Crank shaft alignment causing fluid leaks and damage at torque converter/flywheel

Asked by Jun 21, 2019 at 12:48 PM about the 1998 Chevrolet C/K 1500 Silverado Extended Cab 4WD

Question type: Maintenance & Repair

I have a newly rebuilt transmission that has been having problems with
leaks, currently about 1 quart every day and a half or so. The company that
installed it has blamed the problem on a number of things, and they have
taken the transmission down three times to "fix" the problem over the past 1
1/2 years since the initial rebuild. Each time I have received it back it has
developed a serious leak that appears to be coming from the area of the
torque converter at the front of the transmission. After so many times with
the company who did this work not being able to find the problem, and
blaming the problem on everything from a bad torque converter to a bad
flywheel (both have been replaced by them at my expense) and finally
(believe it not) telling me that an "expert" from their company with many
years of experience said I have the "wrong transmission" in my truck (later
recanted because of year confusion) they have now settled on it being not
their fault, but a "bent" or out of alignment crankshaft.  They claim that the
"expert" after coming to the shop ( I guess he made the earlier assessments
without actually seeing the transmission) observed the "wobble" himself,
although there was no detail given about how this was done. I was told by
the company that they would send me a video of it, but as of this writing I
have not received it.

My question is: after they have been giving me all of this widely varying
information about what was wrong with it, and after my carefully checking on
this latest reason they are giving me, I have discovered that the prevalence
of a crankshaft "wobble" or it being bent is so rare that it is about as likely as
my winning the lottery. No one I spoke with has ever seen this happen. to
note: there were no strange vibrations, and in fact no other unusual
problems noted with the engine, in fact I had been told my at least two
mechanics that it was the quietest engine they had ever heard. I'd like to
know your thoughts on this. I realize that I'm going to have to get a full
diagnostic at a Chevy dealership to find out if I am being told the truth, but at
this point if I'm being lied to by them I'm going to have to take more drastic
action.  It would be great to get your opinion.

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