Genuine Pontiac Grand Prix Coolant Temperature Sensor

Pontiac Grand Prix Coolant Temperature Sensor Parts Questions & Answers

• Sensor,Engine Coolant Temperature
  15326386
  Q: What is the coolant temperature indicator system on Pontiac Grand Prix?

  A: The coolant temperature indicator system has a light or gauge in the instrument panel and a temperature sending unit on the engine. The location varies by engine size. Some vehicles have a low coolant warning system with a light and sensor on the Radiator. If overheating or low coolant is indicated, check coolant levels and wiring. Ensure fuses are intact. When ignition is on, indicators should light up for overheating or low coolant. If not, possible issues include a burned-out bulb, faulty ignition switch, or open circuit. To test, ground the sender wire with ignition on; if the gauge responds, replace the sending unit. Once the engine starts, the light should remain off unless there's an issue. If it stays on, possible causes are a grounded wire, defective sender, or faulty ignition switch. When replacing sending units, ensure the engine is cool and check coolant type. Replace sensors by draining some coolant and disconnecting connectors. Refill coolant after installation.