Hummer H2. Manual - part 134

TIMING COVERS 

See Engine Covers, Gaskets, and Grommets (Valve Cover).  

TORQUE STRUTS 

Torque Struts 

Missing 

C 

Require replacement. See caution below. 

CAUTION: Internal engine damage may result from timing belt damage/failure. 

Noisy 

2 

Further inspection required. See note below. 

NOTE: Determine cause of noise and suggest repair. 

Plies separated 

A 

Require replacement. 

Tension out of 
specification 

B 

Require adjustment or replacement. 

Teeth missing 

A 

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. 

Binding 

A 

Require replacement. 

Body dented 

A 

Further inspection required. See 

note below. 

NOTE: Require replacement of units where dents restrict strut piston rod movement. If 
dents don't restrict movement, no service is suggested or required. 

Body punctured 

A 

Require replacement. 

Bushing deteriorated, affecting performance 

A 

Require replacement. 

Bushing deteriorated, not affecting 
performance 

No service suggested or required. 

Bushings missing 

C 

Require replacement. 

Bushings separated from mounting eye 

1 

Suggest replacement. 

Damping (none) 

A 

Require replacement. 

Leaking oil, enough for fluid to be running 
down the body 

A 

Require replacement. 

Missing 

C 

Require replacement. 

Noisy 

2 

Further inspection required. See 

note below. 

NOTE: If noise is isolated to shock or strut, suggest replacement. 

Piston rod bent 

A 

Require replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

  

TRANSMISSION RANGE SWITCHES 

Transmission Range Switches 

Piston rod broken 

A 

Require replacement. 

Seized 

A 

Require replacement. 

Threads damaged 

A 

Require repair or replacement. 

Threads stripped (threads missing) 

A 

Require 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. 

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

  

TUBE CLAMPS 

See Hose and Tube Couplers, Connectors, and Clamps.  

TUBE CONNECTORS 

See Hose and Tube Couplers, Connectors, and Clamps.  

TUBE COUPLERS 

See Hose and Tube Couplers, Connectors, and Clamps.  

TUBES 

See Hoses and Tubes (Fuel Lines, Radiator, By Pass, Heater, Recovery Tank, and Oil Coolers).  

TURBO CHARGERS 

Turbo Chargers 

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 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. 

Boost pressure incorrect 

A 

Require repair or replacement. See note 

below. 

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

Leaking 

A 

Require repair or replacement. 

Noisy 

2 

Suggest repair or replacement. 

Oil seal (internal) leaking 

A 

Require repair or replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

  

VACUUM CONNECTIONS 

See Vacuum Hoses, Tubes, and Connections (Non-metallic).  

VACUUM HOSES, TUBES, AND CONNECTIONS (NON-METALLIC) 

Vacuum Hoses, Tubes, and Connections (Non-metallic) 

VACUUM REGULATOR SOLENOIDS 

Vacuum Regulator Solenoids 

Vibrates 

A 

Require repair or replacement. 

Condition 

Code 

Procedure 

Leaking 

A 

Require repair or replacement. 

Melted 

A 

Require replacement. 

Missing 

C 

Require replacement. 

Oil-soaked (spongy) 

1 

Suggest replacement. 

Restricted 

A 

Require repair or replacement. 

Surface cracks (dry-rotted) 

1 

Suggest 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. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE