Field testing involved a total of 11 snowplow fleets in various regions across the U.S. and Canada. There is not sufficient front axle reserve capacity to balance the additional load of the snowplow. As long as the push bumper or bicycle rack is attached to your vehicle so that the vehicle's basic structure isn't changed, it's not likely to keep the air bag from working properly in a crash. The air bag supplements the protection provided by the shoulder belts. Remember, the air bag is designed to inflate in moderate to severe frontal and near-frontal crashes.
Safety belts can provide protection in impacts other than frontal and near-frontal collisions.
Set the volume at the desired level. As you drive, the SCV automatically increases the volume, as necessary, to overcome road and wind noise at any particular speed. The volume should always sound the same. Each clockwise position on the control ring allows for more compensation at a faster rate. Repairs are covered under warranty ONLY when performed by an authorized GMC dealer.