r/ChevyCobalt

Hey y’all I’m like 80% sure I can do this but I want to buy some nice SS wheels whenever they pop up and I am a little nervous about picking up the right thing. I’m pretty sure they’re also the 5x110 but does the size of the rim matter? Mine is a 2008 LT 2.2L, so the stock sizes are 15” and 16”. Pretty sure the SS’ are 17”? Would that work out or nah?
Also if I found some pontiac G5 ones would they work (depending on size of wheel)?

To note, single owner...my parents bought it new, gifted it to me. Timing chain was replaced around 100-120k miles can't remember for sure...other than that no other major repairs. Dad was always on top of oil changes and stuff with it.

What I've done so far:

-Replaced entire front suspension

-oil cap (was leaking)

-valve cover/plug gaskets

-Brake cylinder, evap cannister... finally got all my service lights off.

Now the focus is longevity... what is typically the make or break on these bad boys when it comes to them surviving to 300k miles? What else should I pay attention to to prevent potential failures and should just go ahead and replace now?

Car has sentimental value and my goal is to make it to 300k and start using it as my daily commuter.

Hi everyone,

I'm hoping to get some advice before I spend more money replacing parts.

I have a 2009 Chevy Cobalt LT 2.2L (automatic) with 94,000 km and the original engine.

A few weeks before it completely failed, I noticed an occasional light jerking while braking. It wasn't severe and the car otherwise drove normally.

The day it broke down, I was driving 80–90 km/h on Highway 138 with no issues. After slowing for a red light, the slight jerking happened again while braking.

When the light turned green, I accelerated and the car barely responded to the gas pedal. The engine itself wouldn't rev even with the accelerator pressed. Shortly after, the check engine light came on.

I pulled onto a side street where the car started lightly rocking/jerking back and forth. A few seconds later, the brake warning light came on, followed by the Service Traction light.

The car gradually lost power, slowed down on its own, stalled, and wouldn't restart.

After sitting for about 5–10 minutes, it started once but died after a few seconds. On the next attempt it stayed running.

While turning around in a driveway, it stalled again when I braked and shifted into reverse. I restarted it, kept it alive with a little throttle, and managed to drive it home.

On the drive home it wouldn't accelerate properly. It would barely go over 20 km/h at first, eventually reached about 50 km/h, but would not go any faster. Every time I slowed down or came to a complete stop, it would jerk again and try to stall.

Now the car only cranks. It sounds like it wants to start and occasionally tries to fire, but never fully starts. I also think I can smell fuel after cranking.

The only code stored is **P0641 (5V Reference Circuit)**.

So far I've replaced:

- MAP sensor

- Crankshaft position sensor

Neither fixed the problem.

I haven't checked for spark, fuel pressure, or the 5V reference voltage yet. I only have a basic code reader.

Has anyone dealt with this exact issue on a Cobalt or another GM vehicle? Based on the symptoms, does this sound more like a wiring harness issue, a sensor shorting the 5V reference, a bad PCM, or something else?

If this were in your shop, what would be the very first things you'd test before replacing any more parts?

Any advice is greatly appreciated. Thanks!

I have a 2006 LS Coupe and just hit 247k. No major repairs yet. I change oil every 2000-2500k because it burns/leaks some oil. Anyway, toying with the idea of replacing the timing chain, even though there are no sounds/problems….yet. Good idea? I need to check around my area and see who will actually do it. Just trying to be prepared I guess so she lasts as long as possible….i love her!!

hey, my first car will be a Chevrolet Cobalt LT, but, I’m thinking between the 2008, 2009, and 2010 models, what is the best model?

For $2799.. 97k miles. Just need it to commute to work and back and to run errands around my city. Wouldn’t be using it for any long distance traveling.. need some advice from you guys. Thank you

The lever doesn't return after I turn the wheel back to straight, previous owner replaced the whole thing and it didn't fix the problem, what might be causing this?