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To change the spark plugs in a 2002 Chevy van, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the ignition coil or spark plug wires carefully, then use a socket wrench to unscrew the old spark plugs. Apply a small amount of anti-seize compound to the threads of the new spark plugs, then install them by hand before tightening with the wrench. Finally, reconnect the ignition coil or wires and the battery terminal.

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6mo ago

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