OnStar / B2470 04

Read the instructions below then start the fault diagnostic procedure.

Symptom: Not possible to call OnStar Call Center (OCC).

B2470 04

Fault symptom

Not possible to call OnStar Call Center (OCC).

On-board diagnosis

Type of diagnosis:

Continuous

Fault criteria:

The control module does not detect any signal from the telephone antenna for more than 1 second

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Electrical fault in connecting leads or component.