Hummer H2. Manual — part 1882
Fig. 679: Throttle Body Gasket
Courtesy of GENERAL MOTORS CORP.
1. Install the throttle body studs, if required.
Tighten: Tighten the throttle body studs to 6 N.m (53 lb in).
NOTE:
Refer to Fastener Notice in Cautions and Notices.
IMPORTANT: DO NOT use the throttle body gasket again. Install a NEW gasket during
assembly.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
2. Install the throttle body gasket (509) to the intake manifold.
Fig. 680: Throttle Body & Nuts
Courtesy of GENERAL MOTORS CORP.
3. Install the throttle body and nuts.
Tighten: Tighten the throttle body nuts to 10 N.m (89 lb in).
4. Install the engine coolant air bleed hose and clamp to the throttle body.
WATER PUMP INSTALLATION
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
Fig. 681: Water Pump, Bolts & Gaskets
Courtesy of GENERAL MOTORS CORP.
1. Install the water pump and NEW gaskets.
2. Install the water pump bolts.
Tighten:
NOTE:
DO NOT use cooling system seal tabs, or similar compounds, 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 to be free of oil or other foreign material during
assembly.
NOTE:
Refer to Fastener Notice in Cautions and Notices.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
1. Tighten the water pump bolts first pass to 15 N.m (11 lb ft).
2. Tighten the water pump bolts final pass to 30 N.m (22 lb ft).
EXHAUST MANIFOLD INSTALLATION - LEFT
Fig. 682: Exhaust Manifold, Gasket & Bolt (Left)
Courtesy of GENERAL MOTORS CORP.
IMPORTANT:
z
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.
z
The cylinder head exhaust manifold bolt hole threads must be clean
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
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