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6. If all circuits test normal, replace the inflatable restraint passenger air bag on/off indicator. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for IPC and SDM replacement, setup, and programming Inflatable Restraint Instrument Panel Module Indicator Replacement SIR DISABLING AND ENABLING SIR component location affects how a vehicle should be serviced. There are parts of the SIR There are several reasons for disabling the SIR system, such as repairs to the SIR system or SIR Service Precautions Condition Action If the vehicle was involved in an accident Disconnect the negative battery cable(s) *. When performing SIR diagnostics. Follow the appropriate SIR service manual When removing or replacing an SIR Disconnect the negative battery cable(s) * If the vehicle is suspected of having shorted Disconnect the negative battery cable(s) * When performing electrical diagnosis on Remove the SIR/Airbag fuse(s) when * DTCs will be lost when the negative battery cable is disconnected. CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Failure to
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. General Service Instructions The following are general service instructions which must be followed in order to properly repair 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 Use only original GM replacement parts available from your authorized GM dealer. Do not Discard any of the following components if it has been dropped from a height of 91 cm (3 feet) or Inflatable restraint sensing and diagnostic module (SDM) Any Inflatable restraint air bag module Inflatable restraint steering wheel module coil Any Inflatable restraint sensor Inflatable restraint seat belt pretensioners Inflatable restraint Passenger Presence System (PPS) module or sensor Disabling Procedure - Air Bag Fuse 1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead. 2. Place the ignition in the OFF position. observe the correct procedure could cause deployment of the IMPORTANT: The SDM may have more than one fused power input. To ensure there is no unwanted SIR deployment, personal injury,
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to SIR Schematics or Electrical Center Identification Views . 4. Wait 1 minute before working on the system. Enabling Procedure - Air Bag Fuse 1. Place the ignition in the OFF position. 2. Install the fuse(s) supplying power to the SDM. Refer to SIR Schematics or Electrical Center Identification Views . 3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF. 4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle . Disabling Procedure - Negative Battery Cable 1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead. 2. Place the ignition in the OFF position. 3. Disconnect the negative battery cable from the battery. Refer to Battery Negative Cable Disconnection and Connection (w/Single Battery) or Battery Negative Cable 4. Wait 1 minute before working on system. Enabling Procedure - Negative Battery Cable 1. Place the ignition in the OFF position. 2. Connect the negative battery cable to the battery. Refer to Battery Negative Cable Disconnection and Connection (w/Single Battery) or Battery Negative Cable 3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn or unnecessary SIR system repairs, remove all fuses
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
OFF. 4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle . REPAIR INSTRUCTIONS SIR SERVICE PRECAUTIONS The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. General Service Instructions The following are general service instructions which must be followed in order to properly repair 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 Use only original GM replacement parts available from your authorized GM dealer. Do not Discard any of the following components if it has been dropped from a height of 91 cm (3 ft) or Inflatable restraint sensing and diagnostic module (SDM) Inflatable restraint I/P module Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Inflatable restraint roof side rail modules Inflatable restraint side impact sensors (SIS) CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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