Hummer H2. Manual — part 115

repairs.

Carburetors and Chokes

CASTING CORE PLUGS AND EXPANSION PLUGS

Casting Core Plugs and Expansion Plugs

CHARGE AIR COOLERS "INTERCOOLERS" (CAC)

Charge Air Coolers "Intercoolers" (CAC)

Condition

Code

Procedure

Air/fuel control incorrect

B

Require repair or replacement.

Application incorrect

B

Require repair or 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.

Components binding

A

Require repair or replacement.

Components damaged, affecting
operation or performance

A

Require repair or replacement.

Components missing

C

Require replacement of components.

Contaminated

A

Require repair or replacement. Further

inspection required. See note below.

NOTE: Some components may be serviceable; check for accepted cleaning procedure.
Determine source of contamination, such as engine coolant, fuel, metal particles, or
water. Require repair or replacement.

Controlling linkages binding

A

Require repair or replacement of linkage.

Leaking

A

Require repair or replacement.

Mechanical operation incorrect

B

Require repair or replacement.

Operating incorrectly

B

Require repair or replacement.

Condition

Code

Procedure

Leaking

A

Require replacement.

Material type incorrect

2

Suggest replacement.

Condition

Code

Procedure

Air-to-air intercooler leaking, affecting boost
performance

A

Require repair or 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.

Leaking coolant

A

Require repair or replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

CHECK VALVES

See Aspirator, Check, and Decel Valves.

CHOKES

See Carburetors and Chokes.

CLUTCH PEDAL POSITION SWITCHES

Clutch Pedal Position Switches

Missing

C

Require replacement.

Restricted, affecting performance

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 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.

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.

Missing

C

Require replacement.

Resistance out of specification

B

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

B

Require repair or replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

COLD START INJECTORS

See Fuel and Cold Start Injectors.

CONNECTORS

See Wiring Harnesses and Connectors.

COOLANT

Coolant

COOLANT RECOVERY TANKS

Coolant Recovery Tanks

performance

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

Acidity (pH)
incorrect

1

Suggest correction or replacement.

Contaminated

B

Require replacement or recycling. Further inspection

required. See note below.

NOTE: Determine source of contamination and require correction prior to coolant
replacement.

Level low

B

Require filling to proper level. See note below.

NOTE: Determine source of incorrect level and suggest repair.

Maintenance intervals

3

Suggest replacement. See note below.

NOTE: The system should be drained and/or flushed and refilled with correct coolant
according to OEM recommended service interval and procedures.

Mixture incorrect

B

Require correction or replacement.

Type incorrect

B

Require replacement.

Condition

Code

Procedure

Attaching hardware broken

A

Require repair or replacement of hardware.

Attaching hardware missing

C

Require replacement of hardware.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

COOLING FAN MOTOR MODULES

See Cooling Fan Motor Relays and Modules.

COOLING FAN MOTOR RELAYS AND MODULES

Cooling Fan Motor Relays and Modules

Attaching hardware not functioning

A

Require repair or replacement of hardware.

Leaking

A

Require repair or replacement.

Missing (if original equipment)

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.

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.

Housing cracked

2

Suggest 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.

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.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE