2 issues

[Barnold]

So I have had my Sonic 1.4 T with the MT since Easter last year, so about 1 year 4 months. I have 37,000 trouble free miles on it, but now I am seeing 2 issues and am going to get it in to the dealer on Friday. I am seeing what I believe is a misfire on start up, the traction control light even comes on once in a while. The shaking last no longer than when the revs go down. The 2nd problem is that I am noticing my coolant lv going down. I was almost out 2 weeks ago and I filled it and now it is almost out again. Has anyone seen either of these problem and had them fixed?

 

[$ub$onic]

I don't know about your first problem but on some sonics the coolant problem has shown its ugly head. Some are from a missing clamp, others from a faulty seal.

 

[Yosemite Sam]

I had the first issue back in May at 34k. It turned out to be a cracked pcv valve. No coolant loss yet and I'm near 41k now.

 

[Chevrolet Customer Care]

Hello Barnold!

Please keep me posted about what happens at the dealer and let me know if you need my assistance. I can also document your issues in our system if you would like me to. Just send me a PM. Have a great week.

Jackie
Chevrolet Customer Care

 

[Barnold]

So the dealer called me and said I had a bad head gasket that was causing both problems, then they called me and said the head gasket looks good and they believe that it is a problem with the head. A new head is being installed as we speak, good thing I have the 100k power-train warranty.

 

[Chevrolet Customer Care]

Barnold,

I am glad everything is being repaired. Thank you for the update. If you have any other questions or concerns, please let us know.

Erica Tiffany
Chevrolet Customer Service