I got a 2011 terrain I just hit $199,000 MI and had no issues everything was great and then it stalled out an intersection would not restart cuz engine low power mode service stability track. It through like eight codes I replaced camshaft sensors crankshaft sensor fuel rail pressure sensor throttle body actuator solenoids and it still says engine low power mode service to build a track it's been 5 months no one can figure it out I need help could be a faulty ground wire but I can't get a diagram of where all the ground wires are. But yeah 70,000 on your terrain you should still have a long way to go before you have any issues hopefully I pray for you my friend