I'm digging this one up since we just bought an ex!! Where did you source your engine harness to get rid of the gpcm? I would like to do the same since the guy I'm buying it from has a new gpcm in the back seat. Also did you figure out why you were getting those codes?
The codes I am getting are Wastegate, IAH and EBPV...
The reason I am getting these codes is because the wastegate, intake air heater and back pressure valve are all gone. I cut the plugs off and tucked them into the harness before I installed it...
I never got a SES light with the same thing on my PMT truck, so I am "guessing" it has something to do with the NVK PCM... I need to see if my tuner can turn the SES trigger off with tuning or not, if not I will have to go into the harness again and add resistors.
Oh and I forgot... I got the PCM and harness from a couple guys here on the forums.
I have a stancor gpr sitting in the back seat waiting to go on my ex. From what i am getting from this thread, i cannot use it because the ex uses a gpcm instead of the gpr? Hope im reading this wrong....
You would be correct. You can NOT use a GPR on the Excursions... You will have to swap a pickup PCM and wire harness to do this.
Have you hooked up AE yet and ran it through all the tests
My AE has been broken for over a year now... Sucks but it is what it is. I will try a buzz test and cont test with the scan guage tomorrow... I dont forsee any issues however.