REPAIR INSTRUCTIONS

SIR SERVICE PRECAUTIONS

CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury or unnecessary SIR system repairs.

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

General Service Instructions

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:

• Do not handle the inflatable restraint vehicle rollover sensor when connected to vehicle power.

• Do not expose inflator modules to temperatures above 65°C (150°F).

• Verify the correct replacement part number. Do not substitute a component from a different vehicle.

• Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

Discard any of the following components if it has been dropped from a height of 91 cm (3 ft) or greater:

• Inflatable restraint front end sensor

• Inflatable restraint instrument panel (I/P) module

• Inflatable restraint passenger presence system (PPS)

• Inflatable restraint roof rail module

• Inflatable restraint SDM

• Inflatable restraint side impact sensor (SIS)

• Inflatable restraint steering wheel module

• Inflatable restraint steering wheel module coil

• Inflatable restraint vehicle rollover sensor

• Seat belt pretensioner

INFLATABLE RESTRAINT FRONT END SENSOR REPLACEMENT Removal Procedure

CAUTION: Do not strike or jolt the inflatable restraint front end sensor. Before applying power to the front end sensor make sure that it is securely fastened. Failure to observe the correct installation procedure could cause SIR deployment, personal injury or unnecessary SIR system repairs.

CAUTION: Refer to SIR Caution.

1. Disable the SIR system. Refer to SIR Disabling and Enabling.

2. Remove the engine shield. Refer to Engine Shield Replacement.

3. Loosen the fasteners (1) retaining the front discriminating sensors to the radiator support.

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REPAIR INSTRUCTIONS

Fig. 30: View Of Discriminating Sensor Courtesy of GENERAL MOTORS CORP.

4. Remove the sensor assembly from the radiator support.

5. Position the sensor assembly, to gain access to the electrical connector.

1

REPAIR INSTRUCTIONS

Fig. 31: View Of Inflatable Restraint Front End Sensor Courtesy of GENERAL MOTORS CORP.

6. Remove the connector-position assurance (CPA) from the sensor electrical connector.

7. Disconnect the sensor electrical connector.

8. Remove the sensor (1) from the vehicle.

Installation Procedure

1. Remove any dirt, grease or other impurities from the mounting surfaces.

2. Position the sensor (1) near the radiator support.

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REPAIR INSTRUCTIONS

Fig. 32: View Of Inflatable Restraint Front End Sensor Courtesy of GENERAL MOTORS CORP.

3. Connect the sensor electrical connector.

4. Install the CPA to the sensor electrical connector.

5. Install the sensor assembly to the radiator support.

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REPAIR INSTRUCTIONS

Fig. 33: View Of Discriminating Sensor Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice.

6. Install the 2 fasteners (1) retaining the discriminating sensor assembly to the radiator support.

Tighten: Tighten the bolts to 9 N. m (80 lb in).

7. Install the engine shield. Refer to Grille Replacement.

8. Enable the SIR system. Refer to SIR Disabling and Enabling. INFLATABLE RESTRAINT SIDE IMPACT SENSOR REPLACEMENT

REPAIR INSTRUCTIONS

Fig. 34: Inflatable Restraint Side Impact Sensor Replacement Courtesy of GENERAL MOTORS CORP.

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

Inflatable Restraint Side Impact Sensor Replacement

Callout~ I Component Name______________________

CAUTION:

When performing service on or near the SIR components or the SIR wiring, the SIR system must be

disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury or unnecessary SIR system repairs.

CAUTION:

Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury or unnecessary SIR system repairs.

NOTE:

Refer to Fastener Notice.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

1. Disable the SIR. Refer to SIR Disabling and Enabling.

2. Remove the door trim panel. Refer to Front Side Door Trim Panel Replacement.

1

Bolt, Inflatable Restraint Side Impact Sensor Assembly (Qty: 2) Tip: Loosen the bolts and slide the sensor out of the key hole slots.

Tighten: 9 N. m (80 lb in)

2

Sensor Assembly, Inflatable Restraint Side Impact

INFLATABLE RESTRAINT VEHICLE ROLLOVER SENSOR REPLACEMENT

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

REPAIR INSTRUCTIONS

Fig. 35: Inflatable Restraint Vehicle Rollover Sensor Replacement Courtesy of GENERAL MOTORS CORP.

Inflatable Restraint Vehicle Rollover Sensor Replacement

Callout

Component Name

CAUTION:

When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury or unnecessary SIR system repairs.

NOTE:

Refer to Fastener Notice.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications. Preliminary Procedure

1. Disable the SIR. Refer to SIR Disabling and Enabling.

2. Remove the center console. Refer to Console Replacement (Left Hand Drive) or

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

Console Replacement (Right Hand Drive) .

