GM Service Manual Online
For 1990-2009 cars only
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Object Number: 7813  Size: SH

Important: You must measure the rotor and slide on undamaged surfaces. Select similar size replacements. Refer to Oil Pump Rotor and Slide Measurement . Lightly hone both sides of the replacement rotor and the replacement slide in order to remove any nicks or burrs.

  • Measure the oil pump rotor (212) thickness.
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  • Measure the oil pump slide (203) thickness.