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2 Stuck thermostats in a row????

11043 Views 9 Replies 7 Participants Last post by  Chadthatownsacruze
I hoping someone can provide some insight, I don't know if my 2012 Cruze really hates cold weather or if GM's thermostats are garbage? It's 1.4L, manual trans, 5500mi

With temps less than 20 degrees, my car won't come up to full operating temperature, even with 25 minutes of driving. Turning up the fan speed or the mile long coast down a hill into town causes the coolant temp to tumble.
I had it at the dealer today, they said the previous thermostat was stuck open. They replaced it with a new one and verified it was working correctly.

I drove the car home after work (1 degree F) and it's doing the same thing, I was only able to get the coolant temp to 160 degrees in 25 minutes. I could barely run the heater enough to keep the windshield defrosted. I cranked up the fan speed to 4 on the way home to test it and as soon as I did that the coolant temp dropped 10 degrees in a minute.

I wonder if this is really a stuck thermostat or can the Cruze not handle cold temperatures?
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Discussion Starter · #7 ·
I guess I have a resolution of sorts. :angry:

I brought the car back this morning, it was still not warming up on the drive in. They tested the thermostat, it was working fine, cooling system is working as designed. The tech took a brand new 2013 Cruze off the lot and got it to do the exact same thing mine is doing. He tested them both on the same stretch of road. The radiator hoses on both cars were ice cold, neither were circulating coolant through at 1 degree F. The guy who looked at my car at the dealership definetly knows what he's doing. He built the engine on my brother's camaro and I definetly trust his work.

So basically, not being able to use my heater in cold weather is normal. I'm really looking forward to dealing with this for the next 10 years I own this car. I don't know if I should look into covering the radiator or what to do? I have to drive with a hat and gloves on because I can't turn up the heat enough without causing the coolant temp to drop severly.
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