One problem related to adaptive cruise control has been reported for the 2026 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2026 GMC Sierra 1500 based on all problems reported for the 2026 Sierra 1500.
GMC super cruise malfunction no warning before supercruise shuts off passing a car on four lane highway (super cruise enabled) super cruise shut off and truck continued heading for the center gaurd rail. (I caught it before it became an incident). Super cruise abruptly shuts off (no warning) and within a couple thousand feet it turns on. My first time using supercruise az highway 87 n bound just before rye and az highway 260 between payson and christopher creek I called my dealership but it was like uh huh ok I'll let gm know. - no support! the only indicator is on the steering wheel a red,green or yellow light. Red is off-green is active, and yellow light no service. Red light comes on and seat vibrates supercruise drops out.