Tahoe making shuttering/whining noise

My 2006 Tahoe (289,000 miles) started making a whining/shuttering noise a few weeks ago. The noise only happened when accelerating or stopping. Yesterday the truck started, and went in reverse, but would not move in drive. Can anyone give me an idea of what the problem may be? I don’t want to pay to have it towed somewhere just to be told its the transmission, which I will not get replaced on such an old vehicle. Any help, would be appreciated!

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Clarification Request
Did you?

Did you check transmission fluid levels?
Also at that mileage it usually needs a lot of work. Unless the body, interior is spotless, great tires and good overall shape this sort of machine is rarely repaired. The owner of one this old and not in good shape may be doing the old "just get it running for another few months" routine.

Check fluids and while you are in there get out the flashlight to check for unplugged, cracked vacuum lines. I've lost count of those issues.

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Thank you

I've been online all morning looking for replacement vehicles.

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My brother's coworker.

Went to Craigslist and found some 130,000 mile small suv for under 4K. It's not where I shop but hey, some have to go there. And this wasn't without trouble. The very next day after they got it, someone rear ended it and it's in the shop being fixed by the other driver's insurance. So that story is just beginning.

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It is the transmission or transfer case

Eventually it will need to be towed somewhere, or sold cheap to someone who will tow and fix it themself, since you choose not to repair it. I would at least have it towed to a transmission place and have them take a look at it. Could be something as simple as replacing a filter that is blocked, or adjusting a band that is too loose now. That might get it back on the road and you can then sell it for more.

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Will drive in gear 1

Does this help anyone? It will drive in 1st 2nd and 3rd gears.

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clutch pack

If it will drive OK with slow acceleration, but not faster, then likely the clutch pack is worn. In an automatic transmission there are a set of metal rings and every other one has a material similar to that on brake pads, but not quite the same, which provides the "grip" between the clutch rings. When that wears off, you get the symptoms you describe. Here's a couple videos that show what I'm talking about.

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Thank you and update

The truck will drive in lower gears, just not actual drive (won't move at all in drive gear) does this help diagnose the issue or change your mind on what it might be?

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Just talked to a transmission sbop

Based on what I told the mechanic over the phone (the whining noise, the mileage, etc.) he said the ONLY thing it could be is the transmission, rebuilt would be $1600-1800....I just don't want to get ripped off because I'm a woman. Can anyone else give further input?

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one way or the other

You either get a rebuilt tranny, or sell it without, and take a lot less on it.

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The story

Points to it needing a transmission. New is out of the question so a rebuilt.

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