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Randall C
Randall C, ASE Master Tech
Category: Chevy
Satisfied Customers: 12890
Experience:  ASE Master, L1, 32 years, Diagnostic / Electrical Specialist
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1500 silverado front left impact sensor location and how do

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1500 silverado front left impact sensor location and how do you change it
hello, You will need to disable zone 1. Shown below. the sensors are located under the lower radiator support in front of vehicle. see below.

SIR DISABLING AND ENABLING ZONE 1

DISABLING PROCEDURE


  1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead. IMPORTANT: Refer to SIR Service Precautions before disabling the SIR system.
  2. Turn OFF the ignition.
  3. Remove the key from the ignition.
  4. Remove the SIR fuse from the fuse block. IMPORTANT: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.
  5. Raise and support the vehicle.



  1. Remove the connector position assurance (CPA) from both front end sensor connectors (2) located on the frame crossmember (1). IMPORTANT: This vehicle is equipped with two inflatable restraint front end sensors. When performing this procedure be sure to include both front end sensors.
  2. Disconnect both front end sensor connectors (2).
ENABLING PROCEDURE



  1. Remove the key from the ignition.



  1. Connect the front end sensor connectors (2) to both front end sensors.
  2. Install the CPAs to both front end sensor connectors (2).
  3. Install the SIR fuse into the fuse block.
  4. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
  1. The AIR BAG indicator will flash 7 times.
  2. The AIR BAG indicator will then turn OFF.
  1. Perform the Diagnostic System Check - Vehicle in Vehicle DTC Information, if the AIR BAG indicator does not operate as described.


INFLATABLE RESTRAINT FRONT END SENSOR REPLACEMENT

REMOVAL PROCEDURE


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



  1. Disconnect the electrical connector.
  2. Remove the connector position assurance (CPA) from the connector.
  3. Remove the sensor bolt.
  4. Remove the sensor (2) from the vehicle.
INSTALLATION PROCEDURE


  1. Remove any dirt, grease, or other contaminants from the mounting surface (1).
  2. Point the arrow on the sensor toward the front of the vehicle. IMPORTANT: Refer to SIR Service Precautions.



  1. Install the sensor (2) horizontally to the radiator support. NOTE: Refer to Fastener Notice in Service Precautions. Tighten the bolt to 9 N.m (79 lb in) .
  2. Connect the electrical connector to the sensor (2).
  3. Install the CPA.
  4. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 1.


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