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 Distance Between Flats

52.165 mm

2.0537 in

Drive Gear, Maximum Side Clearance

0.066 mm

0.0026 in

Driven Gear, Minimum OD

109.987 mm

4.3302 in

Driven Gear, Maximum Side Clearance

0.056 mm

0.0022 in

Driven Gear/Crescent Tooth, Maximum Clearance

0.455 mm

0.0179 in

Driven Gear to Oil Pump Body, Maximum Diametrical Clearance

0.204 mm

0.0080 in

Oil Pump Body Gear Cavity, Maximum Depth

22.245 mm

0.8758 in

Oil Pump Body Gear Cavity, Maximum ID

110.191 mm

4.3382 in

Wear Plate, Minimum Thickness

2.950 mm

0.1161 in