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Old 02-22-2013, 10:18 PM   #1
traildevil
 
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Clutch knocking sound

Okay so i was going threw the drive thru at mcdonalds today and had my window down and have never heard this noise before. I was in 1st gear had my rpms at about 800 and slowly letting the clutch out, got about half way out so my car was inching forward and then while still holding my foot on the gas lightly i pushed the clutch in quickly and heard a weird like knocking sound, not sure how to explain the sound but it knocked 3 times or so, kinda sounds like when you grab a drive shaft and spin it counter clockwise and clockwise to check if there is much play in the differential and how it makes a clunk or knock sound because itll only let you spin the shaft so far while the vehicle is in park. Sounds like that kind of clunk/knock but did it like 2-3 times... idk my buddy said im just paranoid, and that its probably because im disengaging the clutch while the gas is still being held onto.. Any answers or hints as to what i should check for this noise would be appreciated. Thanks
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Old 02-22-2013, 10:33 PM   #2
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...Don't take the car to MacDonald's again, and the noise will stop...lol
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Old 02-22-2013, 10:43 PM   #3
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Gulp... I just got back from McDonalds (was craving since I haven't had it in months) and I went through the drivethru. Luckily I have an auto!
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Old 02-22-2013, 11:22 PM   #4
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Lol, idk what it would bee! But do you know what kind of noise im talkin about by how I explained it? I couldn't think of any other way to describe it lol
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Old 02-22-2013, 11:30 PM   #5
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Lol, idk what it would bee! But do you know what kind of noise im talkin about by how I explained it? I couldn't think of any other way to describe it lol
....manual clutch/drive-/rpm clunking...operator error...lol...don't worry, you'll figure it out...a few times won't hurt anything, no worries...
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Old 02-22-2013, 11:33 PM   #6
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My 2011 SS makes this noise too if I'm driving slow and I push the clutch in fast. There are other discussions of this same noise on this site too. It is normal...I believe it is just the driveshaft/u-joints knocking from the sudden disengagement from the engine.
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Old 02-22-2013, 11:43 PM   #7
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Okay well thanks for the responses! Im gonna put it on the lift at work tomorow and check things just to make sure there okay I appreciate it!
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Old 02-22-2013, 11:45 PM   #8
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...Don't take the car to MacDonald's again, and the noise will stop...lol
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Old 02-22-2013, 11:48 PM   #9
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Drive line clunk the dealer will print you a copy of the problem
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Old 02-23-2013, 11:03 PM   #10
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What do you mean the dealer will print me a copy? I also noticed tonight no matter how fast im going when I disengage the clutch in first gear I get a single clunk that sounds like its coming from the rear differential area
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Old 02-24-2013, 02:12 AM   #11
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I hear 2 noises that sound like knocking. The first it sounds like someone is knocking on the inside of the trunk. Only happens when it's really cold and only when I'm stopped. Second noise sound like its coming from passenger side but only when I'm coming to a stop and if I have someone else with me. Apparently it's normal
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Old 02-25-2013, 11:47 AM   #12
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Quote:
Originally Posted by traildevil View Post
Okay so i was going threw the drive thru at mcdonalds today and had my window down and have never heard this noise before. I was in 1st gear had my rpms at about 800 and slowly letting the clutch out, got about half way out so my car was inching forward and then while still holding my foot on the gas lightly i pushed the clutch in quickly and heard a weird like knocking sound, not sure how to explain the sound but it knocked 3 times or so, kinda sounds like when you grab a drive shaft and spin it counter clockwise and clockwise to check if there is much play in the differential and how it makes a clunk or knock sound because itll only let you spin the shaft so far while the vehicle is in park. Sounds like that kind of clunk/knock but did it like 2-3 times... idk my buddy said im just paranoid, and that its probably because im disengaging the clutch while the gas is still being held onto.. Any answers or hints as to what i should check for this noise would be appreciated. Thanks
I would recommend taking your vehicle to a dealership for a proper diagnosis as they are the experts. Please let us know what you decide to do.

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Old 02-25-2013, 12:02 PM   #13
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Funny, I always hear strange noises after Taco Bell ...

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Old 02-25-2013, 12:14 PM   #14
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Funny, I always hear strange noises after Taco Bell ...

And smells, too...
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Old 02-25-2013, 04:10 PM   #15
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It is most likely the sound of the driveline slacking. Since the car has an independent rear when you disengage the clutch everything "settles" and when you re-engauge it tightens up again. Some people get a little concerned do to the unexpected nature but it is normal.
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Old 02-25-2013, 04:15 PM   #16
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And smells, too...

Called clutch funk......
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Old 02-25-2013, 08:19 PM   #17
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The dealer gave me bullentin number 03-07-29-004h manual transmission operating characteristics it goes over basic information, cold operation, gear rattle,neutral rattle, backlash, shift effort, non synchronized gears. So with all that said no matter what noise your car is making they have an excuse for it in this document. I think it's unacceptable for a 40 thousand dollar car to make this sound.
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Old 02-26-2013, 12:02 PM   #18
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Drive train slack. There are at least 5 places where this sound will transfer from. Normal. Continue going to McDonalds. All is well with your car.
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Old 07-25-2013, 12:16 PM   #19
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I have the same issue on a 2013 SS. I took it to the dealer and they said it was "normal... for now". Not sure what that means.
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Old 07-31-2013, 09:10 AM   #20
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That clunking sound you hear is normal. I freaked out too when I first got the car. However, this is how it's built (why, I don't know; ask GM). You will get used to it. Nowadays, I cant even make that noise happen even if I wanted to. You just have to get used to the car.
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Old 07-31-2013, 10:36 AM   #21
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Mine does the same thing when clutch disengages.
always at slow speed or creeping.
normal clutch noise i hope.
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Old 03-09-2014, 07:21 PM   #22
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Ill revive the post.

Same issue. Just like getting into out of the garage and stuff. Noise if the rpms are held and disengage clutch.

hmmmmm....

really? Normal??
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Old 06-09-2014, 10:51 AM   #23
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Im glad you revived this thread. I just bought a 2010 ss with 3,000 on it. (Was kept in a garage for the past 4 years). I notice this sound only when disengaging the clutch in first gear..with a load on it. Ive learned to just step on the clutch slowly and this doesnt happen. The theory about the driveline slack seems to make sense. But I agree that a 30k+ car shouldn't make that sound. I think we're okay though. Doing one or two burn outs is probably worse for your car than any "weird" sounds you're hearing
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