2005 Pontiac Bonneville Q&A
2005 Pontiac Bonneville Question: why won't fans come on? Car is overheating.
I've replaced water pump, thermostat, flushed radiator. Car still overheats. My dashboard is not working properly, gas gauge not working, speedometer not working. The "battery saver activated" light comes on, car overheats, car makes high pitch noise. Alternator checked out fine. Fans don't come on. - psalaina
Check your belts. The serpentine belt covers most of what you are describing. It could be old/ worn causing it to slip. - 426cidHemi