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Discussion Starter · #1 · (Edited)
Hello Everyone, appreciate the help in advance.

Here are the details, car is running ok but the engine is overheating.
  • Car has 95k miles
  • All maintenance done at dealership since day one
  • Temp gauge goes up to 235-240 degrees (Usually 210 is the normal temp)
  • Both fans start at full blast to lower temp
  • Temp rises on idle or when the AC/Heater is on
  • AC and heater working fine
  • Coolant reservoir was very low
  • Added coolant but temp still goes up
  • Next day the reservoir was very low again
  • No visible leaks on garage floor or engine
  • Added coolant again and after 5 hours parked, the reservoir level got low again (while parked)
  • When I first drive the car I hear water moving, the sound is coming from the bottom/front
  • Checked the oil cap and there is no sign of coolant contamination. Oil is clean.
  • No recent work done in the car with the exception of the last regular oil change
  • No dashboard warning lights

What do you all think this can be? I'm going to the dealership Friday if I can't figure the problem.

Thank you.

Val
 

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Most likely weep hole leak from water pump. Leaks slowly, and dries on face of timing chain cover before it hits the ground.
Youll have to remove the plastic shield to access the radiator cap. When cold.... then fill up to the top. And also fill the reservoir to the full cold mark.
 
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See images here

 

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This is on my traverse. But your enclave is very similar.

Home depot has these.
bottle cap opener/paint lid opener.
The curved tip is great for removing the recessed push pins



 
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Discussion Starter · #5 ·
@rbarrios thank you so much for all this info. I did everything you said and the car is running fine now.
The coolant in the radiator was low and the color is a bit rust and not as clear as it should be. Time for a flush?

With daylight I was able to see the leak. See images below.
I also noticed a hose on the back of the engine (between the engine and dashboard) is covered with a layer of dry fluid. See image.
I cleaned it with a paper towel and it has a bit of a sweet smell.

Hose with layer of dry fluid. Do you know if this indicates anything specific?

Tire Wheel Automotive tire Hood Tread



Leak residue. It's drying before hitting the ground.

Wheel Tire Vehicle Automotive tire Automotive lighting
Tire Wheel Automotive tire Motor vehicle Tread
 

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So you difinitely have a leak.
Time to hit rock auto and order new water pump.
Also consider a new serpentine belt. It comes off when pump is repaired.
Also consider a new upper/lower radiator hose, and new thermostat.
Youll be draining the cooling system... may as well.

That hose. Just wipe it up and monitor. It may be 95,000 mile seepage.
 
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How to thermostat

 
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The arrow in the photo is one of the power steering hoses at the back of the engine. I had mine replaced (under warranty). It may or may not be related to the leaks you see under the car.
 
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