Chevrolet Silverado / GMC Sierra. Service manual — part 2024

34. Remove the oil pan gasket (1) from the pan.

35. Discard the oil pan gasket.

36. Discard the rivets, if necessary.

Installation Procedure

IMPORTANT:

The alignment of the structural oil pan is critical. The rear
bolt hole locations of the oil pan provide mounting points for
the transmission bellhousing. To ensure the rigidity of the
powertrain and correct transmission alignment, it is
important that the rear of the block and the rear of the oil pan
must NEVER protrude beyond the engine block and
transmission bellhousing plane.

Do not reuse the oil pan gasket.

It is not necessary to rivet the NEW gasket to the oil pan.

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. 449: View Of Sealant Applied To Front Oil Pan-To-Engine Block Junction
Courtesy of GENERAL MOTORS CORP.

1. If reusing the oil pan perform the following step, otherwise proceed to step 3.

2. Place a NEW oil pan gasket onto the oil pan.

3. Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the engine block. Apply

the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan

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

surface. Refer to Sealers, Adhesives, and Lubricants .

Fig. 450: View Of Sealant Applied To Rear Oil Pan-To-Engine Block Junction
Courtesy of GENERAL MOTORS CORP.

4. Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.8 in) long to the engine block. Apply the

sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface.
Refer to Sealers, Adhesives, and Lubricants .

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. 451: View Of Oil Pan & Bolts
Courtesy of GENERAL MOTORS CORP.

5. Install 1 oil pan bolt into a oil pan bolt hole and up through the gasket.

6. Position and install the oil pan and the rest of the oil pan bolts.

7. Tighten the oil pan bolts until snug.

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