Hummer H2. Manual — part 131

Secondary Air Injection System Management Devices

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.

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.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

SENSORS AND ACTUATORS

NOTE: Conditions pertaining to the sensors and actuators listed in this section may be found under the name of
the sensor or actuator.

Sensors and Actuators

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.

Sensor

Abbreviation

Accelerator Pedal Position Sensor

APP

Air Conditioning Cycling Switch

AC

Air Conditioning Pressure Sensor

Air Fuel Ratio Sensor

Barometric Pressure Sensor

BARO

Camshaft Position Sensor

CMP

Clutch Pedal Position Switch

CPP

Cooling Fan Motor Sensors and Switches

Crankshaft Position Sensor

CKP

Electronic Transmission Feedback Devices

Engine Coolant Temperature Sensor

ECT

Evaporative Emission feedback devices

Exhaust Gas Recirculation feedback devices

Fan Control Sensor

FC

Intake Air Temperature Sensor

IAT

Knock Sensor

KS

Manifold Absolute Pressure Sensor

MAP

Mass Air Flow Sensor

MAF

O2 Sensor

O2S

Park Neutral Position Switch

PNP

Power Steering Pressure Sensor

PSP

Thermal Vacuum Valve

TVV

Throttle Position Sensor

TP Sensor

Throttle Position Switch

Transmission Range Switch

TR Switch

Vehicle Speed Sensor

VSS

Volume Air Flow Sensor

VAF

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

SHROUDS, BAFFLES, AND DEFLECTORS

Shrouds, Baffles, and Deflectors

SPARK PLUGS

NOTE: You are not required to replace spark plugs in sets. However, you may suggest replacement of the other
plugs for preventive maintenance.

Spark Plugs

Air Injection Control Solenoid

Electronic Transmission control devices

Evaporative Emission Canister Purge Device

EVAP

Exhaust Gas Recirculation Device

EGR

Fuel Injector

Idle Air Control

IAC

Idle Speed Control Actuator

ISC

Mix Control Solenoid

MC Solenoid

Secondary Air Injection System Management Device

AIR, PAIR

Vacuum Regulator Solenoid

Waste Gate Control Solenoid

Condition

Code

Procedure

Application incorrect, affecting cooling system
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.

Bent, affecting cooling system performance

A

Require repair or replacement.

Blocked, affecting cooling system performance A

Require repair or replacement.

Broken, affecting cooling system performance

A

Require repair or replacement.

Cracked, affecting cooling system performance A

Require repair or replacement.

Loose, affecting cooling system performance

A

Require repair.

Loose, not affecting cooling system
performance

2

Suggest repair.

Missing, affecting cooling system performance

C

Require replacement.

Condition

Code

Procedure

Application incorrect

B

Require replacement.

Electrode eroded

1

Suggest replacement.

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

SPRING LOCKS

Spring Locks

SUPER CHARGERS

Super Chargers

SWITCHES

Switches

Fouled

A

Require repair or replacement. See note below.

NOTE: Determine cause of fouling and suggest repair.

Gap incorrect

B

Require repair or replacement.

Insulation broken

A

Require replacement

Insulator cracked

A

Require replacement.

Leaking compression

A

Require repair or replacement.

Maintenance interval

3

Suggest replacement.

Threads damaged

A

Require repair or replacement.

Threads stripped (threads missing) A

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

Attaching hardware damaged, affecting
operation or performance

A

Require repair or replacement of

hardware.

Attaching hardware missing

C

Require replacement of hardware.

Bearing noisy

A

Require replacement.

Bearing worn

A

Require replacement.

Boost pressure incorrect

A

Require repair or replacement. See

note below.

NOTE: Boost pressure problems may be caused by other systems or components.

Clearance out of specification

B

Require repair or replacement.

Leaking

A

Require repair or replacement.

Noisy

2

Suggest repair or replacement.

Threads damaged

A

Require repair or replacement.

Threads stripped (threads missing)

A

Require repair or replacement.

Condition

Code

Procedure

Attaching hardware broken

A

Require repair or replacement of

1998 Chevrolet Pickup C1500

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE