Your last post has left me confused: "Heres the problem the dash lights trunk opener are controled by the bcm the other things you just mentioned are controled by the ecm. So its a blend between the two."
I'm wondering now if we were barking up the wrong tree with the first diagnosis? Here's why, the other things (you now say are controlled by the ECM) are the fuel pump, no spark, and the fuel gauge, so what made you suspect the BCM if the ECM is what controls the fuel, spark, etc? Could this have been a ECM problem from the get go?
Let's go back to the beginning, and I am certainly not an expert, so please correct me where I am wrong. If I recall correctly, the dash lights and the trunk control were not originally in play, both were operational before I changed the BCM, now they are not. The original problem was a no start condition, nothing to do with the dash lights or the trunk release. First symptoms were no fuel pump life, (without jumping the relay) no spark, and an erroneous fuel gauge reading. (Empty) That's all. Your first analysis was that it sounded like a BCM problem. So I installed another BCM, put it through the 'learning' procedure, and it didn't correct the problem. But now you say it is the BCM that controls the items that were working at the start of this repair, and it's the ECM that controls the fuel, and spark, not the BCM. So maybe I should have been looking at the ECM from the beginning? Is the ECM an acronym for the 'computer', and do you think I need to replace it?
Wednesday, November 21st, 2012 AT 3:52 AM