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GMC Truck
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1989
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R 2500 P/U 2WD V8-454 7.4L
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Repair and Diagnosis
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Technical Service Bulletins
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Superceded Bulletins
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Fuel System - TOP TIER Detergent Gasoline Usage
Fuel System - TOP TIER Detergent Gasoline Usage
This TSB number 05-06-04-022C, dated 11/28/06 has been superceded by TSB number 05-06-04-022G , dated 10/27/10