1

Nut, Inflatable Restraint Vehicle Rollover Sensor (Qty: 4) Tighten: 10 N. m (89 lb in)

2

Sensor Assembly, Inflatable Restraint Vehicle Rollover

INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE REPLACEMENT

REPAIR INSTRUCTIONS

Fig. 36: Inflatable Restraint Sensing and Diagnostic Module Replacement Courtesy of GENERAL MOTORS CORP.

Inflatable Restraint Sensing and Diagnostic Module Replacement

Callout

Component Name

CAUTION:

When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury or unnecessary SIR system repairs.

CAUTION:

Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of

the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury or unnecessary SIR system repairs.

NOTE:

Refer to Fastener Notice.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications. Preliminary Procedure

1. Disable the SIR. Refer to SIR Disabling and Enabling.

2. Remove the center console. Refer to Console Replacement (Left Hand Drive) or Console Replacement (Right Hand Drive) .

3. Program the inflatable restraint sensing and diagnostic module after replacing. Refer to Control Module References.

1

Nut, Inflatable Restraint Sensing and Diagnostic Module (Qty: 4) Tighten: 10 N. m (89 lb in)

2

Module, Inflatable Restraint Sensing and Diagnostic

INFLATABLE RESTRAINT STEERING WHEEL MODULE REPLACEMENT

REPAIR INSTRUCTIONS

Fig. 37: Replacing Inflatable Restraint Steering Wheel Module Courtesy of GENERAL MOTORS CORP.

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

Inflatable Restraint Steering Wheel Module Replacement

Callout~ I Component Name______________________

CAUTION:

Refer to SIR Inflator Module Handling and Storage Caution.

CAUTION:

Refer to SIR Caution.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications. Preliminary Procedures

1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling.

2. On back side of the steering wheel shroud are 2 openings, place the wheel so that one opening is on top.

3. Using a blunt-ended tool, push the spring fastener inward through the access hole. Repeat the step for the other opening.

Module, Steering Wheel Inflatable Restraint Tip:

1. Release the connector position assurance (CPA) retainer.

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2. Disconnect the electrical connectors.

3. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to Inflator Module Handling and Scrapping.

INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL REPLACEMENT Removal Procedure

IMPORTANT: The inflatable restraint steering wheel module coil and the multifunction turn signal switch are serviced as an assembly.

CAUTION: Refer to SIR Caution.

1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling.

2. Remove the steering wheel. Refer to Steering Wheel Replacement.

3. Remove the steering column trim covers. Refer to Steering Column Trim Covers Replacement.

REPAIR INSTRUCTIONS

Fig. 38: View Of Wire Harness Straps & Assembly Courtesy of GENERAL MOTORS CORP.

4. Remove the wire harness straps from the wire harness assembly.

5. Disconnect any electrical connectors as needed.

REPAIR INSTRUCTIONS

Fig. 39: View Of Multifunction Switch/SIR Coil Assembly Courtesy of GENERAL MOTORS CORP.

6. Remove the inflatable restraint steering wheel module coil bolts.

7. Slide the inflatable restraint steering wheel module coil off of the steering column. Discard the inflatable restraint steering wheel module coil, if replacing.

Installation Procedure

IMPORTANT: A new inflatable restraint steering wheel module coil will come precentered with a centering tab attached. Do NOT remove the centering tab until installation is complete. Failure to follow procedure will cause a misalignment and re­centering of the inflatable restraint steering wheel module coil will be required.

If reusing the existing inflatable restraint steering wheel module coil, you must center the inflatable restraint steering wheel module coil. Refer to Inflatable Restraint Steering Wheel Module Coil Centering.

REPAIR INSTRUCTIONS

Fig. 40: View Of Multifunction Switch/SIR Coil Assembly Courtesy of GENERAL MOTORS CORP.

1. Slide the inflatable restraint steering wheel module coil onto the steering column. NOTE: Refer to Fastener Notice.

2. Install the inflatable restraint steering wheel module coil bolts.

Tighten: Tighten the bolts to 4.5 N. m (40 lb in).

REPAIR INSTRUCTIONS

Fig. 41: View Of Wire Harness Straps & Assembly Courtesy of GENERAL MOTORS CORP.

3. Route the wiring harness assembly down the steering column.

4. Connect any electrical connectors as needed.

5. Install the wire harness straps to the wire harness assembly.

6. Remove the centering tab from the inflatable restraint steering wheel module coil, if equipped.

7. Install the steering column trim covers. Refer to Steering Column Trim Covers Replacement.

8. Install the steering wheel. Refer to Steering Wheel Replacement.

9. Enable the SIR system. Refer to SIR Disabling and Enabling.

INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL CENTERING

REPAIR INSTRUCTIONS

Fig. 42: View Of Block Tooth Of Steering Shaft Assembly In 12 O’clock Position Courtesy of GENERAL MOTORS CORP.

