Chevrolet Silverado / GMC Sierra. Service manual — part 2190

Fig. 19: View Of Oil Pan
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Be sure to align the oil gallery passages in the oil pan and

engine block properly with the oil pan gasket.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

3. Pre-assemble the oil pan gasket to the pan.

1. Install the gasket onto the oil pan.

2. Install the oil pan bolts to the pan and through the gasket.

4. Install the oil pan, gasket, and bolts to the engine block.

5. Tighten the bolts finger tight. Do not overtighten.

6. Place a straight edge across the rear of the engine block and the rear of the oil pan at the

transmission housing mounting surfaces.

Fig. 20: Align Oil Pan Until Rear Of Engine Block And Rear Of Oil Pan Are Flush

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Courtesy of GENERAL MOTORS CORP.

7. Align the oil pan until the rear of engine block and rear of oil pan are flush or even.

Tighten:

1. Tighten the oil pan-to-block and oil pan-to-front cover bolts to 25 N.m (18 lb ft).

2. Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).

8. Measure the oil pan-to-engine block alignment (a).

1. Place a straight edge across the rear of the engine block and rear of oil pan at the

transmission housing mounting surfaces.

2. Insert a feeler gage between the straight edge and the oil pan transmission housing

mounting surface and measure to ensure that there is no greater than a 0.1 mm (0.004
in) gap between the pan and straight edge.

3. If the oil pan alignment is not within specifications, remove the oil pan and repeat the

above procedure.

NOTE:

Refer to Fastener Notice .

IMPORTANT: The rear of the oil pan must NEVER protrude beyond the

engine block and transmission housing mounting
surfaces.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 21: View Of Oil Level Sensor
Courtesy of GENERAL MOTORS CORP.

9. Install the oil level indicator switch.

Tighten: Tighten the oil level indicator switch to 20 N.m (15 lb in).

OIL FILTER INSTALLATION

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado