This bulletin applies to 2017 GMC Terrain vehicles built from Dec. 2016 to June 5, 2017. The ABS and Stabilitrak lights may be on. DTCs C0035 and C0040 may be stored. This condition is caused by water intrusion into the left and/or right side wheel speed sensor. Only replace the wheel speed sensor that has set these conditions.
Right wheel speed sensor..........20811371
Left wheel speed sensor.............20811372