NOTE: The new SIR coil assembly will be centered. Improper

alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.

IMPORTANT: The SIR coil and multifunction, turn signal switch are serviced as an assembly.

IMPORTANT: If double wire harness strap is installed onto the wire

harness assembly and column, you must reuse the holder for the wire straps during installation.

Remove the wire harness strap(s) where necessary.

1. Verify the following conditions before centering the SIR coil:

• The wheels on the vehicle are straight ahead.

• The block tooth (1) of the steering shaft assembly is in the 12 o'clock position.

• The ignition switch is in the LOCK position.

REPAIR INSTRUCTIONS

Fig. 43: Rotating SIR Coil

Courtesy of GENERAL MOTORS CORP.

2. To center the coil perform the following:

• Rotate the inner portion of the SIR coil clockwise till it stops.

• Rotate the inner portion of the SIR coil counterclockwise 3 1/2 turns till the indicator marks line up (2).

• At this time the steering wheel harness (1) should be at the 12 o'clock position.

• This indicates that the SIR coil is now centered and can be installed to the steering column.

INFLATABLE RESTRAINT INSTRUMENT PANEL MODULE REPLACEMENT Removal Procedure

CAUTION: Refer to SIR Caution. CAUTION: Refer to SIR Inflator Module Handling and Storage Caution .

1. Disable the SIR System. Refer to SIR Disabling and Enabling.

2. Remove the instrument panel (I/P) center trim panel. Refer to Instrument Panel Center Trim Panel Replacement (Left Hand Drive) or Instrument Panel Center Trim Panel Replacement (Right Hand Drive) .

3. Remove the radio. Refer to Radio Replacement.

4. Remove the right access cover from the I/P end cap.

5. Remove the right air outlet. Refer to Instrument Panel Outer Air Outlet Replacement - Right Side.

6. Remove the I/P compartment door. Refer to Instrument Panel Compartment Door Replacement.

7. Remove the digital radio receiver, if equipped. Refer to Digital Radio Receiver Replacement.

REPAIR INSTRUCTIONS

Fig. 44: View Of I/P Compartment Door Opening Service Holes Courtesy of GENERAL MOTORS CORP.

8. Access the 2 fasteners located above the service holes (1) inside the I/P compartment door opening.

REPAIR INSTRUCTIONS

Fig. 45: View Of PSIR Inflator Module Fasteners Courtesy of GENERAL MOTORS CORP.

9. Remove the fasteners from the passenger supplemental inflatable restraint (PSIR) inflator module.

REPAIR INSTRUCTIONS

Fig. 46: View Of PSIR Module Retaining Nuts Courtesy of GENERAL MOTORS CORP.

10. Remove the 2 side retaining nuts (1) from the PSIR module.

REPAIR INSTRUCTIONS

Fig. 47: View Of PSIR Module Courtesy of GENERAL MOTORS CORP.

11. Partially remove the PSIR inflator module from the I/P.

12. Disconnect the connector position assurance (CPA).

13. Disconnect the electrical connector from the PSIR module.

14. Remove the PSIR inflator module from the vehicle.

15. Fully deploy the module before disposal. If the module is being replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to Inflator Module Handling and Scrapping.

IMPORTANT: If the PSIR module has deployed while attached to the I/P, the PSIR bracket MUST be replaced.

16. If replacing the PSIR bracket, remove the I/P assembly. Refer to Instrument Panel Assembly Replacement (Left Hand Drive) or Instrument Panel Assembly Replacement (Right Hand Drive) .

REPAIR INSTRUCTIONS

Fig. 48: View Of PSIR Bracket To I/P Structure Fasteners Courtesy of GENERAL MOTORS CORP.

17. Remove the 2 fasteners retaining the PSIR bracket to the I/P structure.

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

REPAIR INSTRUCTIONS

Fig. 49: View Of PSIR Bracket Courtesy of GENERAL MOTORS CORP.

18. Remove the PSIR bracket from the vehicle.

Installation Procedure

2007 Hummer H3

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

REPAIR INSTRUCTIONS

Fig. 50: View Of PSIR Bracket Courtesy of GENERAL MOTORS CORP.

1. If replacing the PSIR bracket, install the PSIR bracket to the I/P structure.

REPAIR INSTRUCTIONS

Fig. 51: View Of PSIR Bracket To I/P Structure Fasteners Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice.

2. Install the 2 fasteners retaining the PSIR bracket to the I/P structure.

Tighten: Tighten the fasteners to 9 N. m (80 lb in).

3. Install the I/P assembly. Refer to Instrument Panel Assembly Replacement (Left Hand Drive) or Instrument Panel Assembly Replacement (Right Hand Drive) .

