Engine Overheating Problem

[newbie]

I would also check the coolant level in the reservoir after the truck is hot. To clarify my earlier post, I had to add coolant to a half inch above the full mark after the truck was hot. I haven't gotten the low coolant warning since.

John

 

[camr]

Jayc, When you mention that the temp dropped substantially below normal on the downgrade, it sounds like a possible start of a thermostat issue. A thermostat stuck open would allow this to happen. However, if it were to stick in the closed position, it would be a major overheating problem with coolant all over the place. The next time the vehicle is in for service, it probably wouldn't hurt to have the thermostat changed.

 

[jayc]

Well the final part of the story is that I took the truck to the Chevy dealer here in Colorado Springs. Their service tech found a very small leak-under pressure-in one of the coolant lines to the turbo. . He said it was very hard to find, but it is fixed. Thank goodness, because we start back to Texas.

 

[jimtoo]

That's great that he found a leak. I knew it had to be a leak someplace,, that stuff does not evaporate. Had to be going someplace... just glad you found.

 

[jayc]

I really thought there was a problem with the gauge or the sensor. The engine temp was fine but the low coolant light kept coming on. We're leaving today, so I guess I'll know soon enough. Here's hoping...