Buy OEM Buick Part # 86824937 (25820342). Air Bag Impact Sensor (Front). 3/4 & 1 ton. Silverado, Sierra; 2500, 3500. Air Bag Crash Sensor - Repair or Replace An airbag or SRS

Sensor. Impact.
A Sensor to determine the location on the vehicle of Impact and the severity of the Impact to determine if and which air bags should be deployed. Air Bag. Ft. Side.

Air Bag Impact Sensor

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

3/4 & 1 ton. Silverado, Sierra; 2500, 3500.
Air Bag Crash Sensor - Repair or Replace
An airbag or SRS light can sometimes indicate a problem with the impact sensor on your Buick , particularly if it's been involved in a collision—at any speed. Have a technician inspect your vehicle's crash sensor.