Hummer H2. Manual — part 1686
22
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
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
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
25
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
26
Replace the TAC module. Refer to Throttle
Actuator Control (TAC) Module Replacement .
Did you complete the replacement?
-
Go to Step 28
-
27
Replace the PCM. Refer to Powertrain Control
Module (PCM) Replacement .
Did you complete the replacement?
-
Go to Step 28
-
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
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
in
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
in
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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