Chevrolet Silverado / GMC Sierra. Service manual — part 86

Fig. 271: Applying Adhesive To Entire Length Of Rear Oil Seal Housing To Engine
Block Junction At Oil Pan Sealing Surfaces
Courtesy of GENERAL MOTORS CORP.

2. Apply a 5 mm (0.197 in) wide and 25 mm (1.0 in) long bead of adhesive to the entire length

of rear oil seal housing to engine block junction at the oil pan sealing surfaces. Refer to
Sealers, Adhesives, and Lubricants for the correct part number.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 272: View Of Oil Pan Gasket
Courtesy of GENERAL MOTORS CORP.

3. Install a NEW oil pan gasket into the groove in the oil pan.

IMPORTANT: Always install a NEW oil pan gasket.

The oil pan gasket and oil pan must be installed and the
fasteners tightened while the adhesive is still wet to the
touch.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 273: Oil Pan
Courtesy of GENERAL MOTORS CORP.

4. Install the oil pan.

IMPORTANT: The oil pan alignment must always be flush or forward no

more than 0.3 mm (0.011 in) from the rear face of the engine
block.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Press the oil pan gasket into the grooves of the engine front cover and crankshaft rear oil
seal housing.

5. Slide the oil pan back against a suitable straight edge.

Fig. 274: Measuring Oil Pan-To-Transmission Housing Clearance
Courtesy of GENERAL MOTORS CORP.

6. Install the oil pan bolts and nuts until snug.

7. Measure the oil pan-to-transmission housing clearance using a feeler gage and a straight

edge.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado