Chevrolet Silverado / GMC Sierra. Service manual — part 496

Fig. 287: View Of Lower Oil Pan & Bolts/Nuts
Courtesy of GENERAL MOTORS CORP.

9. Remove the lower oil pan bolts/nuts.

10. Separate the lower oil pan from the upper oil pan using J 37228 . See Special Tools .

11. Remove the lower oil pan.

12. If necessary, clean and inspect the lower oil pan. Refer to Lower Oil Pan Cleaning and

Inspection .

IMPORTANT: DO NOT damage the sealing surfaces when separating the

lower oil pan from the upper oil pan.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Installation Procedure

Fig. 288: Determining Sealant Bead Dimensions
Courtesy of GENERAL MOTORS CORP.

1. Apply a 2-3 mm (0.79-0.118 in) by 0.5-1.5 mm (0.02-0.06 in ) wide bead of sealant to the

lower oil pan mating surface. Refer to Sealers, Adhesives, and Lubricants for the correct
part number.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 289: View Of Lower Oil Pan & Bolts/Nuts
Courtesy of GENERAL MOTORS CORP.

2. Install the lower oil pan.

3. Install the lower oil pan bolts/nuts.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 290: Lower Oil Pan Bolts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

4. Tighten the oil pan bolts/nuts in the sequence shown.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado