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Fig. 98: Routing Wires To Apply Power For Controlled Bag Deployment (Right ) 30. Route the deployment harness out of the passenger's side of the vehicle. 31. Completely cover the windshield and the front door openings with a drop cloth. 32. Deploy each deployment loop one at a time. 33. Stretch out all of the deployment harness wires on the left and right side of the vehicle to their full length. 34. Place a power source, 12 volt minimum/2 amp minimum, such as a vehicle battery, near the shorted end of the harnesses. 35. Separate one set of wires and touch the wire ends to the power source in order to deploy the seat belt pretensioners. 36. Disconnect the deployment harness from the power source and twist the wire ends together. 37. Continue the same process with the remaining deployment harnesses that are available. 38. Remove the drop cloth from the vehicle. 39. Disconnect all harnesses from the vehicle. 40. Discard the harnesses. 41. Scrap the vehicle in the same manner as a non-SIR equipped vehicle. 42. If one or more of the seat belt pretensioners did not deploy, perform the following steps to remove the undeployed seat belt pretensioner from the vehicle, refer to Seat Belt
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Retractor Pretensioner Replacement - Front (Regular Cab) or Seat Belt Retractor 43. Call the Technical Assistance Group for further assistance. DESCRIPTION AND OPERATION SIR SYSTEM DESCRIPTION AND OPERATION SIR System Overview
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 99: Illustrating Deployed Inflatable Restraint The Supplemental Inflatable Restraint (SIR) System supplements the protection offered by the
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
occupants Seat Belt System (2). The SIR system may contain several inflator modules located Frontal SIR System Description The frontal Supplemental Inflatable Restraint (SIR) System consists of the following components: AIR BAG indicator located on the instrument panel cluster (IPC) Driver and passenger knee bolsters Inflatable restraint front end sensors (left/right) Inflatable restraint PASSENGER AIR BAG ON/OFF indicator Inflatable restraint Passenger Presence System (PPS) Inflatable restraint passenger seat belt tension sensor Inflatable restraint seat position sensor (SPS) (left) Inflatable restraint sensing and diagnostic module (SDM) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Inflatable restraint wiring harnesses Seat belt pretensioners (left/right) Steering wheel and column A frontal collision of sufficient force will deploy the frontal air bags. The SDM contains a
2008 Chevrolet Silverado 1500 2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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