2010 V6 possibly seized ?? - ModernCamaro.com - 5th Generation Camaro Enthusiasts
V6 Engine Discussion 3.6L LLT V6 | Exhaust | Ignition | Induction | Intakes

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post #1 of 32 Old 01-19-2015, 11:55 AM Thread Starter
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2010 V6 possibly seized ??

Im hoping someone here can come up with a reasonable theroy. The other night on the highway I pulled out to pass a semi, everything was going well until I hit 160KPH/6K RPM all of a sudden the engine sounded like it was screaming, kinda like those import tuner things when they hit the rev-limiter and the tach was boucing even though I hadn't come close to redline. I let off the fuel and shifted to manual to up shift to drop RPM, then it went dead. Shifted to N tried to restart, nothing. Pulled over and tried restarting it, first few tries, nothing, after a few minutes, trying to restart only causes the starter to kick out but the engine wont turn over. I can feel it trying to turn, but nothing. Voltage was a little under 12 so I tried giving it a boost, still nothing. As it was dark and I was in the middle of nowhere I didnt have the opportunity to investigate much more, got it towed to the dealer and have been told they will try and look at it in a few days...... I fear the worst as my experience points to seized..... Anyone have a better less destructive theory ???
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post #2 of 32 Old 01-19-2015, 02:20 PM
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You did the right thing. Let the dealer have a look.

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post #3 of 32 Old 01-19-2015, 07:27 PM
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It shouldn't just seize up like that unless it has not oil in it.

The other option is that it broke a rod and that is preventing it from turning over.
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post #4 of 32 Old 01-19-2015, 09:25 PM Thread Starter
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Fluids were all good, no idiot lights or other signs of trouble, dealer finally called ...... It's definitey seized, they are tearing it apart to find out why, I'm thinking it may have something to do with the timing chains that they replaced in September, maybe somebody put something back together wrong ?? Possibly timing chain slipped/broke and Pistons and valves got a little too cozy ?
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post #5 of 32 Old 01-20-2015, 10:08 AM
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LLT constantly had oil pick up issues and chain stretching didn't they?

Hopefully they do well by you


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post #6 of 32 Old 01-20-2015, 10:58 AM Thread Starter
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Thats what I am starting to see the more I research the LLT
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post #7 of 32 Old 01-20-2015, 11:03 AM
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powertrain warranty still applicable?

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post #8 of 32 Old 01-20-2015, 11:42 AM Thread Starter
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Thankfully yes, until Aug 26 of this year, glad it happened now and not 2 weeks after the warranty expired lol Still waiting to hear what the cause was and whether they will rebuild/replace ?
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post #9 of 32 Old 01-20-2015, 04:14 PM
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Whew!!!! what a break ... hope for the best

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post #10 of 32 Old 01-20-2015, 05:09 PM
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Stretch chains will not prevent it from turning over ....even if the chains were taken off then the pistons will bend the valves out of the way.

...maybe if the chain snapped and got wedged in there some how, but that would be a one in a million.

Keep us posted, I'm always interested in how things break so I can analyze the failure.
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