[Gmecm] Re: Geting rid of electronic transmission.

[davesnothereman at netscape.net]

>>  Where did this idea come from that the cooler only work in tcc 
mode?
 From a GM trans class, based on observed fluid flow.  I've been down 
this road too many times with guys that thought they knew better.  
Pissed a service manager off so much when he lost his own trans trying 
to prove he could drive with TCC unlocked in 4th that I had a hard time 
getting decent jobs for a month.  But he never, never asked me to 
disconnect one again.  At another place the shop truck was burning up 
trans left and right.  The lead tech kept changing them... I noticed he 
didn't connect tcc on brand new SRTA replacement.  "Not needed" says 
he, "I've been disconnecting them for years on Vettes."  Trans was dead 
within a month.  Next trans with tcc connected lived until at least 3 
years later when I left.  I've got other stories... too many.

Spend some time looking at when and where GM locks or unlocks the TCC 
in vehicles with the 4L60 family of trans.  In OEM configuration, at 
least after about 86, the converter stays locked for far longer than it 
should.  And when it should unlock, there's generally a downshift 
instead.  Over the years the aftermarket has come up with many ways to 
straighten the issue out.  Change lockup and shift points, then use 
better frictions, modify clutch pack stackup to increase the number of 
frictions, install better cooling,... and it works, no doubt.  But OEM 
stuff doesn't like to be run with TCC unlocked in 4th.

As far as I'm concerned, if you want your trans to live a long and 
happy life, lockup 4th.

>>And we all know that everyone CLAIMS to not tow with that s10 right?
The majority of them don't.  It's not a tough call to look at the rear 
of a truck to see if a hitch was installed.  In rusty states, it's 
almost impossible to miss noticing when one's been removed.

I've also had decent luck with Jasper transmissions.  I've had very 
good luck with Jasper customer service in the cases where the trans 
wasn't right.

Zaphod

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