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nonnieselman
August 4th, 2009, 10:45 AM
Hey guys,
Got another question....

Workin on swapping a 2005 5.3/60E out of a Silverado into a 1995 Chevy Regular cab truck.

Goin to work out the mess of wiring this weekend. Got to wondering how i can setup a Tow/Haul button for him..

Just got to lookin at PCM pinouts and all i can come up with is that the button on the Shifter goes to the BCM and not directly to the PCM??
ChipsByAl
August 4th, 2009, 10:49 AM
Check {D0409} You can wire a simple switch to activate the Tow Haul function. There would be no indicator however.
Al
nonnieselman
August 4th, 2009, 11:01 AM
Awesome... i didnt look thru the tune hard enough...


D0409
These options enable the various shift pattern modes within the PCM.
Note: J1 is the 'BLUE' connector on the PCM.
Switch types used must be momentary connect to ground.

'No Switch' = Performance mode via a switch is not functional.
'One Switch' = Performance mode via a switch can be activated (J1 - pin71).
'Two Switches' = Performance mode via a switch can be activated (J1 - pin71), and Manual Mode can be activated (J1 - pin31).
'C2 Data Bus' = Shift pattern modes are sent on the data bus to the PCM from another module, eg - BCM.
rennoc442
August 4th, 2009, 03:49 PM
I was looking at how to add this to my 97 silverado, I have a 411 pcm in it now, and would love to have this mode on mine as well, any ideas?
ChipsByAl
August 5th, 2009, 01:02 AM
If you are running the Express Van file, then use the same location in EFI_Live as I posted above. If not, what base tun file are you using?
Al
rennoc442
August 5th, 2009, 02:21 AM
Yah im using the express van tune. So im guessing that I would need to hook up a momentary switch to ground? Im looking at the tune now and I see that its
D3601 for a performance mode, I dont see D0409?
ChipsByAl
August 5th, 2009, 02:30 AM
{D0409} is right below it! It is for the Data Bus.
Al
rennoc442
August 5th, 2009, 02:41 AM
DUH! Very cool! So I would want to enable D3601 wouldnt I? Also just a simple momentary switch to ground will work? So its like grounding the terminal, then pulling it off the ground to set it, then again if I want to take it out of perf mode? Im guessing the 2 switches are 2 actual switches?