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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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Superceded Bulletins
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Fuel System 'TOP TIER' Detergent Gasoline Information
Fuel System 'TOP TIER' Detergent Gasoline Information
This TSB number 04-06-04-047H, dated 06/24/08 has been superceded by TSB number 04-06-04-047K , dated 07/19/12