REPAIR INSTRUCTIONS

Fig. 52: View Of PSIR Module Courtesy of GENERAL MOTORS CORP.

4. Position the PSIR inflator module to the front of the I/P and connect the electrical connector.

5. Connect the CPA.

6. Install the PSIR inflator module to the I/P.

REPAIR INSTRUCTIONS

Fig. 53: View Of PSIR Inflator Module Fasteners Courtesy of GENERAL MOTORS CORP.

7. Partially Install the 2 lower fasteners retaining the PSIR module to the I/P structure.

REPAIR INSTRUCTIONS

Fig. 54: View Of PSIR Module Retaining Nuts Courtesy of GENERAL MOTORS CORP.

8. Install the 2 side retaining nuts (1) to the PSIR inflator module.

Tighten: Tighten the 4 PSIR fasteners until fully driven, seated and not stripped.

9. Install the digital radio receiver, if equipped. Refer to Digital Radio Receiver Replacement.

10. Install the radio. Refer to Radio Replacement.

11. Install the I/P center trim panel. Refer to Instrument Panel Center Trim Panel Replacement (Left Hand Drive) or Instrument Panel Center Trim Panel Replacement (Right Hand Drive) .

12. Install the right air outlet. Refer to Instrument Panel Outer Air Outlet Replacement - Right Side.

13. Install the right access cover to the I/P end cap.

14. Enable the SIR System. Refer to SIR Disabling and Enabling.

15. Install the I/P compartment door. Refer to Instrument Panel Compartment Door Replacement.

INFLATABLE RESTRAINT SEAT POSITION SENSOR REPLACEMENT Removal Procedure

1. Remove the seat from the vehicle. Refer to Front Seat Replacement - Bucket.

2. Ensure that the seat is in the full rear position.

REPAIR INSTRUCTIONS

3

Fig. 55: View Of Seat Position Switch Courtesy of GENERAL MOTORS CORP.

3. Locate the seat position sensor (1) under the seat on the inside of the inner seat rail.

4. Disconnect the electrical connector (3) from the seat position sensor (1).

5. Remove the 2 screws that retain the seat position sensor to the seat rail.

6. Remove the seat position sensor from the seat.

Installation Procedure

REPAIR INSTRUCTIONS

3

Fig. 56: View Of Seat Position Switch Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice.

1. Install the seat position sensor (1) to the seat rail with 2 screws.

Tighten: Tighten the seat position sensor screws to 9 N. m (79 lb in).

2. Connect the electrical connector (3) to the seat position sensor (1).

3. Install the seat in the vehicle. Refer to Front Seat Replacement - Bucket.

INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM REPLACEMENT - FRONT

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

REPAIR INSTRUCTIONS

Fig. 57: Inflatable Restraint Passenger Presence System Replacement - Front Courtesy of GENERAL MOTORS CORP.

Inflatable Restraint Passenger Presence System Replacement - Front

Callout

Component Name

CAUTION:

Replace the passenger presence system as a complete assembly to prevent possible injury to the

occupant. All the components in the service kit are assembled and calibrated as a unit. Using only some of the components in the service kit will cause the passenger presence system to operate improperly.

NOTE:

Refer to Fastener Notice.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications. Preliminary Procedure

1. Remove the front bucket seat. Refer to Front Seat Replacement - Bucket.

2. Remove the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement.

3. Re-zero the inflatable restraint passenger presence system whenever the seat cushion or any component of the passenger presence system is removed. Refer to Passenger Presence System Programming and Setup.

4. Program the inflatable restraint passenger presence system after replacement. Refer to Control Module References.

1

Retainer, Inflatable Restraint Passenger Presence System (Qty: 2)

2

Sensor, Inflatable Restraint Passenger Presence System Tip: Disconnect the electrical connector.

3

Screw, Inflatable Restraint Passenger Presence System Module (Qty: 2) Tighten: 8 N. m (71 lb in)

4

Module, Inflatable Restraint Passenger Presence System Tip: Disconnect the electrical connector.

ROOF SIDE RAIL INFLATABLE RESTRAINT MODULE REPLACEMENT - FRONT

2007 RESTRAINTS Supplemental Inflatable Restraints - H3

REPAIR INSTRUCTIONS

Fig. 58: Inflatable Restraint Roof Rail Module Replacement - Front Courtesy of GENERAL MOTORS CORP.

Roof Side Rail Inflatable Restraint Module Replacement - Front

Callout

Component Name

CAUTION:

Refer to SIR Caution.

CAUTION:

When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury or unnecessary SIR system repairs.

CAUTION:

Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury or unnecessary SIR system repairs.

NOTE:

Refer to Fastener Notice.

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