GMC Terrain: Airbag

Affects GMC Terrain · 2018 — about 13K vehicles.

The hazard

On certain vehicles, the Sensing Diagnostic Module (SDM), which controls the airbag system, may not shut down correctly when the vehicle is turned off. If this happens, the SDM may not work when the vehicle is started, making it unable to detect a crash or deploy the airbags, and increasing the risk of injury in a crash. Correction: Dealers will reprogram the SDM with updated software to correct this problem. Note: If the SDM is inoperative when the vehicle is started, the airbag warning lamp would illuminate, a “service restraint system” message would be displayed and warning chimes would sound.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational