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Where is the thermostat located on a 2003 gmc envoy?

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If you have the 6cyl engine. on the left side of engine, below alternator, its built into the houshing that the hose is attached to. Dont keep what engine your car has a secret. it help us help you.

Posted on Sep 02, 2010

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Related Questions:

1 Answer

HOW DO I LOCATE CYLINDER 6 ON A 2003 GMC ENVOY THAT HAS A 4.2 V-6


the last cylinder is the number 6 front to rear

Sep 11, 2014 | 2003 GMC Envoy

1 Answer

Where is the engine coolant temp sensor on gmc envoy 2004 xuv


More than likely the thermostat is stuck open. You should replace the thermostat and the temp sensor. See picture below for location.

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Apr 04, 2013 | 2003 GMC Envoy

1 Answer

Just replaced thermostat and temp gauge is reading 200. is that normal or ok. 2003 envoy


that's very normal, beacuse 2003 envoy and trail blazer use a 192 degrees thermostat.

Jul 05, 2011 | 2003 GMC Envoy

1 Answer

Where is the coolant thermostat located in a 2003 gmc envoy?


The thermostat is behind the alternator and under the pcm on the drivers side of the engine.

Aug 04, 2010 | 2003 GMC Envoy

1 Answer

I am having problen with my 2003 GMC Envoy. The scanner show the following "code 128", what this mean.


This code indicates that the coolant has not reached operating temperature, this is usually caused by a stuck open thermostat.

Jun 29, 2010 | 2003 GMC Envoy

1 Answer

Where is coolant temp sensor located on 2003 gmc envoy v6? How do you replace it?


heres a diagram to show you where the coolant temp sensor is located, its behind the alternator on the left side (driverside),the sensor just unplug the connector and then unscrew it and out it comes.

Jun 21, 2010 | 2003 GMC Envoy

1 Answer

I need to change my thermostat on my 2003 gmc envoy and do not know where it is located


its behind the alternator ,thermostat and housing is 1 unit,cant be purchased separately.

May 15, 2010 | 2003 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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