Hummer H3. Manual — part 277

Fig. 21: Identifying Engine Exhaust Components
Courtesy of GENERAL MOTORS CORP.

Callouts For Fig. 21

Callout

Component Name

600

Exhaust Manifold

601

Exhaust Manifold Gasket

602

Exhaust Manifold Bolt

603

Exhaust Manifold Heat Shield

604

Exhaust Manifold Heat Shield Stud

605

Exhaust Manifold Heat Shield Nut

700

Ignition Control Module

701

Ignition Control Module Spring

702

Ignition Control Module Boot

703

Exhaust Camshaft Position Sensor

704

Exhaust Camshaft Position Sensor Bolt

705

EVAP Emission Canister Purge Solenoid

706

EVAP Emission Canister Purge Solenoid Bolt

707

Knock Sensor Bolt

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

ENGINE IDENTIFICATION

Fig. 22: Locating Engine ID Tag
Courtesy of GENERAL MOTORS CORP.

Callouts For Fig. 22

708

Knock Sensor

709

Knock Sensor

710

Intake Camshaft Sensor

711

Intake Camshaft Sensor Bolt

712

Crankshaft Position Sensor

Callout

Component Name

1

Engine ID Location

2

Engine ID Location

3

The first digit identifies the engine build location - All first digits will be
a T, this engine is only being built at Tonawanda

4

The second and third digits identifies the build year

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

SCHEMATIC AND ROUTING DIAGRAMS

TIMING CHAIN ALIGNMENT DIAGRAM

5

The fourth, fifth and sixth digits identify the build month - Julian Date

6

The seventh through tenth digits identify the engine build sequence

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3