Generator Bracket Replacement 4.3L, 5.0L, and 5.7L

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
3. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
4. Remove the air cleaner assembly and the air inlet duct from the throttle body. Refer to one of the following procedures:

•	Air Cleaner Assembly Replacement in Engine Controls - 4.3L

•	Air Cleaner Assembly Replacement in Engine Controls - 5.0L and 5.7L

5. Remove the engine oil and the transmission fluid level indicators.
6. Remove the screw holding the oil level indicator tube and the transmission fluid fill tube to the oil fill tube lower support.
7. Remove the upper section of the oil level indicator tube.



8. Remove the nut holding the transmission fluid fill tube to the rear of the right cylinder head.
9. Remove the upper section of the transmission fluid fill tube.



10. Remove the screw holding the oil fill tube to the oil fill tube lower support.
11. Remove the oil fill tube.



12. Remove the bolts holding the heater outlet and inlet hoses to the oil fill tube lower support.



13. Remove the engine wiring harness retainer from the stud at the oil fill tube lower support.
14. Remove the stud and the bolt for the oil fill tube lower support.
15. Remove the oil fill tube lower support.



16. Remove the upper fan shroud section. Refer to Fan Shroud Replacement in Engine Cooling.
17. Remove the drive belt. Refer to one of the following procedures:

•	Drive Belt Replacement in Engine Mechanical - 4.3L

•	Drive Belt Replacement in Engine Mechanical - 5.0L and 5.7L

18. Remove the generator. Refer to Generator Replacement .
19. Remove the drive belt tensioner. Refer to one of the following procedures:

•	Drive Belt Tensioner Replacement in Engine Mechanical - 4.3L

•	Drive Belt Tensioner Replacement in Engine Mechanical - 5.0L and 5.7L

20. Remove the drive belt idler pulley. Refer to one of the following procedures:

•	Drive Belt Idler Pulley Replacement - Right Side in Engine Mechanical - 4.3L

•	Drive Belt Idler Pulley Replacement - Accessory in Engine Mechanical - 5.0L and 5.7L

21. Remove the 2 bolts and nut holding the generator mounting bracket to the engine.
22. Slide the generator mounting bracket off of the stud.

1. Slide the generator mounting bracket on the stud.

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 3 bolts and the nut.

Tighten
Tighten the generator mounting bracket bolts and the nut to 41 N·m (30 lb ft).

3. Install the drive belt idler pulley. Refer to one of the following procedures:

•	Drive Belt Idler Pulley Replacement - Right Side in Engine Mechanical - 4.3L

•	Drive Belt Idler Pulley Replacement - Accessory in Engine Mechanical - 5.0L and 5.7L

4. Install the drive belt tensioner. Refer to one of the following procedures:

•	Drive Belt Tensioner Replacement in Engine Mechanical - 4.3L

•	Drive Belt Tensioner Replacement in Engine Mechanical - 5.0L and 5.7L

5. Install the generator. Refer to Generator Replacement .
6. Install the drive belt. Refer to one of the following procedures:

•	Drive Belt Replacement in Engine Mechanical - 4.3L

•	Drive Belt Replacement in Engine Mechanical - 5.0L and 5.7L

7. Install the upper fan shroud section. Refer to Fan Shroud Replacement in Engine Cooling.



8. Install the oil fill tube lower support, the bolt and the stud.

Tighten
Tighten the oil fill tube lower support stud and the bolt to 25 N·m (18 lb ft).

9. Install the engine wiring harness retainer on the stud.



10. Install the heater inlet and outlet hose brackets and the bolts to the oil fill tube lower support.

Tighten
Tighten the heater hose bracket bolts to 5 N·m (44 lb in).




11. Install the oil fill tube into the right valve rocker arm cover.
12. Install the screw holding the oil fill tube to the oil fill tube lower support.



13. Install the transmission fluid fill upper tube in the lower tube.
14. Install the nut holding the transmission fluid fill tube to the rear of the right cylinder head.

Tighten
Tighten the transmission fluid fill tube nut to 10 N·m (88 lb in).




15. Apply sealer GM P/N 12346004, or equivalent on the area of the upper section of the oil level indicator tube where it fits into the lower section.
16. Install the upper section of the oil level indicator tube into the lower section.
17. Install the bolt holding the oil level indicator tube and the transmission fluid fill tube to the oil fill tube lower support.

Tighten
Tighten the oil level indicator tube and the transmission fluid fill tube to lower support bolt to 5 N·m (44 lb in).

18. Install the engine oil level indicator and the transmission fluid level indicator.
19. Install the air inlet duct to the throttle body and the air cleaner assembly. Refer to one of the following procedures:

•	Air Cleaner Assembly Replacement in Engine Controls - 4.3L

•	Air Cleaner Assembly Replacement in Engine Controls- 5.0L and 5.7L

20. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
21. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
22. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

Generator Bracket Replacement 8.1L

1. Remove the generator. Refer to Generator Replacement .
2. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement in Engine Mechanical - 8.1L.
3. Remove the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement in Engine Mechanical - 8.1L.
4. Remove the generator bracket bolts (2) and nut.

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.

1. Install the generator bracket bolts (2) and nut.

Tighten

•	Tighten the generator bracket bolts to 50 N·m (37 lb ft).

•	Tighten the generator bracket nut to 41 N·m (30 lb ft).

2. Install the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement in Engine Mechanical - 8.1L.
3. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement in Engine Mechanical - 8.1L.
4. Install the generator. Refer to Generator Replacement .

Generator Bracket Replacement 6.5L

1. Disconnect both the battery negative cables from the batteries. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the upper fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
3. Remove the generator from the generator bracket. Refer to Generator Replacement .
4. Remove the drive belt tensioner from the generator bracket. Refer to Drive Belt Tensioner Replacement in Engine Mechanical-6.5L.
5. Remove the vacuum pump from the generator bracket. Refer to Vacuum Pump Replacement in Engine Mechanical-6.5L.
6. Remove the generator bracket bolts from the engine block.
7. Remove the generator bracket from the vehicle.

1. Install the generator bracket to the vehicle.

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 generator bracket bolts to the engine block.

Tighten
Tighten the generator bracket bolts to 50 N·m (37 lb ft).

Tighten the nuts to 50 N·m (37 lb ft).

3. Install the drive belt tensioner to the generator bracket. Refer to Drive Belt Tensioner Replacement in Engine Mechanical-6.5L.
4. Install the vacuum pump to the generator bracket. Refer to Vacuum Pump Replacement in Engine Mechanical-6.5L.
5. Install the generator to the generator bracket. Refer to Generator Replacement .
6. Install the upper fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
7. Connect both the battery negative cables to the batteries. Refer to Battery Negative Cable Disconnection and Connection .