Chevrolet Silverado / GMC Sierra. Manual — part 2208

1. Install the water pump (300) and NEW gaskets (306).

2. Install the water pump bolts (301).

Tighten:

1. Tighten the water pump bolts a first pass to 15 N.m (11 lb ft).

2. Tighten the water pump bolts a final pass to 30 N.m (22 lb ft).

EXHAUST MANIFOLD INSTALLATION - LEFT SIDE

unless otherwise instructed. The use of cooling system seal
tabs, or similar compounds, may restrict coolant flow through
the passages of the cooling system or the engine components.
Restricted coolant flow may cause engine overheating and/or
damage to the cooling system or the engine
components/assembly.

IMPORTANT: All gasket surfaces are to be free of oil or other foreign

material during assembly.

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

Fig. 87: Exhaust Manifold
Courtesy of GENERAL MOTORS CORP.

NOTE:

Refer to Fastener Notice .

IMPORTANT:

Tighten the exhaust manifold bolts as specified in the
service procedure. Improperly installed and/or leaking
exhaust manifold gaskets may affect vehicle emissions
and/or on-board diagnostic (OBD) II system performance.

The cylinder head exhaust manifold bolt hole threads
must be clean and free of debris or threadlocking
material.

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