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Coolant sensor location

Tiny
PADGETT51408
  • MEMBER
  • 2009 PONTIAC G6
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
I cant find the location of the coolant sensor to replace it.
Monday, October 26th, 2015 AT 12:46 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
It's in the end of the cylinder head at the transmission side.

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Monday, October 26th, 2015 AT 4:32 PM
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
  • 2007 PONTIAC G6
Can you tell me where the coolant temperature sensor unit located?
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Monday, February 11th, 2019 AT 6:50 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello,

Here is a guide to help walk you through the steps for changing the coolant sensor.

With the 2.4L engine, the coolant temp sensor is located right rear of engine.

With the 3.5L engine, the coolant temp sensor is located, rear cylinder head, below coolant reservoir.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

USER NOTES: I found on front head driver side on 2009 Pontiac g6 v6 3.5
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Monday, February 11th, 2019 AT 6:50 PM (Merged)
Tiny
KINA24U
  • MEMBER
  • 1 POST
  • 2008 PONTIAC G6
  • 118,000 MILES
My fan runs constantly and my temp gauge quit working. We changed the coolant temp sensor and didn't think that worked until I drove it to and from work and all seemed fixed. Then both quit working again. Then they worked and now they don't. I'm thinking there's a loose wire or bad connection?
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Monday, February 11th, 2019 AT 6:50 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check the ground wire at back of engineabove transmission
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Monday, February 11th, 2019 AT 6:50 PM (Merged)

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