What's that Rattle Under My Car?

A Rattling noise under your vehicle could come from many places. In this video, Andy shows you how to look for loose parts, shields, or components under your vehicle, and shows some common remedies that won't break the bank!

🔧 List of tools used:
• No Tools Needed

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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[AAuto]

√ *Watch the Video*
√ *Do it Yourself*
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[shaquetta]

Thank you, this was extremely helpful! The exact sound that my car is making.

[TheOneJPtv]

DIY GOLD!... I thought that rattle was the bearing in my serp tensioner and water pump shaft. THANK YOU A MILLION TIMES!!!!

[kennymillhouse]

I have been chasing a rattle on my 2012 Chrysler Town and Country and checking all the things I found on the internet and to no avail. I was at the point of selling the van as the rattle was driving me crazy. Finally, I resolved the issue, I replaced the rear shocks and no more rattle, hope this helps.

[potatolord]

Man, my car was making the same noise, thank you, sir. This saved me some diagnosis money at my dealership, thanks!!

[teecreagh]

You guys are a great resource for diy people

[lordkael]

how much does it cost for this to be checked? i don't have that a jack or that equipment to lift the car up. thanks!

[Kiwiiixoxo]

I don’t have a knocking sound but it’s more like a chain dangling from the bottom of my truck it sounds like when I make turns. Also when I turn it makes this ugly old sound. I’m really trying to learn as much as possible from YouTube on how to fix her but I’m a beginner homemade mechanic lol. I’ve only changed my tires, oil change, and diagnose my oil leaks but other than that I’m still learning

[Nuclear_plunge]

The rattling sound I get in my vehicle is when my foot is on the brake pedal.

[dimitriberozny]

Sway bar bushings or any of the plastic covers/bumper skirt causes many rattles.

[Ace-weyy]

I order my parts from you guys and excellent as described 💯‼️

[TheAnonTrucker]

My rattling sound sounds like loose change or a bag of screws rattling around whenever I accelerate at low speeds.

[stacybarnes]

I drive a 2005 GMC Sierra for work and have heard rattling while driving the past two days. Here’s the thing it’s not the whole time while driving though. It might occur after 15 -20 minutes up the road. I have checked under the hood and didn’t find anything wrong there. Also the fluid levels are fine. 🤷🏽‍♂️

[PappyNet]

Thanks! I have a mystery noise underneath my 2005 GMC Sierra 1500 VHO that started while it was in a local garage for repair service of multiple water leaks [H2O problems for 4 years!] I trust my local Mechanical Wizard because he has repaired HVAC problems in my truck and in my parent's 1997 Monte Carlo LS 3100 for $$.$$ when other garages wanted to charge $$$$.$$!
Mystery Metal Rattling Noise. On Sunday, March 31, 2024, early afternoon I turned the ignition key cylinder and the engine started immediately, but the noise was not has resounding and it seems that the noise gets quieter the next time I start the engine. the engine idled for nearly one hour while conversing with Brian [my neighbor whom is a very good mechanic in his own right] . Brian immediately crawled under my truck and ruled out the catalytic converters, heat shields, hangers and muffler. Brian thought the sound was greatest at the muffler and he noticed excess condensation [for the past 7 years, I don't think I drove more than 500-miles a year. On Saturday, March 30, 2024, while using a rubber mallet I tapped along the Catalytic Converters and Exhaust Pipes and could not see any movement, and the echo did not sound like the metal rattling noise. On Monday, March 25, 2024, I started the engine and listened to the rattling noise from underneath the truck, poured twelve ounces -(12-oz) of Marvel Mystery Oil in the engine oil crankcase and pressed the gas pedal down and it subdued the metal rattling noise, but did not eliminate it. This mystery noise problem occurred when my truck was in the local garage service. The Chief Master Mechanic [Brian] is awesome - he is a honest broker and takes on all jobs: I just wish I met him 10 years ago when I returned home to help my parents. The last few years either my truck or my parent's 1997 Monte Carlo LS 3100 was in his garage: I just swapped vehicles after repair and service jobs. For nearly 2-years one of our vehicles was in the garage. On Saturday, March 23, 2024, I retrieved my truck from Brian and he mentioned the mystery noise, but he wasn't sure of the cause. On February 02, 2024, Brian was ready to move my truck outside of his garage because he fixed the water leak problem, but the engine would not start. Brian telephoned me if I had a spare ignition key to bring to him because the ignition cylinder would not move or start the engine. None of my ignition keys would turn and start the engine. I visited a local locksmith and they made a new key from the GM Key Code - the new key ($25.00) would not start the engine. After searching the internet and learning that the GM Key Ignition Cylinder problem happens a lot to truck owners and conversing with Brian we decided that I need a new Ignition Key Cylinder. Brian successfully removed the original ignition key cylinder and installed the new ignition key cylinder: the key turned and the engine started then the mystery noise. The past four and one-half years I had water leaking into the passenger cab space from the third brake light, the cabin pressure vents and the rear windshield. After waiting for a couple of heavy rain showers I was confident and happy because Brian indeed fixed all of the leaks. I visited a Auto Body shop in Pensacola, Florida ~ 55 miles west from my home and replaced the headliner in June 2023 and within 2 weeks I had water leaking into the front passenger side. I returned to Brian and he fixed this fourth leak too.

[xinzang]

You need to check the clips that hold the fuel and brake lines.

[ZFighters]

Mine only makes that noise when taking off

[minhaazpatel]

I had some noise coming from
Under the car it was the metal protection sheet under the car, it is an old car so the screws were all rusted on the sheet, the mechanic told me to
Remove the sheet it wont affect anything, is that okay? Is that safe?

[lexmichael]

I have the same sound but it’s comming from my rear right side, any Idead what is that?

[Brush_and_bullet]

I know this is a stupid question but can high wind cause rattle in a car ?

[focus]

Just changed shocks but my car is feeling very bumpy (can feel ever tiny bumps on the road) and it sways side to side on slow speeds especially when turning. It was smoother before I changed the shocks. Could it be related to the shocks or would it be the control arms or steering rack?