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12-20-2021, 08:51 PM | #1 | |
AF Newbie
Join Date: Feb 2006
Location: Westminster, Colorado
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2012 Verano 2.4 ecotec no heat
Need some serious help. Tried all the normal things.
Symptoms: slight overheating (190-210F), cracking/popping expansion tank, overpressure leaking, fan turns ON, lower radiator hose cool to touch, upper hose hot, both hoses pressurized engine running, no heat from vents. Attempts: replaced thermostat and water pump, numerous Hot/Cold cycles, burp funnel, Coolant Vac Bleeder/fill kit, tested new thermostat and tank cap. Afraid to drive, don’t want to pop hose and overheat. Plz, anyone with experience, what am I missing? |
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12-20-2021, 09:55 PM | #2 | |
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Re: 2012 Verano 2.4 ecotec no heat
If you know someone with a thermo gun, shoot your radiator. Sounds clogged.
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12-21-2021, 07:32 AM | #3 | |
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Re: 2012 Verano 2.4 ecotec no heat
If the hoses get pressurized very quickly from a cold start, could be a bad head gasket.
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01-24-2022, 11:06 AM | #4 | |
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Re: 2012 Verano 2.4 ecotec no heat
Update: Repaired. Balance shaft (secondary) timing chain broke.
Taken to repair shop. While waiting, I found a post on a Malibu owners website describing exact same issues. That owner found the same problem. I didn’t mention it to shop but, they found it a day later. Add another to 2.4 ecotec timing chain issues. |
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