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Old 08-21-2011, 09:21 PM   #1
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Weak Timing Chain on 2010's

I know GM addressed this at some point, but anyone know when? Trying to figure out if mine is one of the lucky 2010's that has a crappy timing chain.
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Old 08-21-2011, 09:49 PM   #2
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I thought it was for our engine when used in other model cars, I haven't heard of any Camaros having this issue.
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Old 08-21-2011, 09:54 PM   #3
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At over 80,000 mile on my Camaro, no problems.
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Old 08-21-2011, 11:45 PM   #4
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I thought it was for our engine when used in other model cars, I haven't heard of any Camaros having this issue.
Well I'm not sure, I know Scrming talked about his wife's vehicle having the LLT and mentioned the weak timing chain. Not sure if our's actually had the same chain or not, but I thought early 2010's did.. maybe not..
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Old 08-22-2011, 01:01 AM   #5
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At over 80,000 mile on my Camaro, no problems.
I see you have SW headers. LT's I assume? Which exhaust do you have them paired with?
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Old 08-22-2011, 05:27 AM   #6
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Quote:
Originally Posted by BaylorAirForce View Post
I know GM addressed this at some point, but anyone know when? Trying to figure out if mine is one of the lucky 2010's that has a crappy timing chain.


Found 2 threads on this subject. Along with the answer I posted a while ago that discussed this change in part numbers.


http://www.camaro5.com/forums/showth...6+timing+chain


http://www.camaro5.com/forums/showth...light=12616609 post # 66


Checked into this question, here is what I found.

12633451 and 12623452 were in production from 15July10



Timing chains are the same in all of the 3.6 engines

#12616609 for the primary chain

#12616608 for two of the secondary chains

They HAVE been changed up to #12633451 for Primary and #12633452 for secondaries.

Hopefully this will correct the issues.


It looks like GMPartsDirect caries all 4 part numbers.Primary ChainGM PART # 12616609CATEGORY: AllPACK QTY: 1GM LIST: $43.47OUR PRICE: $25.28Secondary'sGM PART # 12616608CATEGORY: AllPACK QTY: 1GM LIST: $49.56OUR PRICE: $28.82Primary ChainGM PART # 12633451CATEGORY: AllPACK QTY: 1GM LIST: $42.84OUR PRICE: $24.91Secondary'sGM PART # 12633452CATEGORY: AllPACK QTY: 1GM LIST: $49.11OUR PRICE: $28.55

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Old 08-22-2011, 05:33 AM   #7
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They HAVE been changed up to #12633451 for Primary and #12633452 for secondaries.
Cat does not mean the VIN# after need to be changed yet? Or did the factory make the necessary changes during build time?
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Old 08-22-2011, 06:04 AM   #8
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Cat does not mean the VIN# after need to be changed yet? Or did the factory make the necessary changes during build time?

After that build date posted the chains are to the new ones.
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Old 08-22-2011, 07:34 AM   #9
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hmm. my build was 9/22/09 so I may need to swap at some point.
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Old 08-22-2011, 08:35 PM   #10
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I believe we discussed this on this forum or the other one, but if you keep the oil changed regularly and use high quality oil you shouldn't have an issue. Right?
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Old 08-22-2011, 08:37 PM   #11
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Correct. That is what I have been told by my sources. Just keep the oil changed and you should be good. The issue was when the oil was left in to long and the dirt and friction started to wear on the chain.
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Old 08-23-2011, 05:39 PM   #12
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Well the wife's Acadia is getting some new chains... AGAIN! This set lasted 50,000 miles. I know my wife gets her oil changed regularly... Its covered under warranty... But still...
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Old 08-23-2011, 06:35 PM   #13
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Well the wife's Acadia is getting some new chains... AGAIN! This set lasted 50,000 miles. I know my wife gets her oil changed regularly... Its covered under warranty... But still...
What are the warning signs? Do they get noisy or does the timing start bouncing all over the place or what?
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Old 08-23-2011, 06:50 PM   #14
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What are the warning signs? Do they get noisy or does the timing start bouncing all over the place or what?
No warning signs, just check engine light.
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Old 08-23-2011, 07:06 PM   #15
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No warning signs, just check engine light.
You mean it doesn't cause a catastrophic failure?
It just get's a little loose and the ECU shuts the party down?
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Old 08-23-2011, 07:14 PM   #16
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You mean it doesn't cause a catastrophic failure?
It just get's a little loose and the ECU shuts the party down?
No failure. The ecu detects the cams aren't in the right position and throws a code... More info here:

