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Old 01-09-2019, 10:58 AM   #1
Saturnl300 03
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Default Saturn l300 squeak

I have a squeaky noise on the rear end of the vehicle when I hit any type of bump or even juss driving an the car bounces a little. I've replaced the upper control arm bushings an 2 of the bushings at the lower kuckle. I'm going to replace the other 2 knuckle bushing soon but I'm thinking that's not what's making the noise so I dont want to keep throwing money at it. It's a 03 l300. Please help ! I tried posting a link to a YouTube video of exactly what it's doing but unfortunately it would not let me.

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Old 01-09-2019, 02:49 PM   #2
floridasl22002
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2003 L-Series 3.0L Sedan
Default Re: Saturn l300 squeak

It could be that the upper and lower suspension bushes (also known as rose joints) have worn out.

You have 6 main bushings on the rear suspension;

2 upper rose bushes
2 lower rose bushes
2 trailing arm bushes at the forward end of the arms.

I replaced all 6 last summer on my sons 2003 L300, same year as yours. They were in a terrible state. I do believe I put a thread on my job.

You also have the Lateral arms, which you said you replaced the upper bushes and were going to replace the lower ones.

Apart from that, the only other bushes you have are the actual rubber bushes that isolate the rear suspension to the body and of course the 2 rear struts.

The top of the struts is hidden behind the plastic inner fender, so can get overlooked. If you try and bounce on the rear fenders you may be able to determine if the squeak is coming from the struts.

At 15 years old, there are bound to be lots of rubber stuff that's worn, perished or just plain knackered.

On the rose bushes and trailing arm ones, I bought mine from the UK as the prices are much better. The L series was based on the Opel Vectra B. That car was a big seller in Europe, so the parts market is so much better than here where the L series didn't sell well and Saturn shut up shop.
Hope this helps

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Old 01-09-2019, 04:11 PM   #3
Saturnl300 03
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Default Re: Saturn l300 squeak

Well after some searching i guess i replaced the lower rose bushes an next is the upper. The other ones I replaced was the ones that are by the gas tank. I'm sorry for not knowing all the part names im new to working on cars. But I've managed to do all my own work on this car. I still have a feeling that replacing the last 2 upper rose bushes is not gonna fix my squeaking problem it sounds like 2 pieces of steel or something rubbing together. There is a YouTube video that is the same exact noise mine has if u have time to look at it it's called (2000 saturn squeaky rear). I will go home today and check the rest of the stuff u recommended. And also I replaced both rear struts so that's not it either.

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Old 01-09-2019, 06:17 PM   #4
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2003 L-Series 3.0L Sedan
Default Re: Saturn l300 squeak

Drive in the Rust Belt? I wonder if one or several steel bushings are worn. They're hiding on the ends of upper and lower control arms. Several worn ones were found when I struggled to replace them.
Attached Images
File Type: jpg steel bushings.jpg (10.3 KB, 2 views)
File Type: jpg worn steel bushing next to new one.jpg (26.6 KB, 2 views)

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Old 01-10-2019, 12:18 AM   #5
Saturnl300 03
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Default Re: Saturn l300 squeak

Thanks guys I replaced the upper rose bushings an it solved the problem. No more squeak!

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