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How do you fix a ambient temperature gauge reading 50 degrees. I experience this down to negative readings although hot outside the air blows warm until reading reaches 50 or above again?
Timguthrie
The ambient temperature guage is faulty and needs to be replaced. I purchased a replacement part from a GM dealer for $19.00. Checked several after market places and the part ran from $22.00 to $26.00. I have a 02 Trailblazer LT. The guage that I purchased had a bracket attached to the sensor. The sensor is located in the upper right front(as you face the engine)near the radiator. On my truck there is a round brace that runs from the right fender to the brace in front of the radiator. Just to the left of the brace there is a bracket that hold the grill in place. Between the brace and the bracket there is a space. Just below the bracket there is a plastic gray/green device. That is the temperature sensor. Make sure radiator is cool when replacing this item. You could get burned. I took a flat blade screw driver and popped the sensor out the the hole which holds it. Then you can pull the sensor toward you by pulling up on the wire which run to the instrument panel. The green header has a clip which can be disconnected from the gray plastic holder. (In my case, the bracket that was purchased with the part does not need to be used. However, the picture at the GM parts department indicated that is was required.) After replacing the new sensor, rerun the sensor/wire back into place and from the back side of the bracket push the device back into the hole. It snaps into place. Your done. I asked for a quote from the dealer to replace the sensor and they quoted $250.00. Not sure they knew what they were talking about.... if they did, I'm in the wrong type of work. Hope that helps.
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∙ 17y ago
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