Chevrolet Silverado / GMC Sierra. Service manual — part 2161

Fig. 162: View Of Fixture Plate, Drill Bushing & Tool Marking
Courtesy of GENERAL MOTORS CORP.

13. Install the insert and driver (1) through the fixture plate and bushing and into the hole.

IMPORTANT: The fixture plate and bushing remains installed onto the

engine block during the insert installation procedure.

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

Rotate the driver tool until the mark on the tool (3) aligns with the top of the bushing (2).

The installer tool will tighten up before screwing completely through the insert. This is
acceptable. You are forming the bottom threads of the insert and mechanically locking the
insert to the base material threads.

SERVICE PRIOR TO ASSEMBLY

Dirt or debris will cause premature wear of the rebuilt engine. Clean all components. Refer
to Cleanliness and Care .

Use the proper tools to measure components when inspecting for excessive wear.
Components that are not within the manufacturers specifications must be repaired or
replaced.

When the components are installed into an engine, return the components to their original
location, position and direction. Refer to Separating Parts .

During assembly, lubricate all moving parts with clean engine oil. This provides initial
lubrication when the engine is first started.

ENGINE BLOCK PLUG INSTALLATION

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. 163: Identifying Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.

1. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480)

to the engine block coolant heater sealing washer (115), if applicable. Refer to Sealers,
Adhesives, and Lubricants .

IMPORTANT: Engine block plug, oil gallery, and coolant sealing washers

may be used again if not bent, scored or otherwise damaged.

NOTE:

Refer to Fastener Notice .

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

2. Install the engine block coolant heater (114) to the engine block.

Tighten: Tighten the engine block coolant heater to 50 N.m (37 lb ft).

Fig. 164: Identifying Plug Location On Underside Of Block
Courtesy of GENERAL MOTORS CORP.

3. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480)

to the engine block right rear coolant drain hole plug sealing washer.

4. Install the engine block right rear coolant drain hole plug.

Tighten: Tighten the engine block right rear coolant drain hole plug to 60 N.m (44 lb ft).

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