A clanging noise on the passenger side of a 3.8L Pontiac Trans Sport engine during cranking could indicate several issues, such as a failing starter motor, damaged flywheel, or a loose or damaged accessory component like the alternator or Power Steering pump. It’s also possible that the noise is related to internal engine damage, such as a broken timing chain or loose components. Given the loss of power and electrical issues, it's advisable to have the vehicle inspected by a professional to diagnose the problem accurately.
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