Chevrolet Silverado / GMC Sierra. Service manual — part 186

Fig. 622: View Of Crankshaft
Courtesy of GENERAL MOTORS CORP.

3. Apply clean engine oil to the crankshaft bearing journals.

4. Install the crankshaft.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 623: View Of Crankshaft Bearings & Crankshaft Bearing Caps
Courtesy of GENERAL MOTORS CORP.

5. Install the crankshaft bearings into the crankshaft bearing caps.

6. Apply clean engine oil to the crankshaft bearings.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 624: Crankshaft Bearing Caps
Courtesy of GENERAL MOTORS CORP.

7. Install the crankshaft bearing caps in the original position and with the arrow on the

crankshaft bearing caps in the direction of the front of the engine block.

8. Install the NEW crankshaft bearing cap bolts until snug.

9. Thrust the crankshaft rearward in order to set and align the crankshaft thrust bearings and

the crankshaft bearing caps.

10. Thrust the crankshaft forward in order to align the rear faces of the crankshaft thrust

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

bearings.

11. Tighten the crankshaft bearing cap bolts.

Tighten:

1. Tighten the crankshaft bearing cap bolts on the first pass to 20 N.m (15 lb ft).

2. Tighten the crankshaft bearing cap bolts on the final pass an additional 73 degrees

using the J 45059 . See Special Tools.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado