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GMC
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2000
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C3500 HD 6.5 F, Automatic
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Repair and Diagnosis (Single Page)
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General Information
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Map - Exhaust Systems
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Exhaust Systems
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Muffler Valve
Muffler Valve
Condition
Code
Procedure
Inoperative
A
Require repair or replacement
NOTE:
It may be necessary to replace the muffler assembly to correct this condition.