Hummer H2. Manual - part 124

HOSE AND TUBE COUPLERS, CONNECTORS, AND CLAMPS 

NOTE: When replacing fuel lines and hoses, replace with product that meets or exceeds OEM design 
specifications.  

Hose and Tube Couplers, Connectors, and Clamps 

HOSE CLAMPS 

See Hose and Tube Couplers, Connectors, and Clamps.  

HOSE CONNECTORS 

See Hose and Tube Couplers, Connectors, and Clamps.  

HOSE COUPLERS 

See Hose and Tube Couplers, Connectors, and Clamps.  

HOSES AND TUBES (FUEL LINES, RADIATOR, VACUUM, BY PASS, HEATER, RECOVERY 
TANK, AND OIL COOLERS) 

Bypassed 

A 

Require repair or replacement. 

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 restrictions, affecting 
performance 

A 

Require repair or replacement. 

Leaking 

A 

Require repair or replacement. 

Missing 

C 

Require replacement. 

Condition 

Code 

Procedure 

Application incorrect 

B 

Require replacement. 

Connected incorrectly 

A 

Require repair. 

Corroded, not reusable 

1 

Suggest replacement. 

Cracked 

A 

Require replacement. 

Insufficient clamping force, allowing hose to 
leak 

A 

Require repair or replacement. 

Leaking 

A 

Require repair or replacement. 

Missing 

C 

Require replacement. 

Safety clip missing (not leaking) 

C 

Require replacement of safety 

clip. 

Stripped 

A 

Require replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

  

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

Condition 

Code 

Procedure 

Application incorrect 

B 

Require replacement. 

Connected incorrectly 

A 

Require repair. 

Corroded, not reusable 

1 

Suggest replacement. 

Cracked 

A 

Require replacement. 

Dry-rotted 

1 

Suggest repair or 

replacement. 

Hard 

1 

Suggest repair or 

replacement. 

Inner fabric (webbing) damaged 

A 

Require replacement. 

Insufficient clamping force, allowing hose to leak 

A 

Require repair or 

replacement. 

Leaking 

A 

Require repair or 

replacement. 

Maintenance intervals 

3 

Suggest replacement. 

Melted 

1 

Suggest repair or 

replacement. 

Missing 

C 

Require replacement. 

Outer covering damaged 

1 

Suggest replacement. 

Outer covering damaged to the extent that the inner 
fabric is visible 

A 

Require replacement. 

Protective sleeves damaged 

2 

Suggest replacement of 

sleeves. 

Protective sleeves missing 

C 

Require replacement of 

sleeves. 

Restricted, affecting performance 

A 

Require repair or 

replacement. 

Restricted, not affecting performance 

2 

Suggest repair or 

replacement. 

Routed incorrectly, where failure is likely to occur 

B 

Require repair or 

replacement. 

Safety clip missing 

C 

Require replacement. 

Spongy 

1 

Suggest repair or 

replacement. 

Stripped 

A 

Require replacement. 

Swollen 

B 

Require replacement. 

Threads damaged 

A 

Require repair or 

replacement. 

Threads stripped (threads missing) 

A 

Require replacement. 

Type incorrect 

1 

Suggest repair or 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

  

HOUSINGS 

See Thermostats and Housings.  

IDLE AIR CONTROLS 

Idle Air Controls 

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. 

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. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE

  

IDLE SPEED CONTROL ACTUATORS 

Idle Speed Control Actuators 

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 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. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards ENGINE PERFORMANCE AND MAINTENANCE