Oil Pump Replacement for GMC Truck GMC C Pickup - 2WD 2000

1. Disconnect the negative battery cable from the battery. Refer to Battery Cable in Engine Electrical
2. Drain the crankcase. Refer to Engine Oil and Oil Filter Replacement .
3. Remove the oil pan from the engine block. Refer to Oil Pan Replacement .



4. Remove the oil pump retaining bolts from the oil pump. Refer to Oil Pump, Pump Screen and Deflector Removal .
5. Remove the oil pump assembly from the engine block.

Important: When installing the oil pump, always replace the retainer between the oil pump and the shaft.

1. Install the oil pump to the engine block. Refer to Oil Pump, Pump Screen and Deflector Installation .

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the oil pump mounting bolts.

Tighten
Tighten the bolts to 90 N·m (65 lb ft).

3. Install the oil pan to the engine block. Refer to Oil Pan Replacement .
4. Connect the battery negative cables to the battery. Refer to Battery Cable in Engine Electrical.