This OnStar® system consists of the following components:
This system also interfaces with the factory installed vehicle audio system.
The telematics communication interface control module is a cellular device that allows the user to communicate data and voice signals over the national cellular network. Power is provided by a dedicated, fused B+ circuit. Ground is provided through the vehicle wiring harness attached to the module. The ignition state is determined by the telematics communication interface control module through serial data messaging.
Dedicated circuits are used to connect the telematics communication interface control module to a microphone, the button assembly, and to command the status LED. The telematics communication interface control module communicates with the rest of the vehicle over the serial data bus.
The module houses 2 technology systems, one to process GPS data, and another for cellular information. The cellular system connects the OnStar® system to the cellular carrier’s communication system by interacting with the national cellular infrastructure. The module sends and receives all cellular communications over the cellular antenna and cellular antenna coax. GPS satellites orbiting earth are constantly transmitting signals of their current location. The OnStar® system uses the GPS signals to provide location on demand.
The module also has the capability of activating the horn, initiating door lock/unlock, or activating the exterior lamps using the serial data circuits. These functions can be commanded by the OnStar® Call Center per a customer request.
The telematics communication interface control module supplies 10 volts to the OnStar® button assembly on the keypad supply voltage circuit. When pressed, each button completes a circuit across a resistor allowing a specific voltage to be returned to the telematics communication interface control module on the keypad signal circuit. Depending upon the voltage range returned the telematics communication interface control module is able to identify which button has been pressed.
The OnStar® status LED is located with the button assembly. The LED is green when the system is ON and operating normally. When the status LED is green and flashing, it is an indication that a call is in progress. When the LED is red, this indicates a system malfunction is present. In the event there is a system malfunction and the OnStar® system is still able to make a call, the LED will flash red during the call.
If the mirror has the rear vision camera disp
Instrument Panel Lower Trim Pad Cover Replacement (With AAL)
Instrument Panel Lower Trim Pad Cover Replacement
Callout
Component Name
Preliminary Procedure
Disable the SIR system. Refer to SIR Disabling and Enabling.
1
Instrument Panel Lower Trim Pad Fastener ...
Rear Side Door Trim Replacement (Sedan)
Rear Side Door Trim Replacement
Callout
Component Name
1
Rear Side Door Inside Handle Bolt Cap
2
Rear Side Door Inside Handle Fastener
Caution: Refer to Fastener Caution.
Proce ...
Wheel Drive Shaft Outer Joint Inspection
Disassembly Procedure
Remove the outer constant velocity (CV) joint and boot from the wheel
drive shaft. Refer to Front Wheel Drive Shaft Outer Joint and Boot Replacement.
Remove any lubricant from the CV joint.
Note: Position the cage and the inner race so they a ...