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There are no tune-up specs it is all controled by the computer. The only thing you do is set the spark plug gap to .060 and change air and fuel filters. that is it. There are no tune-up specs it is all controled by the computer. The only thing you do is set the spark plug gap to .060 and change air and fuel filters. that is it. There are no tune-up specs it is all controled by the computer. The only thing you do is set the spark plug gap to .060 and change air and fuel filters. that is it.

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15y ago
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Q: What are the tune up specs for a 2003 Chevy 2500 6.0l truck?
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