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GMC Truck
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1989
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R 2500 P/U 2WD L6-292 4.8L
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Repair and Diagnosis
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Transmission and Drivetrain
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Differential Assembly
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Application and ID
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Gear Ratios by RPO Code
Gear Ratios by RPO Code
Gear Ratios can be identified by RPO code, refer to Vehicle / Application and ID.
Application and ID