Hummer H2. Manual — part 130

POWERTRAIN CONTROL MODULES (PCM) AND PROM

Powertrain Control Modules (PCM) and PROM

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

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.

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, failure to perform all functions, or
out of OEM specification.

Missing

C

Require replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

POWERTRAIN CONTROL PROM

See Powertrain Control Modules (PCM) and PROM.

PRESSURIZED EXPANSION TANK CAPS

See Radiator Caps and Pressurized Expansion Tank Caps.

RADIATOR CAPS AND PRESSURIZED EXPANSION TANK CAPS

Radiator Caps and Pressurized Expansion Tank Caps

RADIATOR FAN BLADES

Radiator Fan Blades

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.

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.

Coolant recovery check valve inoperative

A

Require replacement. See note below.

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

Fails to maintain proper pressure

B

Require replacement.

Gasket missing

C

Require replacement of gasket.

Missing

C

Require replacement.

Seal missing

C

Require replacement of seal.

Condition

Code

Procedure

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

RADIATOR FAN CLUTCHES

NOTE: Some lateral movement, measured at the fan blade tip, may be normal.

Radiator Fan Clutches

RADIATORS

Radiators

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.

Bent

A

Require replacement.

Broken

A

Require replacement.

Cracked

A

Require replacement.

Loose

A

Require repair or replacement.

Missing

C

Require 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.

Bearing noisy

A

Require replacement.

Bearing worn

A

Require replacement.

Fastener loose

A

Require repair or replacement of fastener.

Inoperative

A

Require replacement. See note below.

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

Leaking

1

Suggest replacement.

Seized

A

Require replacement.

Slips (insufficient fan speed)

A

Require replacement.

Thermal control incorrect

B

Require repair or replacement.

Condition

Code

Procedure

Air flow restriction

A

Require repair.

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.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

ROLL OVER VALVES

Roll Over Valves

SEALING COMPOUNDS

Sealing Compounds

SEALS

Seals

SECONDARY AIR INJECTION SYSTEM MANAGEMENT DEVICES

Connection leaking

A

Require repair or replacement.

Corroded

1

Suggest repair or replacement.

Fins damaged, affecting performance

A

Require repair or replacement.

Fins damaged, not affecting performance

2

Suggest repair or replacement.

Internal oil cooler leaking

A

Require repair or replacement.

Internal restrictions, affecting performance B

Require repair or replacement.

Internal restrictions, not affecting
performance

2

Suggest repair or replacement.

Leaking

A

Require repair or replacement.

Threads damaged

A

Require repair or replacement.

Threads stripped (threads missing)

A

Require repair or replacement.

Tubes damaged, affecting performance

A

Require repair or replacement.

Tubes damaged, not affecting
performance

No service suggested or required.

Condition

Code

Procedure

Inoperative

A

Require replacement. See note below.

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

Leaking

A

Require replacement.

Missing

C

Require replacement.

Condition

Code

Procedure

Leaking

A

Require repair or replacement. See note below.

NOTE: Require inspection of mating and sealing surface and repair or replace as
necessary.

Condition

Code

Procedure

Leaking

A

Require repair or replacement. See note below.

NOTE: Require inspection of mating and sealing surface and repair or replace as
necessary.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE