GM Service Manual Online
For 1990-2009 cars only

Part Measured

Specification

Metric

English

Bushing, Maximum ID

Important: The pump bushing must have a complete burnt-orange color Teflon® coating. If any portion of the Teflon® coating is worn and bronze material is visible, replace the pump.

58.391 mm

2.3015 in

Drive Gear, Maximum Side Clearance

0.066 mm

0.0026 in

Driven Gear, Between Flats Maximum

52.165 mm

2.0537 in

Driven Gear, Minimum OD

108.987 mm

4.2908 in

Oil Pump Body Gear Cavity, Maximum ID

109.216 mm

4.2988 in

Driven Gear to Oil Pump Body, Maximum Diametrical Clearance

0.204 mm

0.0080 in

Driven Gear, Maximum Side Clearance

0.056 mm

0.0022 in

Driven Gear/Crescent Tooth, Maximum Clearance

0.455 mm

0.0179 in

Oil Pump Body Gear Cavity, Maximum Depth

24.940 mm

0.9819 in

Wear Plate, Minimum Thickness

2.950 mm

0.1161 in