This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Microphone
Cellular antenna
Navigation antenna
Blueto
The Emergency Road Assistance Global Navigation Satellite System (ERA GLONASS)
consists of the
following components:
Telematics communication interface control module
Telematics two button assembl
This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Microphones
Cellular antenna
Navigation antenna
Back
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis: Refer to Strategy
Based Diagnosis
An overview of each diagnostic category can be found here: R
Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels and
underpasses; or in an area with
very dense trees. If GPS signals
are not available, the OnStar
system should still operate to
call OnStar. However, OnStar
could have d