How to Replace Coolant Temp Sensor | 2005 Sierra 1500 GMT800 - SIMPLE!!
How to Replace Coolant Temp Sensor on a 2005 GMC Sierra 1500 (GMT800)
In this video, I demonstrate how to replace the coolant temperature sensor on a 2005 GMC Sierra 1500. This quick guide is perfect for fixing temperature-related engine issues.
What You’ll Learn:
Tools required: 3/4-inch deep well socket.
Steps to safely remove and replace the coolant temp sensor.
Tips to avoid damaging the electrical connector and threads.
Key Steps:
Drain coolant and ensure the engine is cool.
Remove the electrical plug carefully by disengaging the darker gray tab.
Use a 3/4-inch deep well socket to remove the old sensor.
Install the new sensor by threading it in by hand first, then securing with the socket.
Tips for Success:
Always thread by hand to avoid cross-threading.
Use GM parts with thread locker to ensure a secure seal.
Refill the coolant and properly bleed the system after installation.
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