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  1. W

    2010 suburban. Slow acceleration

    I don't know what the "tune" does when the PCM knows a knock sensor is down, but judging from watching my knock sensors light up constantly while driving around town (mostly under hard acceleration), I am pretty sure the PCM uses that input as critical data when deciding what to do next. Maybe...
  2. W

    2010 suburban. Slow acceleration

    So maybe that will square things away. Are you having the knock sensor harness replaced as well, or just the sensor?
  3. W

    What do you guys think about this one?

    It seems like Top Dollar +. Everything is high right now, but pretty much every PhD that follows such things believe it is transitory (won’t last). To me, this one was clearly a fleet/government vehicle, which means it sold for pretty close to bottom dollar when new and likely the seller...
  4. W

    Unhooked Battery, now it won't start- Please help! *SOLVED*

    With my friend, it is pretty pronounced. He is a genuine teddy bear, but unfortunately, people that don’t take the time to get to know him, just think he is a jerk. It is a shame, as he is a super guy, once you get past the superficial personality problems. I think it is the only reason he...
  5. W

    2010 suburban. Slow acceleration

    Any DTC's, check engine light, etc.?
  6. W

    Unhooked Battery, now it won't start- Please help! *SOLVED*

    OK, just checking. Kind of a habit for me I guess as I have a friend who has mild Aspergers. He will launch into very lengthly diatribes that basically mirror something I just said, without the benefit of just saying some like, "I agree, ...." I always have to check to see if he misunderstood...
  7. W

    Unhooked Battery, now it won't start- Please help! *SOLVED*

    Isn't that what I said?
  8. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Does sound like he had the gods against him, he bought a Vega after all. :)
  9. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Must have missed the stethoscope… :)
  10. W

    08 Tahoe alignment question! Need help

    I agree with Bill, a proper alignment will straighten it out. With things out of whack, take it really easy on your way to get it aligned, things can get really squirrelly when it is well out of align.
  11. W

    Coolant reservoir cap broke

    It looks like a straight slide in for the piece left in. The only thing that appears to hold it would be a lower o ring. If you have a pick, just hook the lowest part of that inner part and pull up. If you don't have a pick, maybe fashion one from a piece of coat hanger, hammer the end flat...
  12. W

    Another Sleeper...

    Probably depends on where the ultimate information is stored, if it is guarded (encrypted in any way), etc. Sounds like for our GM MY’s not much in the way of security for such things. Soon enough PPVs will start showing up with a few hundred hours on the clock…. ;)
  13. W

    Another Sleeper...

    Thanks for the clip, very interesting. Seems it is far easier today to roll it back than in days of old. Which means it is happening more frequently… :(
  14. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Yep, Hawaiians are mad for spam! :)
  15. W

    Another Sleeper...

    I didn't realize ODO rollback's were even a thing anymore. Wow.
  16. W

    Regular maintenance intervals question

    I don't believe GM has a replacement schedule for the diff lube. I read a post on another forum where a GM engineer stated that the diff lube is not considered a maintenance item, that is, that the lube is expected to last the life of the diff. What he didn't say is what GM thought the...
  17. W

    Tech 2 arrived today, hopefully resolved my high alcohol %

    Not sure, I guess it is possible that the PCM is feeding too much gas on a hot start (because it thinks it has a lot more Ethanol in the fuel than it does), just like a cold start. I only notice it on cold starts, but that is also when the truck is in the garage, so the enclosed space makes the...
  18. W

    Tech 2 arrived today, hopefully resolved my high alcohol %

    Costco E10 87 here has been right at 6% Ethanol every single time I have given it the bottle test. When I fill up after having run some Ethanol free through for a tank, my virtual sensor usually registers around 17%. If I don’t want a pretty rich mixture while it warms up before it gets to...
  19. W

    Cranks, turns over, runs, then dies (lots of codes from the Tech 2)

    I have a PDF of the shop manual on how to debug the shift lock control, I can send it to you if you think it would help. Edit, I also have the transmission PDF.
  20. W

    Cranks, turns over, runs, then dies (lots of codes from the Tech 2)

    I would say it almost certainly is related to that switch (or switch wiring).
  21. W

    Trans filter change or not: high-mileage 2010 Yukon Denali

    I change my fluid and filter every 30K. I do it because the guy who installed my current transmission said that is what he recommended. He did say he didn’t like the flush approach, just drop the pan, replace the filter, refill with enough fluid to bring it back up to recommended levels...
  22. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    think maybe they left the vent valve unplugged when they changed the tank?
  23. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    I am unsure as well, but most of what I have been reading in the last few days about Theft Deterrent stuff, it kind of looks like the BCM is where that stuff is controlled.
  24. W

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Oops, just realized I might have crossed the line... :(
  25. W

    Replacement motor questions but hopefully fixable

    Let's hope so, although fixing a miss should be pretty straight forward if you know the mechanicals are all straighten out. Did you decide to have your injectors tested and cleaned?

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