Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
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The second design oil pump rotor (212) and slide (203) are identified with dimples (circular depression) as shown above.
The rotor (212) has two dimples adjacent to the rotor drive tangs (1).
The slide (203) has one dimple located on the spring tab (2).
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