Question about 2004 Chevrolet Avalanche

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Where is the fuse for the temperature sensor on a 2004 Chevy avalanche?

My temp gage drops down to 160 and stays there. I have replaced the sensor, and troubleshooting reveals no power to the connector. I cannot find a blown fuse and am not sure which is the fuse for the sensor. This did not occur until I replaced the battery today. Prior to this, everything worked correctly.

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Hope you can read it? I don't believe it is a fuse problem. The sending unit sends signal to pcm. The pcm sends data to instrument cluster.
Where is the fuse for the temperature sensor on a  - coolant temperature-lvz04l4jcouq4viywajpg0bi-2-0.jpg

Posted on Jan 05, 2018


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Do you get hot heat inside the truck when it warms up?

Posted on Jan 05, 2018


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Posted on Jan 02, 2017


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SOURCE: 2005 avalanche temperature gauge does not move and

Electrical connection was loose following a routine maintenance check.

Posted on Apr 13, 2009


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SOURCE: heater blows cold air. also, the temperature gage

Even 160 degree water should blow fairly warm air from the heater. Feel the heater hoses to see if they are hot--if so, then a bypass valve in the heater air-duct system may be in the wrong position--look for loose or damaged vacuum hoses. Check the defroster ports for hot air. Check to see if the temperature gauge drop coincides with the radiator fan coming on. If not, the thermostat may not be working correctly. Also, 160 degrees seems a little cool for a modern engine (check the thermostat).

Posted on Nov 12, 2009


  • 396 Answers

SOURCE: Where is the location of the coolent tempurter

Should be close to the thermostat housing.

Posted on Jan 15, 2010

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1 Answer


The ambient temp sensor is usually located somewhere in front of the radiator or behind the front bumper. You'll see a small device, clipped to a nearby metal part of the body with wires attached.

Before replacing the sensor, try improving a possible poor connection by disconnecting and reconnecting the sensor a few times. I've experienced this on my '98 Astro, and the temp displayed correctly after cleaning up the connection.

Happy Motoring!

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Heater motor wll not run on 2003 chevy avanlance

A common problem is that the speed control resistor is burnt out. Usually this resistor is in the air plenum so it is cooled by airflow. Search Google for: "chevy 2003 avalanche heater resistor" and several photos of this will appear. NOTE: the little thing supported by two leads above what looks like a flat plate is a one-shot thermal fuse. If you are adept at electronics you can get a new fuse of the SAME TEMP RATING from or and replace just this thermal fuse IF the rest of the resistor is still good. At Digikey search for THERMAL FUSE and be sure and get same temp rating. These are commonly used in appliances such as hair driers as a safety cutoff. Once the element in them melts, they permanently open and shut down the appliance.

May 11, 2012 | Cars & Trucks

1 Answer

Temperature gage fluctuates when driving my 1996 mazda protege

Well sounds like first start your car record where the temp needle reads, then let the engine warm up (with out driving) then rev the engine to about 3500-4000rpm a couple times does your needle move at all record then hold your rpm at 3500 for about 5-10 sec does this get the gauge to drop? sounds like you may "if not over heating at all and coolant level and circulation is good" have a circuit problem, you can test this by going to auto zone and ask for a scan to be done on your car when the plug into your OBD 2 ask them to go into DATA STREAM and then check to see what temp your ECM thinks the engine coolant is at does it match your gauge at idle and at 3500rpm if not its a faulty circuit

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1 Answer

Heater issue, driver side of 2004 Chevy Avalanche

1. Place the ignition switch in the off position.
2. Remove the HVAC/ECAS fuse for 10 seconds or more. It's in the under hood fuse box. Put the temp in full cold.
3. Install the fuse.
5. Have any codes cleared with a scan tool.

Dec 07, 2009 | 2004 Chevrolet Avalanche

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this problem is caused in almost all cases by a failed actuator that moves the door insiode the heating/ac duct to change the outlet temperature, it is called the Air Temperature Control Blend Door actuator.

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5 Answers

Temperature gage not working,gas,gears gage are ok.

located the temp sending unit check that its pluged in, if it is unplug it and ground the wire to something metal (with the switch on) and see if the gauge moves if it does then your temp sending unit is bad and needs replaced

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The oil pressure gauge on my 2004 chevy avalanche is bouncing all over the spectrum, from ''0''-''80'' PSI without any affect on the performance of the engine. The needle will usually peg at 80 PSI, or...

it is probably the gage cluster. chevy has had a problem with this and it was recalled. so you might go to your dealer and ask him if they will replace the cluster. mine did that to but as time went on all the other gages went crazy or stopped working .i had to replace the cluster.

Jun 09, 2009 | 2004 Chevrolet Avalanche

1 Answer

2003 Avalanch fuel gage

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Jan 16, 2009 | 2004 Chevrolet Avalanche

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