Hummer H2. Manual — part 125
IGNITION BOOTS
See Ignition Wires, Boots, Coil Towers, and Terminals (Secondary).
IGNITION COIL TOWERS
See Ignition Wires, Boots, Coil Towers, and Terminals (Secondary).
IGNITION COILS
Ignition Coils
Terminal burned, affecting
performance
A
Require repair or replacement. See note
below.
NOTE: Determine cause and correct prior to repair or replacement of part.
Terminal burned, not affecting
performance
2
Suggest repair or replacement.
Terminal corroded, affecting
performance
A
Require repair or replacement.
Terminal corroded, not affecting
performance
2
Suggest repair or replacement.
Terminal loose, affecting
performance
B
Require repair or replacement.
Terminal loose, not affecting
performance
1
Suggest repair or replacement.
Threads damaged
A
Require repair or replacement.
Threads stripped (threads missing)
A
Require replacement.
Wire lead conductors exposed
B
Require repair or replacement.
Wire lead corroded
A
Require repair or replacement.
Wire lead open
A
Require repair or replacement.
Wire lead shorted
A
Require repair or replacement.
Condition
Code
Procedure
Arcing
A
Require replacement.
Attaching hardware broken
A
Require repair or replacement of
hardware.
Attaching hardware missing
C
Require replacement of hardware.
Attaching hardware not functioning
A
Require repair or replacement of
hardware.
Connector broken
A
Require repair or replacement.
Connector (Weatherpack type) leaking
A
Require repair or replacement.
Connector melted
A
Require repair or replacement. See note
below.
1998 Chevrolet Pickup C1500
Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE
IGNITION CONTROL MODULES (ICM)
Ignition Control Modules (ICM)
NOTE: Determine cause and correct prior to repair or replacement of part.
Connector missing
C
Require replacement.
Corroded, affecting performance
A
Require replacement.
Corroded, not affecting performance
2
Suggest replacement.
Distorted
No service suggested or required. See note
below.
NOTE: Distortion may be the result of overheating; coil should be tested.
Inoperative
A
Require replacement. See note below.
NOTE: Inoperative includes intermittent operation.
Oil leaking
A
Require replacement.
Out of specification
B
Require replacement.
Terminal broken
A
Require repair or replacement.
Terminal burned, affecting
performance
A
Require repair or replacement. See note
below.
NOTE: Determine cause and correct prior to repair or replacement of part.
Terminal burned, not affecting
performance
2
Suggest repair or replacement.
Terminal corroded, affecting
performance
A
Require repair or replacement.
Terminal corroded, not affecting
performance
2
Suggest repair or replacement.
Terminal loose, affecting performance
B
Require repair or replacement.
Terminal loose, not affecting
performance
1
Suggest repair or replacement.
Wire lead conductors exposed
B
Require repair or replacement.
Wire lead corroded
A
Require repair or replacement.
Wire lead open
A
Require repair or replacement.
Wire lead shorted
A
Require repair or replacement.
Condition
Code
Procedure
Application incorrect
B
Require replacement.
Attaching hardware missing
C
Require replacement of hardware.
Attaching hardware threads damaged
A
Require repair or replacement of
hardware.
Attaching hardware threads stripped
(threads missing)
A
Require repair or replacement of
hardware.
Code set (if applicable)
A
Further inspection required. See note
below.
1998 Chevrolet Pickup C1500
Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE
IGNITION SWITCHES
See Switches.
IGNITION TERMINALS
See Ignition Wires, Boots, Coil Towers, and Terminals (Secondary).
IGNITION WIRES, BOOTS, COIL TOWERS, AND TERMINALS (SECONDARY)
NOTE: Refer to manufacturer's diagnostic trouble code procedure and require repair or
replacement of affected component(s).
Connector broken
A
Require repair or replacement.
Connector (Weatherpack type) leaking
A
Require repair or replacement.
Connector melted
A
Require repair or replacement. See
note below.
NOTE: Determine cause and correct prior to repair or replacement of part.
Connector missing
A
Require repair.
Contaminated
A
Require repair or replacement. See
note below.
NOTE: Determine source of contamination, such as engine coolant, fuel, metal particles,
or water. Require repair or replacement.
Leaking
A
Require repair or replacement.
Malfunctioning
A
Require repair or replacement. See
note below.
NOTE: Includes inoperative, intermittent operation, or failure to perform all functions.
Missing
C
Require replacement.
Terminal broken
A
Require repair or replacement.
Terminal burned, affecting performance
A
Require repair or replacement. See
note below.
NOTE: Determine cause and correct prior to repair or replacement of part.
Terminal burned, not affecting performance
2
Suggest repair or replacement.
Terminal corroded, affecting performance
A
Require repair or replacement.
Terminal corroded, not affecting
performance
2
Suggest repair or replacement.
Terminal loose, affecting performance
B
Require repair or replacement.
Terminal loose, not affecting performance
1
Suggest repair or replacement.
Threads damaged
A
Require repair or replacement.
Wire lead conductors exposed
B
Require repair or replacement.
Wire lead corroded
A
Require repair or replacement.
Wire lead open
A
Require repair or replacement.
Wire lead shorted
A
Require repair or replacement.
1998 Chevrolet Pickup C1500
Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE
NOTE: You are not required to replace ignition wires in sets. However, you may suggest replacement of the
entire secondary wire set for preventive maintenance.
Ignition Wires, Boots, Coil Towers, and Terminals (Secondary)
IN-TANK FUEL STRAINERS
In-Tank Fuel Strainers
Condition
Code
Procedure
Application incorrect
B
Require replacement.
Attaching hardware broken
A
Require repair or replacement of
hardware.
Attaching hardware missing
C
Require replacement of hardware.
Attaching hardware not functioning
A
Require repair or replacement of
hardware.
Carbon-tracked
A
Require replacement.
Corroded
1
Suggest repair or replacement.
Insulation leaking (shorted)
A
Require repair or replacement.
Metal heat shield bent
2
Suggest repair or replacement.
Missing
C
Require replacement.
Oil-soaked (spongy)
1
Suggest replacement.
Resistance incorrect
B
Require replacement.
Routed incorrectly
2
Suggest repair. See note below.
NOTE: If improper routing affects the performance of other systems, require repair.
Proper routing, hardware, heatshields, etc., are intended to prevent premature failure of
secondary ignition components.
Terminal broken
A
Require repair or replacement.
Terminal burned, affecting
performance
A
Require repair or replacement. See note
below.
NOTE: Determine cause and correct prior to repair or replacement of part.
Terminal burned, not affecting
performance
2
Suggest repair or replacement.
Terminal corroded, affecting
performance
A
Require repair or replacement.
Terminal corroded, not affecting
performance
2
Suggest repair or replacement.
Terminal loose, affecting performance
B
Require repair or replacement.
Terminal loose, not affecting
performance
1
Suggest repair or replacement.
Condition
Code
Procedure
Missing
C
Require replacement.
Restricted
A
Require repair or replacement.
1998 Chevrolet Pickup C1500
Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE
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