I have been working on the swap for half a year and used An HPI harness for the wiring.
At first there where 2 wires mixed up from the ign and the wake relay.
Fixed that and the ecu started.
Tried starting the engine for a few times but could not get it to start.
Threw me the following codes.
0x7E8: P0113 - Intake Air Temperature Sensor 1 Circuit High (Permanent)
0x7E8: P1682 - Driver 5 Line 2 (Permanent)
0x7E8: P2138 - Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation (Permanent)
0x7E8: P2228 - Barometric Pressure (BARO) Sensor Circuit Low Voltage (Permanent)
On my search I found out i had a Camaro pedal so I had to change a few wires on the connector.
Still no start so I looked at 12v while cranking, you guess it, 0volt at crank.
Hooked up a wire that does have 12v on crank and the engine fires right up.
It does smell a little rich but other than that it seems to run great.
I have only started a few times did a little driving on the driveway and let it idle until the engine reached operating temperature.
I still get the same codes. so I traced down all the wires from the mentioned sensors to the pins on the x1,x2 and x3 connector, and the are all connected correct.
I measured once again if all the powers get active as they should.
So I have no clue on what could be wrong.
Reading a bit more on the codes i read somewhere that (permanent) codes only go away if you solved the problem and drive a bit.
Now I think the first attempts to start, without the 12v on crank caused the codes.
My question is, may I assume the codes will go away? Does it no harm to drive the Suburban with these codes?