have a 06 duramax lly that will start but dies after couple sec. like you turned off the key. have no interior lights radio cluster etc. except the seats. checked all the fuses .think might be bcm ?
Ok, I was trying to avoid this but pull the computer and check it against a new one. I don't like to spend the money if it is a simple thing. Has the truck been in an accident or had flood damage?
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