One problem related to assist has been reported for the 2018 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Sierra 1500 based on all problems reported for the 2018 Sierra 1500.
Driver assist-lane keeping assist-forward collision warning-automatic emergency breaking life threatening when system fails and is intermittent . Vehicle has been said to be dangerous to drive by gm tech/can cause life threatening conditions. Fault has been confirmed by dealership. Warning lamp> "service driver assist system" Friday 3 December 2021 at approximately 21340 miles.