where is the coolant temp sensor

Hello,

the coolant temperature sensor is located in the engine block by the radiator hose outlet. Here is a guide and a couple of diagrams that shows on both engine for that car. (BELOW)

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

2004 GMC Envoy 6 cyl Two Wheel Drive Automatic 116000 miles

where is the engine coolant sensor located?

Hello –

Should be located on the left front of the engine block, near the alternator – look for a black and yellow wire to the plug.