Where is the coolant temperature sensor located?

Tiny
JACKIE OLK
  • MEMBER
  • 2002 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
I am trying to find out where the coolant temperature sensor is located at.
Saturday, August 20th, 2022 AT 7:36 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
The coolant temperature sensor is located on the left front of the engine, behind the alternator. You will have to remove the alternator to access the sensor.

I have attached diagrams below for your reference.

Let me know of any questions.
Thank you.

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor
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Saturday, August 20th, 2022 AT 7:42 PM

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