Hummer H2. Manual — part 127

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSORS

Manifold Absolute Pressure (MAP) Sensors

Leaking

A

Require replacement.

Missing

C

Require replacement.

Restricted

A

Require repair or replacement.

Condition

Code

Procedure

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.

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; heck 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.

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

2

Suggest repair or replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

MASS AIR FLOW (MAF) SENSORS

Mass Air Flow (MAF) Sensors

performance

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

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.

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.

Terminal broken

A

Require repair or replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

METAL AIR MANIFOLDS AND PIPES

Metal Air Manifolds and Pipes

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

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.

Broken

A Require repair of injection tube or replacement of

manifold.

Corroded, affecting structural
integrity

1

Suggest replacement of injection tube or

manifold.

Leaking

A Require repair of injection tube or replacement of

manifold.

Loose

A

Require repair.

Missing

C

Require replacement.

Restricted

A

Require replacement of injection tube or

manifold.

Threads damaged

A

Require repair.

Threads stripped (threads
missing)

A

Require replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

METAL AIR PIPES

See Metal Air Manifolds and Pipes.

MIX CONTROL SOLENOIDS

Mix Control Solenoids

Condition

Code

Procedure

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.

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.

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.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE