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Old 01-08-2013, 02:38 PM   #18
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Thanks for the welcome but I've got bad news Chris, I have coolant leaking into cylinder #3 . I just got the word from our local dealership.

It's warranty work, but they'll be keeping it until at least Wednesday while they get parts to fix it. There's no recall on this issue of yet, but apparently this is a common enough occurrence that they had a bulletin in their system about it.

Something is wrong with gasket that allows carbon build up to let coolant into the cylinders...

I immediately questioned whether this was something I'm going to see a recurring problem with and was told that once they make this repair it shouldn't be a problem in the future.

Sounds an awful lot like a gasket needs to be recalled to me.

The worst part, I'm driving this 2,000 miles on Thursday. I have to pray this is fixed and fixed right.

Please let us know if your dealership was able to address all of your concerns promptly.

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Old 01-09-2013, 02:46 PM   #19
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I have been having this problem lately when it's cold out. I start my 2010 1ss in the morning and it misfires the car shakes, and the CEL blinks for about 20 seconds and the service stabilitrac lights come on... after about 30 seconds the idle comes down and it runs fine and all the lights go off... I don't like this at all im going to the dealer as soon as i can.
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Old 01-09-2013, 02:49 PM   #20
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I have been having this problem lately when it's cold out. I start my 2010 1ss in the morning and it misfires the car shakes, and the CEL blinks for about 20 seconds and the service stabilitrac lights come on... after about 30 seconds the idle comes down and it runs fine and all the lights go off... I don't like this at all im going to the dealer as soon as i can.
Welcome to the forum! Please keep us up to date on what your dealer says.
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Old 01-10-2013, 12:04 PM   #21
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I have been having this problem lately when it's cold out. I start my 2010 1ss in the morning and it misfires the car shakes, and the CEL blinks for about 20 seconds and the service stabilitrac lights come on... after about 30 seconds the idle comes down and it runs fine and all the lights go off... I don't like this at all im going to the dealer as soon as i can.

We apologize for any inconvenience or frustration you are currently experiencing. I would suggest going to the dealership as well for a proper diagnosis. Please let us know the outcome.

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Old 01-11-2013, 11:23 AM   #22
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Well guys I have more horrible news.

They put the engine back together, test drove it, and more warnings came up that I now have a slack timing belt. How on Earth have I put 26,000 miles on this car and it's only when the engine is completely disassembled and reassembled that this issue comes about, you might ask? I asked the same thing and was assured I'm pretty much an idiot and to not worry about it again.

I'm so sick of the customer service at our dealership.

I finally got to the point I got the general manager on the phone and what he told me takes the cake.

I said, "This is ridiculous, you've had this for a week, you've known I was planning to move today, now you tell me there's something else wrong and my plans are completely thrown off. What's going to break when you fix this?"

He replied, "Well this should take care of it, but this is why cars have warranties. GM doesn't guarantee every car comes off the assembly line perfect."

Talk about brand confidence right there.

But wait, it gets better.

Yesterday we had a high of 45, clear blue skies to start our 2,000 mile drive. Today, high of 17, 3-6 inches of snow expected with 25mph+ winds. We all know how well Camaros do in snow. Not to mention our entire apartment was loaded onto a truck yesterday and we had to find somewhere to stay in Casper for the night. More if it turns out we're snowed in now.
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Last edited by Kylegrantham; 01-11-2013 at 11:37 AM. Reason: Typos
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Old 01-11-2013, 03:03 PM   #23
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I would ask for a brand new engine, no more no less. Don't pick up the car and call GM!
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Old 01-13-2013, 12:19 AM   #24
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Hi guys, I just took my car in the other day, I had several isues., tire, air conditioner, and the stability. The dealership said they found an update for PCM..and this is what caused the stability trac issue and engine to run rough..it seems to run better but we had 60 degree weather here also ..so I will see what happens when the temp drops..Good luck guys..
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Old 01-16-2013, 11:34 AM   #25
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Anyone have the service bulletin number?

My '12 2LS has been in the shop twice for misfires in cylinders 2 and 4.
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Old 01-16-2013, 03:38 PM   #26
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If I had time for a new engine, I'd have taken the hard stance, but I couldn't wait for it. Not with a new job to start.

We made the trip safely to the east coast, all 2,100 miles of it through snow and absolutely pouring rain. It's amazing what a day late resulted in for travel.

