Hummer H2. Manual - part 90

FORCE MOTORS 

See Actuators (Electrical).  

GUIDES 

See Dowel Pins, Guides, and Pilot Holes.  

HALF SHAFTS 

See Drive Shafts and Half Shafts  

HOSES, LINES, AND TUBES 

Hoses, Lines, and Tubes 

Surface cracks after resurfacing to 
manufacturer's minimum specifications 

B 

Require replacement. 

Wear exceeds specifications 

B 

Require replacement. 

Worn, not affecting performance, but close to 
the end of its useful life 

1 

Suggest repair or replacement. 

Worn, affecting performance 

A 

Require repair or replacement. 

Threads damaged 

A 

Require repair or replacement. 

Threads stripped (threads missing) 

A 

Require replacement. 

Condition 

Code 

Procedure 

Application incorrect 

B 

Require replacement. 

Connected incorrectly 

A 

Require repair. 

Corroded, not reusable 

1 

Suggest replacement. 

Cracked line or tube 

A 

Require replacement. 

Surface cracked (weather-checked) 

1 

Suggest repair or 

replacement. 

Hard hose 

1 

Suggest 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. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards DRIVE TRAIN AND TRANSMISSION

  

HOUSINGS (BELL, CASE, TAIL (EXTENSION) AND AUXILIARY) 

Housings (Bell, Case, Tail (Extension) and Auxiliary) 

INTERMEDIATE SHAFT SUPPORT BEARINGS 

Intermediate Shaft Support Bearings 

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 

2 

Suggest replacement of 

sleeves. 

Restricted, affecting performance 

A 

Require repair or 

replacement. 

Restricted, not affecting performance 

2 

Suggest repair or 

replacement. 

Routed incorrectly 

2 

Suggest 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 

replacement. 

Condition 

Code 

Procedure 

Bearing race loose in bore 

A 

Require repair or replacement. 

Broken, affecting performance 

A 

Require repair or replacement. 

Cracked 

A 

Require repair or replacement. 

Dowel pin holes worn, affecting performance 

See Dowel Pins, Guides, and Pilot 

Holes. 

Machined surfaces damaged, affecting 
performance 

A 

Require repair or replacement. 

Threads damaged 

A 

Require repair or replacement. 

Threads stripped (threads missing) 

A 

Require replacement. 

Worn, affecting performance 

A 

Require repair or replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards DRIVE TRAIN AND TRANSMISSION

  

KEY INTERLOCK SYSTEMS 

See Shift Interlock Systems (Selector and Key Interlock Systems). 

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 rollers, balls or races are worn, pitted, noisy, 
or feel rough when rotated as an assembly 

A 

Require replacement of 

bearing assembly. 

Bracket bent, affecting performance 

A 

Require repair or 

replacement. 

Bracket bent, not affecting performance 

No service suggested or 

required. 

Bracket broken, affecting performance 

A 

Require replacement. 

Bracket broken, not affecting performance 

2 

Suggest repair or 

replacement of bracket. 

Bracket corroded, affecting performance 

A 

Require repair or 

replacement. 

Bracket corroded, not affecting performance 

2 

Suggest repair or 

replacement. 

Bracket cracked, affecting performance 

A 

Require repair or 

replacement. 

Bracket cracked, not affecting performance 

1 

Suggest repair or 

replacement. 

Bracket holes elongated, affecting performance 

A 

Require repair or 

replacement. 

Bracket holes elongated, not affecting performances) 

No service suggested or 

required. 

Bracket loose, affecting performance 

A 

Require repair or 

replacement. 

Bracket loose, not affecting performance 

1 

Suggest repair or 

replacement. 

Bracket missing 

C 

Require replacement. 

Cracked 

A 

Require replacement. 

Rough (brinelling, spalling) 

A 

Require replacement. 

Rubber deteriorated, affecting performance 

A 

Require replacement. 

Seized 

A 

Require replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards DRIVE TRAIN AND TRANSMISSION

  

LIMITED SLIPS 

See Differential Assembly  

LINES 

See Hoses, Lines, and Tubes.  

LINKAGES (EXTERNAL) 

Linkages (External) 

LOCKING HUB ASSEMBLIES 

Locking Hub Assemblies 

Condition 

Code 

Procedure 

Components missing 

C 

Require replacement of missing 

components. 

Linkage bent, affecting performance 

A 

Require repair or replacement of 

linkage. 

Linkage bent, not affecting performance 

2 

Suggest repair or replacement of 

linkage. 

Linkage binding, affecting performance 

A 

Require repair or replacement of 

linkage. 

Linkage binding, not affecting performance 

1 

Suggest repair or replacement of 

linkage. 

Linkage broken 

A 

Require repair or replacement of 

linkage. 

Linkage loose, affecting performance 

A 

Require repair or replacement of 

linkage. 

Linkage loose, not affecting performance 

1 

Suggest repair or replacement of 

linkage. 

Linkage missing 

C 

Require replacement. 

Linkage noisy 

2 

Suggest repair or replacement. 

Out of adjustment 

B 

Require repair or replacement. 

Worn to the extent that it no longer performs its 
intended function 

A 

Require repair or replacement. 

Condition 

Code 

Procedure 

Inoperative 

A 

Require repair or replacement. 

NOTE: Inoperative includes intermittent operation. 

Loose 

A 

Require repair or replacement. 

Seized in any position 

A 

Require repair or replacement. 

 

1998 Chevrolet Pickup C1500 

Uniform Inspection and Communication Standards DRIVE TRAIN AND TRANSMISSION