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GMC Sierra 1500 Hybrid Problems

Replace spark plugs every 100,000 miles on GMC Sierra 1500 Hybrid

Problem Description and Possible Solution

The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.

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GMC Sierra 1500 Hybrid Vehicles With This Problem

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Average mileage: (–)
2 model years affected: 2009, 2010
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Brake problem? Or maybe a faulty head gasket cylinder?
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