05 gto/ls2 ??
Thread Starter
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From: GA, USA
05 gto/ls2 ?? [Tried the search... got 1 response, of no value]
Am wiring the E40/tcm into an El Camino.[Stock harness modified by Speartech.]
The owner is using the 05 GTO auto shifter, and I need to find a signal, [either 12v, or neg], out of the PNP, [or?], to trigger a start relay. There is no BCM, etc, from the donor vehicle.
Also, there is a 2 wire plug, that terminates right at the ft end of the pass side inj harness run. The wires are green/yellow trace, and tan. My Alldata schematic says it's the IAT sensor. However, the MAF has the IAT sensor in it, and there are 5 wires in the plug. [1 wire appears to be down in the plug far enough that it won't make a connection.] I don't have the OEM inlet duct. Is the IAT separate, even tho the MAF is a 5 wire??
Now I know why the swap back to the LS1B system is so popular!!
NE help is appreciated!
MERRY CHRISTMAS!
Am wiring the E40/tcm into an El Camino.[Stock harness modified by Speartech.]
The owner is using the 05 GTO auto shifter, and I need to find a signal, [either 12v, or neg], out of the PNP, [or?], to trigger a start relay. There is no BCM, etc, from the donor vehicle.
Also, there is a 2 wire plug, that terminates right at the ft end of the pass side inj harness run. The wires are green/yellow trace, and tan. My Alldata schematic says it's the IAT sensor. However, the MAF has the IAT sensor in it, and there are 5 wires in the plug. [1 wire appears to be down in the plug far enough that it won't make a connection.] I don't have the OEM inlet duct. Is the IAT separate, even tho the MAF is a 5 wire??
Now I know why the swap back to the LS1B system is so popular!!
NE help is appreciated!
MERRY CHRISTMAS!
Last edited by Old Geezer; Dec 23, 2011 at 01:48 PM.
Staging Lane
Joined: Mar 2006
Posts: 54
Likes: 0
From: Aviano, Italy
I just pulled an LS2 from a '05 GTO I bought wrecked a few days ago. the plug goes to the sensor on the vapor return, look at the picture. I believe it is the IAT.
Try this link for some wiring info:
http://www.ls2.com/forums/showthread...ghlight=wiring
Try this link for some wiring info:
http://www.ls2.com/forums/showthread...ghlight=wiring
Last edited by big johhny; Dec 23, 2011 at 02:51 PM.
Thread Starter
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From: GA, USA
Ok.. I now remember taking the harness off, and unplugging this plug.
I wonder why the Alldata info shows the IAT as being separate from the MAF, when there's 5 wires in it, and a sensor bulb....
Guess it doesn't make any diff, I'll just use the MAF and see what I get on the EFILIVE scan for IAT.
Might you know what wire I can get into to use for a P/N signal??
TIA, for the help!
MERRY CHRISTMAS!
I wonder why the Alldata info shows the IAT as being separate from the MAF, when there's 5 wires in it, and a sensor bulb....
Guess it doesn't make any diff, I'll just use the MAF and see what I get on the EFILIVE scan for IAT.
Might you know what wire I can get into to use for a P/N signal??
TIA, for the help!
MERRY CHRISTMAS!
Starter Relay control is C1 13, Park Neutral is C3 22 (wire should be grounded when the shifter is in park or neutral).
MAF should be 5 pin on all LS2 24X Applications.
Hope this helps.
Jon
PSI
MAF should be 5 pin on all LS2 24X Applications.
Hope this helps.
Jon
PSI
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Thanks! Thread Starter
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From: GA, USA
Just completed.. There is no wire at # 13. At C3/22, there is a or/blk wire.
Hmnnn. I wonder if the person that modified the harness took the 13 wire out..
I find a yellow wire at the start relay...Should be run there from position 13/C1.
I was going to add the wire. However I have wire ends for the LS1B style PCM connectors, but they appear to be too big for the E40 pins..Correct or not??
On my 05 H2 trans set up, I ran a wire from pin 1 on the PNP switch, to a Bosch relay, ran the starter solenoid wires thru that. I think this may work.
MORE BS to deal with...Just checked the PNP plug.. Wires are no where near the color codes on the Alldata sheets..
Merry Christmas/Happy New Year all.....
Last edited by Old Geezer; Dec 24, 2011 at 04:46 PM.
