Chevrolet Silverado / GMC Sierra. Manual — part 183

Fig. 611: Engine Block Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.

11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of

the engine block right rear oil gallery plug, the engine block left rear oil gallery plug, and
the engine block left side oil gallery plug.

12. Install the engine block right rear oil gallery plug, the engine block left rear oil gallery plug,

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

and the engine block left side oil gallery plug.

Tighten:

Tighten the engine block left side oil gallery plug and the engine block right rear oil
gallery plug to 20 N.m (15 lb ft).

Tighten the engine block left rear oil gallery plug to 30 N.m (22 lb ft).

Fig. 612: Installing Transmission Locator Dowel Straight Pins
Courtesy of GENERAL MOTORS CORP.

13. Install the transmission locator dowel straight pins, if required.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 613: Left Side Cylinder Head Locator Dowel Pins Proper Installation Position
Courtesy of GENERAL MOTORS CORP.

14. Install the left side cylinder head locator dowel pins, if required.

The installation height should be 6.3-6.5 mm (0.248-0.256 in) (a).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado