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I need a chip for a manual.

gone huntin said:
It's the 3/4 to and 1 ton version of the ECM. I can switch to a 7747, but I already have the 8747 and don't have the 7747.
Click to expand...

You've seen this? http://static.moates.net/gmecm/g2/G2.htm

Heck, I wouldn't be surprised if they could burn that AWKF to a chip before they send the entire thing out to you, assuming they are willing to solder the holder to the board. I know I've seen it somewhere that the service is offered, just can't recall who.
 
dyeager535 said:
You've seen this? http://static.moates.net/gmecm/g2/G2.htm

Heck, I wouldn't be surprised if they could burn that AWKF to a chip before they send the entire thing out to you, assuming they are willing to solder the holder to the board. I know I've seen it somewhere that the service is offered, just can't recall who.
Click to expand...


The 8747 has the ability to run the diverter valve for the AIR system and can also duty cycle the EGR solenoid, other than that they are essentially the same as a 7747. The wiring is the same etc.

I have a stack of 7747s on the shelf and can modify one to take a sf512 chip, burn a chip and send it out if you would like.
 
bigblock72 said:
I have a stack of 7747s on the shelf and can modify one to take a sf512 chip, burn a chip and send it out if you would like.
Click to expand...

One of the threads I saw mentioned a potential wiring pinout change between the two. Is it just related to a few added or subtracted wires, instead of the entire pinout changing?
 
dyeager535 said:
One of the threads I saw mentioned a potential wiring pinout change between the two. Is it just related to a few added or subtracted wires, instead of the entire pinout changing?
Click to expand...
Yes I believe there is a couple of wires to swap, connectors are the same as far as I can remember. Most difficult part is changing the EGR to a backpressure style or deleting EGR funtionality and deleting AIR system.
I may have an 8747 on the shelf I can double check to make sure I'm not out in left field.
 
At one point the GMECM project had the pinouts listed for various ECM's, but no idea if that still exists.

Changing a few pins is no big deal, changing the EGR and what not starts to be a pain.
 
dyeager535 said:
At one point the GMECM project had the pinouts listed for various ECM's, but no idea if that still exists.

Changing a few pins is no big deal, changing the EGR and what not starts to be a pain.
Click to expand...

On a conversion it's no big deal, just delete EGR and AIR functions in the software. On a truck that needs to pass emissions it's easier to stay 8747. I personally will do a little extra work to have a more mainstream/easy to find computer.
 
This truck has no air pump and does not have to pass emissions. Doing away with EGR would be fine too. I'd be fine with changing to a 7747.
 
bigblock72 said:
The 8747 has the ability to run the diverter valve for the AIR system and can also duty cycle the EGR solenoid, other than that they are essentially the same as a 7747. The wiring is the same etc.

I have a stack of 7747s on the shelf and can modify one to take a sf512 chip, burn a chip and send it out if you would like.
Click to expand...
How much?
 
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