Hummer H2. Manual - part 2047

REPAIRS AND INSPECTIONS REQUIRED AFTER A COLLISION

Accident With or Without Inflator Module Deployment - Component Inspections 

After any collision, inspect the following components as indicated. If you detect any damage, replace the 
component. If you detect any damage to the mounting points or mounting hardware, repair or replace the 
mounting points and mounting hardware as needed. 

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The steering column - Perform the steering column accident damage checking procedures. Refer to 
Steering Column Accident Damage Inspection in Steering Wheel and Column.  

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The I/P knee bolsters and mounting points - Inspect the knee bolsters for bending, twisting, buckling, or 
any other type of damage.  

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The I/P brackets, braces, etc.- Inspect for bending, twisting, buckling, or any other type of damage.  

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The seat belts - Perform the seat belt operational and functional checks. Refer to Operational and 
Functional Checks in Seat Belts.  

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The I/P cross car beam - Inspect for bending, twisting, buckling, or any other type of damage.  

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The I/P mounting points and brackets - Inspect for bending, twisting, buckling, or any other type of 
damage.  

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The seats and seat mounting points - Inspect for bending, twisting, buckling, or any other type of damage. 

Accident With Frontal Air Bag Deployment - Component Replacement and Inspections 

After a collision involving air bag deployment, replace the following components. If you detect any damage to 
the mounting points or mounting hardware, repair or replace the mounting points and mounting hardware as 
needed. 

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Inflatable restraint I/P module  

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Inflatable restraint steering wheel module  

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Inflatable restraint steering wheel module coil  

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Inflatable restraint sensing and diagnostic module (SDM)  

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Inflatable restraint electronic frontal sensor (EFS)  

Perform additional inspections on the following components. 

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Steering wheel module coil and the coil wiring pigtail - Inspect for melting, scorching, or other damage 
due to excessive heat.  

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Mounting points or mounting hardware for the I/P module, steering wheel module, SDM, and EFS sensor 
- Inspect for any damage and repair or replace each component as needed. 

CAUTION: Proper operation of the SIR sensing system requires that any repairs to 

the vehicle structure return the vehicle structure to the original production 
configuration. Not properly repairing the vehicle structure could cause 
non-deployment in a collision or deployment for conditions less severe 
than intended.

 

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Sensor Replacement Guidelines 

The SIR/side air bag sensor replacement policy requires replacing sensors in the area of accident damage. The 
area of accident damage is defined as the portion of the vehicle which is crushed, bent, or damaged due to a 
collision. An example of this would be a moderate collision where the front of the vehicle impacts a tree, if the 
vehicle has an SIR sensor mounted forward of the radiator, replace the SIR sensor. 

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Replace the sensor whether or not the air bags have deployed.  

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Replace the sensor even if the sensor appears to be undamaged.  

Sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire 
insulation, can cause improper operation of the SIR/side air bag sensing system. Do not try to determine 
whether the sensor is undamaged. Replace the sensor. Also, if you follow a Diagnostic Trouble Code (DTC) 
table and a malfunctioning sensor is indicated, replace the sensor. 

INFLATOR MODULE HANDLING AND SCRAPPING 

Live (Undeployed) Inflator Modules 

CAUTION: Refer to SIR Inflator Module Handling and Storage Caution in Cautions and 

Notices.

 

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Fig. 59: Handling Undeployed Inflator Module 
Courtesy of GENERAL MOTORS CORP. 

Use special care when handling or storing live, undeployed, inflator modules. Inflator module deployment 
produces a rapid generation of gas. This may cause the inflator module, or an object in front of the inflator 
module, to project through the air in the event of an unlikely deployment. 

Scrapping Procedures 

During the course of a vehicle's useful life, certain situations may arise which will require the disposal of a live, 

 

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undeployed, inflator module. Do not dispose of a live, undeployed, inflator module through normal disposal 
channels until the inflator module has been deployed. The following information covers the proper procedures 
for disposing of a live, undeployed, inflator module. 

Do not deploy an inflator module in the following situations: 

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After replacement of an inflator module under warranty. The inflator module may need to be returned 
undeployed to the manufacturer.  

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If the vehicle is the subject of a product liability report (GM-1241) related to the SIR system. When a 
vehicle is the subject of a product liability report, do not alter the SIR system in any manner.  

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If the vehicle is involved in a campaign affecting the inflator modules. Follow the instructions in the 
Campaign Service Bulletin for proper SIR handling procedures.  

Deployment Procedures 

Inflator modules can be deployed inside or outside of the vehicle. The method used depends upon the final 
disposition of the vehicle. Review the following procedures in order to determine which will work best in a 
given situation. 

Deployment Outside Vehicle-IP Module and Steering Wheel Module 

Deploy inflator modules outside of the vehicle when the vehicle will be returned to service. Situations that 
require deployment outside of the vehicle include the following: 

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Using the SIR diagnostics, you determine that the inflator module is malfunctioning.  

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The inflator module is cosmetically damaged (scratched or ripped).  

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The inflator module pigtail, if equipped, is damaged.  

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The inflator module connector is damaged.  

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The inflator module connector terminals are damaged.  

Deployment and disposal of a malfunctioning inflator module is subject to any required retention period. 

Tools Required 

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J 38826 SIR Deployment Harness. See Special Tools and Equipment .  

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J 39401-B SIR Deployment Fixture. See Special Tools and Equipment .  

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An appropriate pigtail adaptor  

1. Turn OFF the ignition.  

2. Remove the ignition key.  

CAUTION: Refer to SIR Inflator Module Disposal Caution in Cautions and Notices.

 

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2004 RESTRAINTS SIR - Hummer H2