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  1. W

    Squeal from Engine/Trans?

    I think that's the starter. While poking around with my new stethoscope this evening, I searched that area pretty well, no luck. Picked one up today. What an amazing little diagnostic tool. Unfortunately I was unable to locate the source. I poked around for quite awhile with no luck. I feel...
  2. W

    Squeal from Engine/Trans?

    Confirmed, no dash lights or performance issues. Everything mechanically (besides this sound) seems solid. Regarding performance, and I think it's intrinsic in these, but around 45-55 on flat roads it doesn't have enough torque to pull 6th gear with only 4 cylinders running and will hunt...
  3. W

    Squeal from Engine/Trans?

    I'll wait a little bit before doing the mod, but I'll do some research to see what's involved. Learned something while testing this out. First the results. No change with engine load in different gears (P,N,R), or with A/C on/off. Same pitch and volume. What I did find was that increasing RPM...
  4. W

    Squeal from Engine/Trans?

    Yes. At about 8 seconds in the video (as soon as I get under) you can hear the squeal. It's pretty high pitched though. While taking the video it sounds like it's coming from the back/bottom of the engine. I may have to poke around with a tube or something to pick up a more precise location...
  5. W

    Squeal from Engine/Trans?

    Felt around, Couldn't see anything loose or movable.
  6. W

    Squeal from Engine/Trans?

    RPO Codes: Video: Let me know if there's any other info you need!
  7. W

    Squeal from Engine/Trans?

    Thanks for the replies! Video is uploading, but my internet is struggling tonight. Hopefully the link will work after it's uploaded. I'll follow up this post with the RPO codes and a link to the video Upgrades/Mods: HID low beams, Fumoto oil valve for clean oil changes, removed the 3rd row...
  8. W

    Squeal from Engine/Trans?

    Hi guys, I was hoping someone could help me out. I did some cursory searching on here, but haven't found anything so now I'm asking. I've got a 2015 Tahoe (85k) which I picked up about 10k miles ago. When the engine and trans are warm, during/after 4 wheeling, backing a trailer up my driveway...

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