The passenger presence sensor in the front passenger seat is malfunctioning and spare parts to replace it are not available from the manufacturer. The Chevrolet dealership has inspected and verified this issue, and the system is available for inspection upon request. This is the same issue that NHTSA investigated in the 2013 model described below. This sensor failure results in a check airbag signal and prevents the deployment of the passenger frontal and knee air bags, posing risk of serious injury to passengers. The PSS may develop a malfunction due to bunching of the sensor mat in the seat trench. The bunching of the sensor mat could cause the mat to repeatedly fold in the same location. Over time, the repeated folding can cause an increased resistance in the sensor mat. An increased resistance in the PSS sensor mat is detected as a fault in the air bag system diagnostic. If this fault is detected, a diagnostic trouble code will be stored in the air bag control unit and the air bag MIL will illuminate. Further, if the fault is detected, the passenger frontal and knee air bags will be suppressed in a crash of sufficient severity to warrant a commanded deployment regardless of the nature of size of the occupant of the front passenger seat.

- Kanata, MT, USA

The service airbag request keeps showing up and I was told it was the Passenger presence module and sensor. This puts people at risk of the airbag not deploying correctly.

- Jacksonville, FL, USA

"service airbag" warning on 2015 Volt, which apparently is a well-known issue for which General Motors refuses to take any responsibility. Airbags should not be a concern on car--ever. They want over $800 for the repair when it is clearly a manufacturing defect.

- Chattanooga, TN, USA

Car was purchased used on 9/12/18 with 50K miles and soon after purchase the service airbag warning pops up intermittently everyday during short or long drives. Common complaint is passenger airbag sensor but I have not taken it to be diagnosed since common repair costs is over 800 dollars.

- Tampa, FL, USA

When a passenger gets out of the front passenger seat a warning will flash saying to service the airbag. Problem will persists until the car is shut off and won't show up again until a passenger sits in the front passenger seat again. Seems to be a problem with the passenger occupancy sensor. The problem has persisted since beginning of ownership approx. 1 month ago, and continues until the date of this report.

- Holloman Afb, NM, USA

The service air bag message intermittently turns on and off for no reason. Car has not been in an accident.

- Hampstead, MD, USA