4L60E Trans controller

[Scott Parkhurst]

I'd opt for the Speed Pro T-Com aftermarket trans computer. It's a
stand-alone unit that's programmable via laptop, and allows for programming
of shift points, line pressure, converter lockup, and many other
driveability features. I did an installation on a 99 T/A, and differences
are dramatic. The coolest part is that I've programmed it to be real subtle
under 75 % throttle position, then past that point, all of the changes
(revised shift points, increased line pressure, etc.) kick in, and the trans
gives a real Jekyll and Hyde attitude to the car. I recommend it highly. One
note though, on late model PCU-equipped F-bodies, the stock computer still
looks for trans inputs, and the SES light is illuminated. I'm creating a
daughterboard to feed the factory trans plug the voltages it's seeking per
the GM Service Manual, and this should cure the dash light blues. Using the
T-Com in a  pickup truck won't cause any dash light issues, since the truck
uses separate ECM/TCM computers. 

Scott Parkhurst
Technical Editor
Popular Hot Rodding Magazine

> -----Original Message-----
> From:	gene l. clifford [SMTP:genelc at idworld.net]
> Sent:	Thursday, March 09, 2000 9:25 AM
> To:	gmecm at diy-efi.org
> Subject:	4L60E  Trans controller
> 
> Has any one been able to get a Price on GM part# 12497316 
> This is a stand alone Trans controller for a 4L60E automatic
> any other info on above part would be welcome?
>                                                 GLC
> PS part is listed on pg. # 170 of yr. 2000 GM performance Cat.
> 
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