Hummer H2. Manual — part 122

FUEL DAMPERS

See Fuel Accumulators and Dampers.

FUEL DELIVERY CHECK VALVES

Fuel Delivery Check Valves

FUEL DISTRIBUTORS (BOSCH CIS)

Fuel Distributors (Bosch CIS)

NOTE: Inoperative includes intermittent operation, out of OEM specification. Some
components may be serviceable.

Leaking

A

Require repair or replacement.

Resistance 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.

Threads damaged

A

Require repair or replacement.

Threads stripped (threads
missing)

A

Require replacement.

Condition

Code

Procedure

Inoperative

A

Require replacement. See note below.

NOTE: Inoperative includes intermittent operation or out of OEM specification.

Leaking externally

A

Require repair or replacement.

Missing

C

Require replacement.

Pressure leaking (bleeds down)

A

Require repair or replacement.

Condition

Code

Procedure

Inoperative

A

Require repair or replacement. Further inspection

required. See note below.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

FUEL FILLER NECKS AND RESTRICTORS

Fuel Filler Necks and Restrictors

FUEL FILTERS

Fuel Filters

FUEL INJECTORS

Fuel Injectors

NOTE: Inoperative includes intermittent operation.

Leaking

A

Require repair or replacement.

Out of specification

B

Require repair or replacement.

Restricted, affecting
performance

A

Require repair or replacement. Further inspection

required. See note below.

NOTE: Some components may be serviceable; check for accepted cleaning procedure.

Condition

Code

Procedure

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.

Leaking

A

Require repair or replacement.

Missing

C

Require replacement.

Restricted

2

Suggest repair or replacement.

Condition

Code

Procedure

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.

Leaking

A

Require repair or replacement.

Maintenance interval

3

Suggest replacement to comply with OEM

recommended service interval.

Missing

C

Require replacement.

Restricted, affecting
performance

A

Require replacement.

Restricted, not affecting
performance

1

Suggest replacement.

Water-contaminated

2

Suggest replacement.

Condition

Code

Procedure

Attaching hardware missing

C

Require replacement of hardware.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

Attaching hardware threads
damaged

A

Require repair or replacement of hardware.

Attaching hardware threads
stripped (threads missing)

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.

NOTE: Determine cause and correct prior to repair or replacement of part.

Connector missing

C

Require replacement.

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.

Inoperative

B

Require repair or replacement. Further

inspection required. See note below.

NOTE: Inoperative includes intermittent operation or out of OEM specification. Some
components may be serviceable; check for accepted cleaning procedure.

Leaking

A

Require repair or replacement.

Missing

C

Require replacement.

Resistance out of specification

B

Require repair or replacement.

Restricted, affecting performance

A

Require repair or replacement.

Restricted, not affecting
performance

2

Suggest repair or 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.

Threads stripped (threads missing)

A

Require replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

FUEL LEVEL SENDERS

Fuel Level Senders

FUEL PRESSURE REGULATORS

Fuel Pressure Regulators

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

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.

Inoperative

A

Require repair or replacement. See note

below.

NOTE: Inoperative includes intermittent operation or out of OEM specification.

Leaking

A

Require repair or 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

Contaminated

2

Suggest repair or replacement. Further inspection

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE