Envoy 4WD V8-5.3L VIN M (2005)
4. Remove the SIR fuse from the fuse block (1) located in the underhood 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. Remove the grille.
6. Remove sensor bracket from bumper.
7. Remove the connector position assurance (CPA) from both (2) EFS connectors.
IMPORTANT: This vehicle is equipped with 2 inflatable restraint electronic frontal sensors (EFS). When performing this procedure be sure to
include both EFSs.
8. Disconnect both EFS connectors.
ENABLING PROCEDURE
1. Remove the key from the ignition.
2. Connect the EFS connectors to both (2) EFS.
3. Install the CPAs to both EFS connectors.
4. Install sensor bracket to bumper.
5. Install the grille.
