2001 Pontiac Grand Prix third owner, 144K miles. 3800 series II, not S/C.
Low coolant light came on, coolant level was okay, replaced sensor, unhooked battery to clear, coolant light went out, now it comes on when not touching the throttle, when accelerating it goes out. Now it stays on again continuously. Coolant level is okay, system has been bled.
Any thoughts?