Chevrolet Silverado / GMC Sierra. Service manual — part 109

Fig. 357: Identifying Oil Pan Skid Plate
Courtesy of GENERAL MOTORS CORP.

55. If equipped, install the oil pan skid plate and bolts.

Tighten: Tighten the bolts to 20 N.m (15 lb ft).

56. Lower the vehicle.

57. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Connection (w/Single Battery) or Battery Negative Cable Disconnection and
Connection (w/Auxiliary Battery) or Battery Negative Cable Disconnection and
Connection (w/Dual Batteries) .

58. Perform the engine prelube procedure. Refer to Engine Prelubing.

59. Add engine oil supplement to the engine oil. Refer to Sealers, Adhesives, and Lubricants

for the correct part number.

60. Fill the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or

Cooling System Draining and Filling (Static Fill) .

61. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .

62. Disable the ignition system.

63. Crank the engine several times. Listen for any unusual noises or evidence that parts are

binding.

64. Start the engine and listen for unusual noises.

65. Check the oil pressure gauge or light and confirm that the engine has acceptable oil

pressure.

66. If necessary, install an oil pressure gage and measure the oil pressure.

67. Run the engine speed at about 1,000 RPM until the engine has reached normal operating

temperature.

68. Listen for sticking valve lifters, or other unusual noises.

69. Inspect for fuel, oil, and/or coolant leaks while the engine is running.

70. Perform a final inspection for the proper oil and coolant levels.

71. Close the hood.

ENGINE OIL AND OIL FILTER REPLACEMENT

Removal Procedure

IMPORTANT: After an overhaul, the engine should be tested. Use the

following procedure after the engine is installed in the
vehicle.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 358: Identifying Oil Drain Plug
Courtesy of GENERAL MOTORS CORP.

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the drain plug and drain the engine oil in a suitable container.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 359: View Of Oil Filter
Courtesy of GENERAL MOTORS CORP.

3. Remove the oil filter.

4. Inspect to ensure the engine oil filter gasket is removed.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado