Escalade V8-5.7L VIN R (2000)
The following numbers refer to the steps in the table.
3. Check for proper operation of the OnStar (R) Center Button.
4. Check for proper operation of the OnStar (R) Call Answer/Call End Button.
5. Check for proper operation of the OnStar (R) Emergency Button.
9. Determine OnStar (R) Button Assembly has the necessary power and signal circuits.
UNO/ULO: For a description of the RPO Code(s) shown in this article refer to the RPO Code List found at Vehicle/Application ID See: Application
and ID/RPO Codes
Operator Unable to Hear Caller - OnStar
Diagnostic Chart
TEST DESCRIPTION
The following numbers refer to the steps in the table.
2. This step that the OnStar (R) call will go through. It is possible that the call may take up to 3 minutes to complete.
3. This checks the operation of the microphone. The operator may say that this call is a "Voice call with no data". This does not mean that the
microphone is operating properly.
4. This step inspects that the microphone circuit from the Microphone to the VIU.
5. This step inspects Microphone circuit between the VIU and the VCU.
Unable To Contact Call Center - OnStar