Chevy HHR 06 Radiator loosing coolant


Asked by Mar 14, 2012 at 09:29 PM about the 2006 Chevrolet HHR LT

Question type: Maintenance & Repair

OK got a HHR LT 2006, changed the thermostat and filled with Dexron coolant, plus reserve tank...truck is still loosing coolant and do not see leak any where and yes i did a flush on it also....i am stumped because it does not over heat and never has even before I replaced old thermostat

2 Answers

Roma Bezma

Possibly water pump has failed or your thermostat is not opening

1 out of 1 people think this is helpful.
Don Paolino

check oil to make sure no antifreeze in oil due to head gasket leak. could be leaking only when coolant is pressurized and this comes off as a kind of vapor you cant see; high pressure leak could be in water pump or radiator cap. make sure coolant recovery tank is not cracked or leaking. make sure hoses are clamped with proper tightness. With engine off, take off radiator cap and pressurize the system with a radiator system tester which is a kind of pressure pump; check for pinhole leaks in hoses; if pressure drops there is a leak somewhere; check heater core to make sure it is not leaking. pressure test radiator cap with the tester.

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