Coolant Level Control
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The engine cooling system contains an engine coolant level indicator module to alert the driver in the event of a coolant loss. The engine coolant level indicator module sends out a coolant loss signal over the low coolant warning indicator control circuit via the underhood accessory wiring junction block. When the engine coolant level indicator module reads a low coolant level in the cooling system, the switch closes. The instrument cluster has a coolant level warning indicator that receives power from the fuse block ignition 1 voltage. Ground is provided by the ground circuits via the underhood accessory wiring junction block to G113.