Question about 2003 GMC Envoy

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What is best running temp for 2003 envoy - 2003 GMC Envoy

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The engine operating temperature should be between 200 to 210 degrees, if it is running below that, the engine will not perform at its peak and the check engine light might be set.

Posted on Dec 16, 2012

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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

My envoy idles up and down when i turn my defroster is on


When you place your controls on defrost it turns your air conditioner on - depending what the heat level is set on the air conditioner will cycle on and off to regulate temp. Anytime the A/C runs the idle sensor will bring the idle up

Mar 25, 2013 | 2003 GMC Envoy

1 Answer

Changed spark plugs on 2003 gmc envoy 4.2lno runs bad


First of all, did you use AC Delco Iridium plugs part number 41-103? These are the best plugs for this engine.
Second, did you firmly seat the coil pack when reinstalling them on each plug?
If it is running bad, are you getting the Check Engine light coming on? If so, what is the code?
When you changed the plugs, did you disconnect the battery? If you did, the rough running could mean that the throttle body should be cleaned.

Nov 11, 2012 | 2003 GMC Envoy

1 Answer

2003 envoy only runs 10mph when cold when warm runs fine


CHECK TRANSMISSION FLUID LEVEL. SOUND LIKE TRANSMISSION SLIPPING. BEST THING TO DO IF NOT.TO CHANGE TRANSMISSION FLUID AND FILTER.IF TRANSMISSION FILTER STOPPED UP TRANSMISSION CAN PUMP ENOUGH THROUGH DIRTY FILTER TO OPERATE WHEN FLUID GETS HOT BECOMES THINNER THEN IT WILL FLOW THROUGH FILTER BEFORE TRANSMISSION WILL SHIFT RIGHT.

Sep 20, 2011 | 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

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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

2 Answers

The heat in my 2003 envoy hardly comes out.


The thermostat is probably the culprit.....take it to your local garage and let them test the opening temp....

Mar 09, 2009 | 2003 GMC Envoy

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