http://engine-codes.com/p0008_chevrolet.html
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Old 08-23-2011, 07:18 PM   #17
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No failure. The ecu detects the cams aren't in the right position and throws a code... More info here:

http://engine-codes.com/p0008_chevrolet.html
Good to know, thanks!
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Old 08-24-2011, 02:50 PM   #18
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I just looked through my resources and did not see any documentation for the Camaro for this issue. If you are concerned about this issue on your vehicle I would suggest speaking with your dealership service personnel to see if they have ever seen anything in regards to this problem. Hopefully that will get you the answers that you're looking for but if not message me and I'll do some more research to see if I can find anything more on this. I hope this helps.

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Old 08-24-2011, 03:07 PM   #19
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Got the call from the dealership... They are replacing the timing chains again in the wife's Acadia... this time with the "updated" chains... (I thought they did this last time... ) Should be ready tomorrow...
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Old 08-24-2011, 03:15 PM   #20
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Got the call from the dealership... They are replacing the timing chains again in the wife's Acadia... this time with the "updated" chains... (I thought they did this last time... ) Should be ready tomorrow...
I would assume they are replacing the sprockets (this time) as well since worn sprockets will kill a new chain in about.... 50K miles!
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Old 08-24-2011, 03:59 PM   #21
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I would assume they are replacing the sprockets (this time) as well since worn sprockets will kill a new chain in about.... 50K miles!
you would think... but i doubt it... i'm guessing they are just throwing new chains on... I'll look at the service order when the wife comes home tomorrow..
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Old 08-25-2011, 12:37 AM   #22
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I've got less than 20K left on my warranty. How much does this run?
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Old 08-25-2011, 05:11 AM   #23
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I've got less than 20K left on my warranty. How much does this run?
Ok... spent some time googling this morning... I really couldn't find any solid cases of stretched timing chains happening in the Camaro. I found the issue in just about every other vehicle that uses the 3.6. Even found some in newer vehicles, like 2011 Acadias... Only found one reference to a mechanic who said they've seen it in the Camaro but I couldn't find an actual Camaro owner talking about the issue...

Seems odd that that the Camaro would seem be "immune" to the issue. I wonder if perhaps the chains are stretching but specs aren't as tight on the Camaro. Perhaps the calibration is a bit more tolerant...

As for cost... really didn't see anyone posting cost, since all of the repairs seem to be under warranty... Did find one 2005 Cadillac owner saying he had a $2900 bill...

Think it will be time to trade our Acadia in... and after seeing a few reports of 2011 Acadia having the same issue, i doubt we'll be sticking with GM... :(
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Old 08-25-2011, 08:53 AM   #24
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As for cost... really didn't see anyone posting cost, since all of the repairs seem to be under warranty... Did find one 2005 Cadillac owner saying he had a $2900 bill...
Good Lord.
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Old 11-10-2011, 02:25 PM   #25
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I know this is an older thread but figured I would post for prosperity's sake: Just had my car into the dealer for loss of power and an engine light. Guess what? Streched timing chain and I have 42K miles on it. Talked to the guy at Chevy and he said they have been seeing this in a lot of other models but not the Camaro. This is the first one they saw it in. He said there is a stronger timing chain that they are going to put in. All covered under the powertrain warranty.... THANK GOD!!!!
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