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Loss of Coolant with no apparent reason

121 Views 3 Replies 3 Participants Last post by  greentraverse, 
gcarlash69
2009 Traverse LTZ based in Bahrain. Recently the car has started tending to run hot. Upon checking the coolant level was low, and was topped up. There are no apparent leaks anywhere on the car. Every day or two the coolant level has fallen to the bottom of the reservoir tank. Looking for suggestions as to what the cause could be.
I have checked the engine oil, no evidence of water there. When the coolant level is topped up the car temperature is normal during operation.
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R
Being a 2009.
Double check the timing chain cover.
Check for a trail of wet or dry of coolant that is drying up before hitting the ground.
Also check the coolant hoses for the heater core.
These are close to the brake booster/ firewall.
The connectors are hard plastic that can crack and leak.

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How to spot a water pump failure- with pics.

You can spot a slow leak by looking for signs of dexcool leaking and drying on the timing chain cover. Heres an example- note the trail of dry coolant (white residue). Another thing to look for is the signs of coolant being flung by the spinning water pump pulley. Another sign to look for...
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R
2
Check the connections on the connectors of this hose

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G
Don't forget to check the lines to the rear HVAC. They run under the car on the passenger side.
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