Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Unable To Receive Incoming ONSTAR Or HFC (Hands Free Calling) Calls (PIC6101)
Reference number: PIC6101
UNABLE TO RECEIVE INCOMING ONSTAR OR HFC (HANDS FREE CALLING) CALLS
TECHNICAL SERVICE BULLETIN
| Affected Model(s): | 2002-2009 All GM Passenger Car and Light Duty Trucks Equipped with OnStar Generation 6.4, 6.11, 6.15, 7.0, 7.04, or 7.045 |
SERVICE INFORMATION
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
CONDITION/CONCERN
Some OnStar Gen 6.11, 6.15, 7.0, 7.04, and 7.045 customers may report they are unable to receive OnStar HFC (Hands Free Calling) calls and/or the OnStar center is unable to perform remote services.
RECOMMENDATION/INSTRUCTIONS
Place a test call to OnStar using the OnStar Blue button and verify the system successfully connects to an advisor.
Place an outbound personal call from the vehicle and verify it connects.
Place an inbound call to the vehicle making sure to dial using the 11 digit phone number (1+area code+number).
If outbound calls can be placed and only incoming calls fail. Cycle power to the VCIM and retest inbound call to the vehicle.
If the power cycle corrects the concern and the module manufacturer is continental. Replace the VCIM.
If the power cycle corrects the concern and the module manufacturer is LG. Please record information from the latest version of PIC4310 and call GM Technical assistance for further assistance
If the concern is still present after the power cycle. Please record information from the latest version of PIC4310 and call GM Technical assistance for further assistance.
DO NOT perform a Set-Up New VCIM / OnStar. If the setup has been performed. Please make sure to provide this info to GM TAC for diagnostic assistance.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.