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2004 tahoe z71 issue thoughts


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I'm thinking that the bcm is shot in my truck, I'm curious to know if this is a plug & play item that I can do in my driveway or if I'd need to send it off to the dealer for further programming. I still haven't found the oil leak that I have but I did happen to check and see if it's just oil leaking and it isn't, I'm thinking maybe something with the water pump but won't know until I get it in the air and really look at the front of the block. Is this a normal wear & tear type of symptom for the water pump or just a coincidence???

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It's not Concrete that it's the bcm but from what I'm doing homework on its looking that way, I did post previously that my audibles (chimes and radio) pick and choose when they will work. If the bcm is the culprit what causes it to crap out? Also just for ho-ho's, what would be a better route to go, brand new unit or a junkyard unit???

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