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  1. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Thought the harness connectors were under the car. What was shard about it?
  2. Deuce16GMCs

    Has anyone experienced this engine noise '21 or '22?

    Is yours a 6.2?
  3. Deuce16GMCs

    Has anyone experienced this engine noise '21 or '22?

    After further investigation, it appears the squealing from when accelerating from 39 to 45 and the squealing when cruising around the 70mph range is coming from the exhaust flapper valve. I can duplicate it in my driveway and make it go away by forcing the flapper valve open. I may have to fight...
  4. Deuce16GMCs

    Corsa Exhaust for 6.2 Rear Alignment Issue

    Does the 21± 6.2L Corsa have a flapper? How's the sound when cruising?
  5. Deuce16GMCs

    Has anyone experienced this engine noise '21 or '22?

    Gentleman, I have 2023 6.2 Tahoe. It suffers from the GM 6.2 Squeal Chirp. It squeals when stopping at 14 miles per hours (this one can be cancelled by driving in L9 to deactivate the DFM). It squeals during every gear shift (regardless of L9). Although very faint. It squeals when...
  6. Deuce16GMCs

    2023 Tahoe/Squealing at low speeds

    I'm going to call GM customer service. I want regional tech rep to drive it with me. I don't know if they do that or not.
  7. Deuce16GMCs

    2023 Tahoe/Squealing at low speeds

    Man...I'm miserable. I love this truck. My kids love this truck. My wife loves this trick. But this this squealing is horrible. Iits in the mid 70's here and I can't drove with the windows down. It squeals when stopping at 14 miles per hours (this one can be cancelled by driving in L9 to...
  8. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    @Tenscourts I just want to confirm that these are connectors for the harness you plugged into on the Tahoe. Also, on the drivers side, coming off the connector, there another leg that has a 2 pin connector that connects to nothing. Do you know what this 2 pin is supposed to connect to?
  9. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    It's still not up on their website yet.
  10. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    Any squealing/chirping sound when coming to stop from 25-30 mph. You'll hear it as the speedometer crosses down at 14 mph. Keep drivers windows down only, other windows up.
  11. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Absolutely phenomenal work. Take my money please. You deserve it for the work you put into this.
  12. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Do you happen to have pictures at night of your bulb setup?
  13. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Marker is already LED. Turn, brake, and reverse are not.
  14. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Great news I'm excited
  15. Deuce16GMCs

    2023 Tahoe/Squealing at low speeds

    Just a follow-up. My job uses Escalades to transport guests. Today I drove 5 Escalades. 4 had zero squeals. 1 squealed so low 1 time that I had hang for the vehicle to hear it. This is maddening to see such inconsistency and lack of quality control from GM.
  16. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    You hit the nail on the head with the cylinders reactivating once you drop below 14 mph. That's exactly when the squeak happens. Depending on how many cylinders are reactivating determines whether it's a tiny squeal or long drawn out squeal. Were you hearing the squealing before the Corsa?
  17. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    I would say the squeal while cruising, even when L9 (DFM deactivation) is engaged, being caused by the flap. The TSB does openly state that the squeal that's present when coming to a stop and accelerating from a steady cruise at 60-75 mph is being caused by the retarding of the spark when...
  18. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    Thanks for chiming in. Does the borla or the aftermarket exhaust the GM sells for the 6.2 cancel out a lot of the squealing? I may upgrade the exhaust.
  19. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    Yes, correct. No one else offers anything like this. Every other LED manufacturer that offers you the resistors tells you to plug them in in line with your bulbs or put a harness behind the lamp. Truly grateful you've taken the time to develop test something like this that will be plug and play...
  20. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    This would be great.
  21. Deuce16GMCs

    21+ Tahoe LED Tail Lights

    So this harness just inter-connects under the rear quarter panel and provides the resistors for all three bulbs?
  22. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    You are spot on. "Yes it's perfectly normal and all of our vehicles that we used our crappy components on. If you're lucky enough to be one of the ones that we used are better components on your car does not squeal. Don't compare a car with crappy components to another one with good components...
  23. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    They said it's not. GM rewrote the code for 21+. It was open source before, but now they wrote the code internally. Range is working on breaking the code to make a model for 21+, but they don't have anything now. They expect an update by end of year.
  24. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    Here's GM's bulletin. https://static.nhtsa.gov/odi/tsbs/2022/MC-10225749-0001.pdf Heres a 2022 Silverado with squeal. The bulletin says there 4 different squeals. I won the lemon lottery have 3 of the 4.
  25. Deuce16GMCs

    Cylinder deactivation for the 2021-2023's?

    My truck is currently at its third dealership. The first dealer that actually tried to address it took $120,000 escalade out and said that it squealed just like mine just a bit quieter. It wouldn't let me ride with them. I just had to take their word for it. At the second dealership I drove a...

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