My dealer took care of the problem for free. It was the thermostat. My Sonic was past the 36,000 warranty but I guess they included it in the power train warranty

 

Hello,

My name is Ashley, I have also had 6 codes pop up related to the thermostat control circuit being open or closed.
I’m a college student and I didn’t have the money on hand to just pay for it to be replaced and I didn’t know how much it would cost me, because they wouldn’t tell me either. The problem started in about DEC 2014, (2012 Chevy Sonic) I just got it fixed at the end of February 2015, and it was covered under a warranty I don’t have gap or any of the other warranties and my car has 58,000 miles on it over the bump to bump as well… I took it back to the dealer (of course they tried to charge me the $90 diagnostic fee) they had it fixed in one day and I have no problems as of now and I didn’t pay one penny. I believe the part was $130 - $150.

 

I own a 2012 Cruze that has 31,000 miles and is 3 1/2 yrs. old. Of course ck engine light is on(it has come on & off for 6 months) I have an error code of P05297 and the dealer wants $115.00 just to check code. John S.

 

Hello John,

We apologize for any inconvenience you've experienced relating to the check engine light in your 2012 Cruze. We'd like to gather your information via private message and reach out to the dealership to explore possible options in getting this issue diagnosed. If interested, please send your VIN, mileage, contact information, and the name of the dealership you prefer to work with.

Thanks John, we hope to receive a message from you soon!

Jasmine F
Chevrolet Customer Care

 

Good luck John, after I received that code, I called the dealership to find out what it would cost me, and they refused to tell me. I then contacted Chevy Customer service, who after 2 days of back and forth phone calls sided with the dealership and said "we can't give you an estimate to replace the part without first diagnosing it for $115, but when you get the repair done the $115 goes toward it."

 

Are you folks talking about the thermostat that regulates the flow of coolant through the engine and radiator ?

If so , lets get real , that is not cutting edge technology . Those type of thermostats have been around for ages .

Or is this some new gadget that GM dreamed up ?

God bless
Wyr

 

From what little I have been able to dig up , it seems GM did dream up a new , more expensive , gadget . :-(

Murray Temperature Control Plus 72521 - Thermostat | O'Reilly Auto Parts

This is a combination of thermostat housing , thermostat and some sort of electrical gismo . And , of course , when it goes bad , no telling if it is the mechanical thermostat , or the electrical gismo ( wonder if this is a coolant sensor ? ) . But it certainly costs more $$$ to replace , than a thermostat .

God bless
Wyr

 

I am also having this issue with my 2012 Chevy Cruze with 28,477 miles. Less than 45 days out of bumper to bumper warranty. Dealership says the thermostat and gasket are NOT covered under powers train warranty. $382 for replacement including the $47.50 for diagnostic testing.

 

I also just had the same code on my 2012 Crude. However, the light was on on my dashboard and then was gone the next day. Why did the light come on and then go off again? Does it still need to be checked? My car has roughly 31000 miles and I'm concerned it may not be under warranty.

 

The thermostat and housing is covered under the Power Train warranty. I would call Chevrolet directly. They will work with the dealership on your behalf (800)222-1020. The dealership I went to fixed it and diagnosed it for free even though my car no longer had the bumper to bumper coverage.