Lucerne V6-3.8L (2007)
TAC Inhibit
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The ECM detects a fault within the throttle actuator control (TAC) system.
TCS
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The ECM detects that the traction control system had been activated. It is also possible that a tire with low air pressure can also set this
disengagement reason.
Trans. DTC
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The ECM detects a transmission gear fault.
Under Set Speed
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The ECM detects that the vehicle speed is less than the cruise memory speed by more than a calibrated amount.
VSES
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The ECM detects that the vehicle stability enhancement system had been activated.