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Hummer H2. Manual - part 1686

connector.

3. Test the TAC module ignition feed circuit

for a short to battery voltage. Refer to
Circuit Testing and Wiring Repairs in
Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 23

1. Turn ON the ignition.

2. Test both TAC motor circuits for a short to

voltage. Refer to Circuit Testing and
Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 24

Test for poor connections at the TAC module
harness connector. Refer to Testing for
Intermittent Conditions and Poor Connections
and Repairing Connector Terminals in Wiring
Systems.
Did you find and correct the condition?

Go to Step 28

Go to Step 26

Test for poor connections at the PCM harness
connector. Refer to Testing for Intermittent
Conditions and Poor Connections and
Repairing Connector Terminals in Wiring
Systems.
Did you find and correct the condition?

Go to Step 28

Go to Step 27

Replace the TAC module. Refer to Throttle
Actuator Control (TAC) Module Replacement .
Did you complete the replacement?

Go to Step 28

Replace the PCM. Refer to Powertrain Control
Module (PCM) Replacement .
Did you complete the replacement?

Go to Step 28

1. Clear the DTCs with a scan tool.

2. Turn OFF the ignition for 30 seconds.

3. Start the engine.

4. Operate the vehicle within the Conditions

for Running the DTC. You may also operate
the vehicle within the conditions that you
observed from the Freeze Frame/Failure
Records.

Did the DTC fail this ignition?

Go to Step 2

Go to Step 29

Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?

Go to Diagnostic

Trouble Code

(DTC) List

System OK

2004 Hummer H2

2004 ENGINE PERFORMANCE Engine Controls Diagnosis (DTC P0507 (TAC) To DTC U0107) - 4.8L, 5.3L, and 6.0L -

Hummer H2

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2004 ENGINE

Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

Application

Specification

Metric English

A/C Belt Tensioner Bolt

50 N.m 37 lb ft

Air Cleaner Outlet Duct Clamp Screws

7 N.m 62 lb in

Automatic Transmission Bolt/Stud

50 N.m 37 lb ft

Automatic Transmission Oil Level Indicator Tube Nut

18 N.m 13 lb ft

Battery Cable Channel Bolt

12 N.m

106 lb

Camshaft Retainer Bolts

25 N.m 18 lb ft

Camshaft Sensor Bolt

25 N.m 18 lb ft

Camshaft Sprocket Bolts

35 N.m 26 lb ft

Connecting Rod Bolts - First Pass

20 N.m 15 lb ft

Connecting Rod Bolts - Final Pass

75 degrees

Coolant Temperature Gauge Sensor

20 N.m 15 lb ft

Crankshaft Balancer Bolt - Installation Pass - to Ensure the Balancer is Completely
Installed

330

N.m

240 lb ft

Crankshaft Balancer Bolt - First Pass - Install a NEW Bolt After the Installation Pass
and Tighten as Described in the First and Final Passes

50 N.m 37 lb ft

Crankshaft Balancer Bolt - Final Pass

140 degrees

Crankshaft Bearing Cap Bolts - Inner Bolts - First Pass in Sequence

20 N.m 15 lb ft

Crankshaft Bearing Cap Bolts - Inner Bolts - Final Pass in Sequence

80 degrees

Crankshaft Bearing Cap Bolts - Outer Bolts - First Pass in Sequence

20 N.m 15 lb ft

Crankshaft Bearing Cap Bolts - Outer Bolts - Final Pass in Sequence

51 degrees

Crankshaft Bearing Cap Side Bolts

25 N.m 18 lb ft

Crankshaft Oil Deflector Nuts

25 N.m 18 lb ft

Crankshaft Position Sensor Bolt

25 N.m 18 lb ft

Crossbar Bolts

100

N.m

74 lb ft

Cylinder Head Bolts - First Design - First Pass all M11 Bolts in Sequence

30 N.m 22 lb ft

Cylinder Head Bolts - First Design - Second Pass all M11 Bolts in Sequence

90 degrees

Cylinder Head Bolts - First Design - Final Pass all M11 Bolts in Sequence - Excluding
the Medium Length Bolts at the Front and Rear of Each Cylinder Head

90 degrees

Cylinder Head Bolts - First Design - Final Pass M11 Medium Length Bolts at the

50 degrees

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Front and Rear of Each Cylinder Head
Cylinder Head Bolts - Second Design - First Pass all M11 Bolts in Sequence

30 N.m 22 lb ft

Cylinder Head Bolts - Second Design - Second Pass all M11 Bolts in Sequence

90 degrees

Cylinder Head Bolts - Second Design - Final Pass all M11 Bolts in Sequence

70 degrees

Cylinder Head Bolts - M8 Inner Bolts in Sequence

30 N.m 22 lb ft

Cylinder Head Coolant Plug

20 N.m 15 lb ft

Drive Belt Idler Pulley Bolt

50 N.m 37 lb ft

Engine Block Coolant Drain Plugs

60 N.m 44 lb ft

Engine Block Heater

40 N.m 30 lb ft

Engine Block Oil Gallery Plugs

60 N.m 44 lb ft

Engine Block Wire Harness Rear Ground Bolt

16 N.m 12 lb ft

Engine Coolant Air Bleed Pipe and Cover Bolts

12 N.m

106 lb

Engine Flywheel Bolts - First Pass

20 N.m 15 lb ft

Engine Flywheel Bolts - Second Pass

50 N.m 37 lb ft

Engine Flywheel Bolts - Final Pass

100

N.m

74 lb ft

Engine Front Cover Bolts

25 N.m 18 lb ft

Engine Lift Bracket Bolt - M8

25 N.m 18 lb ft

Engine Lift Bracket Bolt - M10

50 N.m 37 lb ft

Engine Mount Bracket-to-Engine Bolt

50 N.m 37 lb ft

Engine Mount Through Bolt

75 N.m 55 lb ft

Engine Mount-to-Frame Bracket Bolt

65 N.m 48 lb ft

Engine Protection Shield Bolts

30 N.m 22 lb ft

Engine Rear Cover Bolts

25 N.m 18 lb ft

Engine Service Lift Bracket M8 Bolt

25 N.m 18 lb ft

Engine Service Lift Bracket M10 Bolts

50 N.m 37 lb ft

Engine Sight Shield Bolts

10 N.m 89 lb in

Engine Sight Shield Bracket Bolts

5 N.m 45 lb in

Engine Valley Cover Bolts

25 N.m 18 lb ft

Evaporative Emission (EVAP) Purge Solenoid Bolt

10 N.m 89 lb in

Exhaust Manifold Bolts - First Pass

15 N.m 11 lb ft

Exhaust Manifold Bolts - Final Pass

25 N.m 18 lb ft

Exhaust Manifold Heat Shield Bolts

9 N.m 80 lb in

Fuel Rail Bolts

10 N.m 89 lb in

Fuel Rail Crossover Tube Bolts

3.8

N.m

34 lb in

Fuel Rail Stop Bracket Bolt

50 N.m 37 lb ft

Generator Bolt

50 N.m 37 lb ft

Generator Bracket Bolts

50 N.m 37 lb ft

Generator Output Terminal Nut

9 N.m 80 lb in

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

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