My wife has a 2005 GMC Yukon XL, which she loves to death. It has the 5.3 liter engine with roughly 246 K miles. Yesterday, while driving home, the truck died abruptly but she was able to coax it into a parking lot. I tried to go retrieve it, but the starter doesn’t appear to be cranking ? She has a newish battery and I even tried jump starting it, but no luck. Any ideas ? Could a bad ECM explain all the symptoms ?
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