[Gmecm] 4L80e/4L60e

[Tom Butcher]

I usually lurk, but I'll respond here.  Since the vehicle in question here is a '94 GMC van with a 4L60E, I'm gonna assume that the PCM in question is either the 16196395 or the 16197427 running the $0D mask which is for the 4L60E.  The heavier duty trucks used the same PCM's but ran the 4L80E and either the $0E mask in '94 or the $31 mask in '95.  If you modify the transmission wiring harness for the 4L80E which has an extra sensor and run the approapriate .bin and mask, it will work great.  HTH
   
  Tom

Butler James-CJB006 <Jim.Butler at motorola.com> wrote:
  
Should one also be concerned about (in decreasing order):

- line pressure tables
- upshift/dnshift points
- TCC apply/release points

Maybe Harry's taken this into consideration, i.e., that a
practical retrofit into an existing ECM might require SW mods, but it's
worth mentioning.

Jim


-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On
Behalf Of William Lucke
Sent: Sunday, June 25, 2006 6:49 PM
To: gmecm at diy-efi.org
Subject: RE: [Gmecm] 4L80e/4L60e

You can run a 4L80E with a 4L60E PCM. The truth table for the solenoids
is different, but all you need to do is put an inverter on one of the
solenoid wires, I think.



Will



> From: Rexdina at aol.com
> Subject: [Gmecm] 4L80e/4L60e
> 
> Does anyone know for sure if the 4L80e wiring receptacle and plug 
> would interchange with that for a 4L60e?
> I have a '94 GMC van that I'd like to change from the factory 4L60e
trans. 
> to a '94 4L80e GMC van trans. for towing purposes. 
> If that isn't possible, what about a stand alone controller for the

> 4L80e, and how would I disable the inputs from the 4L60e to the ECM?
> Thanks, and I realize this may be the wrong forum to ask these
questions. 
> In that case, does anyone know of a good GM transmission forum?
> Harry
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