this is what I found so far: - Small coolant leak in a hose, easy to fix. - EVAP solenoid hose very brittle (I'm going to change it) - Partially open throttle body, with a considerable layer of sticky oil and carbon, the gasket was crushed and in very poor...
  16. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Lol, the ECU "learn" against my pocket, gas consumption has been skyrocketing. Posting update with pictures right now.
  17. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Thanks for your reply, you're right, sometimes getting good spare parts is difficult. This is the second pump on the truck, the first one died a few miles ago due to gasoline contaminated with dirt.
  18. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    I'm going to do that today, first of all I'm going to clean it.
  19. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    I will keep that in mind, my dad knows a lot about cars too and gave me the same advice.
  20. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Nope, but what I did try was to test with the sensor unplugged and the hesitation occurs anyway. So for now that sensor I think may be out of the equation.
  21. davidavidd

    Idle Air Control Valve

    As far as I know there is no separate IAC on a 2011, it's part of the throttle body.
  22. davidavidd

    Summoning the geniuses of the forum: Problem accelerating from a stop / hill, engine stumble [updated]

    Hi TYF friends, I'm having a hard time finding a diagnosis for this problem on my Tahoe (2007, stock Engine 5.3, RWD, 218.000mi, 275/55/R20) so I humbly ask for your collective help, sorry for the long post: When accelerating from a stop the engine acts as if it freezes for 1 second, as if I...
  23. davidavidd

    Engine overheating 2013 tahoe

    Hi! Adjust the coolant level, go for a 15 minute drive, park in a quiet place and usually the leaks can be heard like a steam machine. It's not a bad idea to change the thermostat, it costs 10 dollars and is a easy job of 1 hour at most.
  24. davidavidd

    Is this a crazy idea to cool my 4L60E transmission?

    Ook ok, mics on, the data arrived! After driving for 5 hours on hilly roads and all the seats occupied, the maximum temperature reached was 179º F, min. 160º F. It's not bad at all and it's much "cool" than what I achieved before, although I must also take into account that the other radiator...
  25. davidavidd

    MAP senor weirdness

    Point your ears at the engine, it could be a vacuum leak when reassembling...

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