Do to engine problems with my 97 suburban 5.7L Vortec (previously posted) I am in the process of replacing the engine. I am suspicious that the previous problems are related to the engine running way out of time. As far as I know this could be caused by a defective ECM. All that I know right now is what I was told by my local GMC dealer. They told me that if the original ECM is not working properly that it can't be reprogrammed. I will need to purchase a new ECM ($225) and then it must be programmed while it is the truck. Is there any other place to purchase a new standard ECM with the proper settings etc. or is this something that has to be done completely through my "friendly" GMC dealer? Just last week I contacted the dealer about getting a new MAF sensor.........their price quote was $456 for the sensor and $105 to put it in. You can see why I avoid having any labor done through a dealership.
MJ