1998 GMC transmission problem?

[Crosley.In.AZ]

If there is a converter clutch problem , it will chatter just like a  manual transmittion clutch.

Also........ if the converter clutch is locked up correctly and the engine goes into a mis-fire , that will shake /  chatter the vehicle too

[Danimal]

Well, it certainly sounds like this could be the culprit. I get no engine codes but boy do I get a shake! It isn't loud at all like a chattering, just a lot of shuddering.

Now, is this an all day job for the dealership (it is a company car, even WITH 222k miles!)?

Thanks!

[Crosley.In.AZ]

hi,

probably a 1 day job with 1 day of 'sun time'  before and   after the actual repair work...  3 days total

[Danimal]

Yeah, with my dealership, there is always some 'sun time' involved. I've never heard it called that but I am amazed that they still ask me if I'm going to wait for it.

I dropped it off at 7:45 and you won't even touch it until 1 pm, why would I want to WAIT for it?

[chopped]

Trans shop called, it was locking and unlocking. Having the computer reflashed, whatever that means.

[Crosley.In.AZ]

Trans shop called, it was locking and unlocking. Having the computer reflashed, whatever that means.

the PCM (computer) is having the programs re-installed into  it.  These computers can hiccup just like a home computer,   way less often though.

I hope it helps... there may be an update or 2 in the reflash