FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Hummer
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2007
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H3 L5-3.7L
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Repair and Diagnosis
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Specifications
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Mechanical Specifications
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Powertrain Management
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Ignition System
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Spark Plug
Spark Plug
Spark Plug
Gap
1.08 mm (0.042 in)
Spark Plug
Torque
18 N.m (13 lb ft)