Question about 2005 GMC Envoy

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Check engine light....coolant temperature sensor on a 2005 gmc envoy where is it located...how to change it

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Take altanator off and it is located right behind

Posted on May 25, 2010

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1 Answer

Locate temperature sensor on 2007 gmc Envoy SLT


on top of motor in front by where radiator hose is.

Oct 07, 2014 | 2007 GMC Envoy SLT

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Trouble codes p0118 temperature po118


code p0118 refers to engine coolant temperature (ETC) sensor ---circuit malfunction===causes---coolant thermostat---wiring open circuit/short to positive---wiring short to ground---ground wire defective---ECT sensor.. The temp gauge works off a temperature sender unit separate to the coolant sensor and if it is reading 100 then it indicates an overheat situation in the engine . Probably why the engine light is coming on. As the thermostat is in the list of causes I would replace it as a precaution. The coolant sensor is what tells the CPU to turn on the electric fans to cool the radiator

Jan 13, 2014 | 2004 GMC Envoy

1 Answer

What is the location of the coolant sensor on a 2004 gmc envoy


Hi there:
The Coolant Temperature Sensor location on 2000-2005 4.8L, 5.3L, 6.0L engines is in the head driver side, above the plug.



Additionally, this video also could help you...



Hope helps.

Mar 01, 2013 | 2003 GMC Envoy

1 Answer

Where is the location of the coolant temperature sensor on my 2004 gmc envoy,and what is the best way to get at it?


if you have a code for erratic thermostatic or coolant temp ,change the thermostat it is a known problem ...located under the alternater very hard to change make sure you get an acdelco or dealer part ;) assuming it is the in line engine

Nov 20, 2010 | 2002 GMC Envoy XL

1 Answer

I have a 2003 GMC Envoy and the check engine light comes on peridically. Auto Zone checked it and Code 0128 was the alleged issue. However, where is the sensor? No one seems to know the location of the...


This code relates to low coolant temperature not the 02 sensors. You should change your thermostat, it's stuck open and is not allowing the engine to properly heat up.

By the way, there are 2 92 sensors on Envoys and Trailblazers. One of them upstream is in the engine compartment right off the exhaust manifold, easy to replace. The other one downstream is next to the transmission drain plug in the exhaust pipe.

Oct 26, 2010 | 2002 GMC Envoy XL

1 Answer

Trouble locating cooling sensor on 2003 gmc envoy


4.2L Engine To Remove:
  1. Disconnect the negative battery cable from the battery.
  2. Drain the coolant from the engine.
  3. Disconnect the engine coolant temperature (ECT) sensor connector. Engine coolant temperature sensor removal and installation gm-04-42-1509.gif

  4. Remove the engine coolant temperature (ECT) sensor from the engine.
To Install:
  1. Apply thread sealer P/N 12346004 or equivalent to the engine coolant temperature (ECT) sensor threads.
  2. Install the engine coolant temperature (ECT) sensor into the engine. Torque the sensor to 12 ft-lb (16 Nm).
  3. Connect the engine coolant temperature (ECT) sensor connector.
  4. Refill the engine with coolant.
  5. Connect the negative battery cable to the battery.
5.3L & 6.0L Engines To Remove:
  1. Drain the coolant from the engine.
  2. Disconnect the engine coolant temperature (ECT) sensor connector. Engine coolant temperature sensor removal and installation removeect.gif

  3. Remove the engine coolant temperature (ECT) sensor from the left cylinder head.
To Install:
  1. Apply thread sealer P/N 12346004 or equivalent to the engine coolant temperature (ECT) sensor threads.
  2. Install the engine coolant temperature (ECT) sensor into the left cylinder head. Torque the sensor to 15 ft-lb (20 Nm).
  3. Connect the engine coolant temperature (ECT) sensor connector.
  4. Refill the engine with coolant.

Jul 08, 2010 | 2003 GMC Envoy

1 Answer

Where is the temperature control sensor located on a 2003 gmc envoy


The engine coolant temperature sensor(ect)is located
on the front of the engine, just above the alternator.
Hope this helps.

Mar 14, 2010 | 2002 GMC Envoy XL

5 Answers

Check engine light on - 2003 gmc envoy XL


That code represents a lower than expected reading for temperature (coolant). First thing to do is check your coolant level, as if it is low, then the sensor can not read correctly. Second, you may have a thermostat that is stuck open, allowing the coolant to cool off too much. The sensor should be mounted on top of the engine, near the thermostat housing.

May 18, 2008 | GMC 2003 Envoy XL

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