r/ChevySonic

Context, I got this 2015 Chevy Sonic LS at 90k miles for 900 dollars from a family member. I wouldn't be considering it if I didn't get the car for ridiculously cheap. I'm already 1.2k deep in repairs from replacing the water pump and thermostat housing.

About a month ago my car started over heating, while the oil light kept turning on. I took it to the shop, my water pump and thermostat housing were cracked. I get it out the shop and my oil light is still turning on but only when I'm not revving the engine. I tell the mechanic they take it back in and now they are saying the oil pump is failing. I've seen this car starts to have a lot of issue around the mile mark that I'm at right now (104,000). So I'm curious if it is a mistake to sink anymore money into this car, and it will just continue to have cascading failures.

Can I get suggestions on universal roof cross bars that people have used on these cars? I don't want to necessarily bolt anything to the roof quite yet, looking for clamp on style that has actually worked.

My Sonic key fob has slowly been losing the range at which it works. I have tried changing batteries to no avail. Is there any known ways to fix this without buying new?

Hello,

I was wondering if anyone here has ever experienced this problem. I have a 2015 Sonic LT 1.8L with only 52,000 km. Recently, I had to have the thermostat replaced because it was cracked in two places. A mechanic replaced it with an aluminum one.

That’s when the problem started. A few days later, the car would no longer start. When I turn the key, there is power, the lights come on and the radio works but when I turn the key to start the engine, everything shuts off. The battery is brand new.

The problem is intermittent. The car may refuse to start at all, or, completely randomly, it may start after turning the key 50 times. The mechanic ran another diagnostic but couldn't find the problem. He recommended that I take it to the dealership because he suspected that the ECM was the issue.

I took it to the dealership, and they ran a diagnostic as well. They told me that the ECM indeed needed to be replaced. After replacing it, the mechanic told me that he was able to start the car 10 times in a row, but then it suddenly stopped starting again.

He ran another diagnostic and now says that the BCM needs to be replaced. At this point, I’m already at 2,000$ in repairs at the dealership, plus another 800$ for the BCM they want to replace. The part is currently on back order, and the car still doesn’t work.

Has anyone ever experienced or seen this problem before?

Any advice would be greatly appreciated.