I am, though, hearing a "whoomp, whoomp, whoomp," sounds that gets fast and slower as I accelerate and decelerate now that wasn't there before all the repairs. It doesn't sound like its coming from under the hood though, like maybe it's the tires? They're all balanced, I checked that. I can't imagine it would be the hubs when I noticed it at under 27,000 miles.

It is time to get new tires, but I can't imagine tread wear would do it.

Any thoughts guys? I've heard the timing belt could make a similar sound but the car runs fine and I don't feel any vibrations or anything or get a light. They did completely take the engine apart so it does have me worried. But again, we did drive 2,100 miles with no issues.
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Old 01-19-2013, 03:14 PM   #27
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I think the sound is just the tires. Looking at them, they're getting into the replacement zone on wear, and not being able to rotate them has probably taken them down a bit faster.

So, outside of the headache of the wait, looks like they knocked that repair out pretty satisfactory.
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Old 01-20-2013, 03:19 PM   #28
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I am having sort of the same problem. I have had my car a little over a month. about a week in, my check engine light came on, saying service stablility tract,m except my car does not act weird at all, the light seems to randomly come on and off. I took it in and they told me they couldnt find anything wrong, except when they shook the key around in the ignition a bit, the light would come on and off. They suggested taking everything off the key ring and only have the key to the car. it seemed to fix the problem...for a week and a half, it is coming on again. Also for 3 mornings in a row when I started it up to go to work, the speedometor was at zero, and would kick in about 2 miles down the road. Related problems? Any possibility this could be related to the cold? Or just something with the wiring?


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Old 01-20-2013, 03:26 PM   #29
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This is turning into an epidemic!
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Old 01-22-2013, 01:06 AM   #30
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The LLT/LFX engines have a timing chain, not a timing belt.

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Old 01-22-2013, 11:11 AM   #31
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I am having sort of the same problem. I have had my car a little over a month. about a week in, my check engine light came on, saying service stablility tract,m except my car does not act weird at all, the light seems to randomly come on and off. I took it in and they told me they couldnt find anything wrong, except when they shook the key around in the ignition a bit, the light would come on and off. They suggested taking everything off the key ring and only have the key to the car. it seemed to fix the problem...for a week and a half, it is coming on again. Also for 3 mornings in a row when I started it up to go to work, the speedometor was at zero, and would kick in about 2 miles down the road. Related problems? Any possibility this could be related to the cold? Or just something with the wiring?


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I would suggest taking it back to the dealership where you went first to see if they can diagnose this for you. Please let me know any updates.

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Old 01-22-2013, 09:06 PM   #32
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The LLT/LFX engines have a timing chain, not a timing belt.

John B.
That's correct, it is a chain. Force of habit I referenced the belt.

And for the user that asked for the bulletin code, I'll see if it's in the paperwork they gave me. Just showing how inept that dealership is, they handed me the warranty paperwork they have to submit to GM when I walked out the door. It wasn't until I was getting in my car and pulling away that a woman came running out to get it. I did take a look at it and saw that this would have cost me $4,800 between the chain and gaskets and labor to clean the engine out.
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Old 01-24-2013, 08:53 PM   #33
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Anyone have the service bulletin number?

My '12 2LS has been in the shop twice for misfires in cylinders 2 and 4.
The bulletin number is "#PIP3146D for excessive carbon on top of valves."

When they reassembled the engine they then received codes P0017 and P0016 which read, P0017 - "Crankshaft position sensor - exhaust camshaft position not plausible bank 1" and P0016 - "Crankshaft position - intake camshaft position not plausible bank 1"

That in turn led them to the bulletin, which I don't have, that says the timing chain is slack.
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Old 07-30-2013, 03:05 PM   #34
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It's been six months and my Camaro has run just fine... that is until I let it sit for a week while we left for vacation and returned to fire it up today. Everything went fine until I got out of the driveway...

The Stabilitrak service warning returned, engine light began flashing and for my 7-mile drive to work the car slammed in and out of gear, especially on the down-shift. The dealership out here (which has been miles better than the one I dealt with in Wyoming) can't get it in for me to even drop off until tomorrow, in hopes they can look at it by the end of the week.

She's now at 41,295 miles. So the 13,000 or so miles since the initial head gasket and timing chain replacement were worry free... until now.
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