Silverado 2008

Multi-Function Switch

Print

Removal & Installation




NOTE
Do not disconnect the negative battery cable from the battery until a period of at least one minute has passed after performing the following: turning the ignition to OFF, without pausing at ACC, and without applying the brake pedal. These steps are necessary to allow the brake system pressure relief procedure to occur. Failure to follow these steps may result in warning lamps and/or DTC-s being set pertaining to interruption of the pressure relief procedure. Other vehicle systems may also be affected by not allowing a one minute duration for vehicle power down.

To disconnect the negative battery cable, proceed as follows. Turn off all lamps and accessories. Turn the ignition OFF without pausing at ACC, remove the ignition key. Wait at least one minute before disconnecting the negative battery cable from the battery. Reposition the negative battery cable cover from the terminal. Rotate the lock lever counterclockwise in order to disconnect the cable from the battery.


NOTE
After performing the service procedure, to connect the negative battery cable, rotate the lock lever clockwise until an audible click is heard. Position the cover over the terminal.

  1. Before servicing the vehicle, refer to the Precautions Section.
    NOTE
    When performing service on or near the SRS components, or SRS wiring the SRS must be disabled. Failure to observe the correct procedure could cause deployment of the SRS components. Serious injury can occur.



    Click image to see an enlarged view

    Fig. SRS and related components

  2.  
  3. Position the steering wheel so the front wheels are in the straight ahead position.
  4.  
  5. Be sure the ignition switch is in the OFF position.
  6.  
  7. Disconnect the negative battery cable.
    NOTE
    The SDM may have more than one fused power input. To ensure that there is no unwanted SRS deployment, personal injury, or unnecessary SRS system repairs, remove all fuses supplying power to the SDM. With all SDM fuses removed and the ignition switch in the ON position, the AIR BAG warning indicator will illuminate. This is normal and does not indicate a SRS system malfunction.

  8.  
  9. Locate and remove the fuses supplying power to the SDM.
  10.  
  11. Wait one minute before working on the vehicle.
  12.  
  13. Remove the steering wheel.

    Click image to see an enlarged view

    Fig. Steering wheel and related components



    Click image to see an enlarged view

    Fig. Upper and lower steering column shrouds and related components

  14.  
  15. Remove the steering column shrouds.
  16.  
  17. Unfasten the screws from the switch and remove the switch. Detach the electrical connection.

    Click image to see an enlarged view

    Fig. Multi-function switch and related components

  18.  

To install:

  1. Installation is the reverse of removal. Tighten the switch mounting screws to 27 inch lbs. (3 Nm).
  2.  
  3. To enable the SRS system, be sure the ignition switch is in the OFF position.
  4.  
  5. Install the fuses.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Turn the ignition switch to the ON position.
  10.  
  11. If the system is operating properly the AIR BAG indicator will flash.
  12.  
  13. Correct problems as required.
  14.  

 
label.common.footer.alt.autozoneLogo