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GMLAN hi\lo into OBD2 connector

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Old 11-26-2007, 07:16 PM
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Default GMLAN hi\lo into OBD2 connector

Im after wiring info to wire up the OBD2 connector on my conversion (L76\E38 ECU). I understand the GMLAN lines go in but not sure where - I have the LS1 wiring which is a single serial line, but not sure how to handle this one.

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Old 11-28-2007, 12:54 AM
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If using a 2005+ automatic tranny I think you use the Lan HI+ and - leads from the tranny Pcm. If using a manual then use the leads from the engine Pcm. But I am not sure if and where they need to be terminated.
Old 11-28-2007, 05:48 PM
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got it:

OBd2 connector Pin 6 is the High speed GMLan Serial Data Bus "+" and Pin 14 is High speed GMLan Serial Data Bus "-". Grounds and power are same as LS1 ecu.
Old 11-29-2007, 08:02 PM
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Did you ever find out if the wires need to be terminated with the 120ohm resistor?



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