GX - 1st Gen (2003-2009) Discussion topics related to the 2003 -2009 GX470 models

NEW clunk please help

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Old 08-04-11, 10:05 AM
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matts04gx
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Default NEW clunk please help

Hi,

I just purchased a 2004 GX with only 45K miles and I love the truck. I have driven one with the TSB clunk and my current problem is different. When I stop at a light and go to start driving again I feel a thud when I take my foot off of the brake. There is no problem when I stop just when I go to start again. Is this a serious problem or normal?

I talked to Lexus before buying the truck and they said that the TSB fix had been repaired.

Thoughts?

Thanks for the help.
Old 08-04-11, 11:46 AM
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ALAN553
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Originally Posted by matts04gx
Hi,

I just purchased a 2004 GX with only 45K miles and I love the truck. I have driven one with the TSB clunk and my current problem is different. When I stop at a light and go to start driving again I feel a thud when I take my foot off of the brake. There is no problem when I stop just when I go to start again. Is this a serious problem or normal?

I talked to Lexus before buying the truck and they said that the TSB fix had been repaired.

Thoughts?

Thanks for the help.
if the repair was done than there is a record of it at any Lexus dealer, because it sounds like the good old driveline clunk
Old 08-04-11, 02:18 PM
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matts04gx
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Alan,

I thought the old one occurred after the vehicle came to a stop? I can stop for any length of time and nothing happens. This only occurs it when I let off the brake and begin to hit the gas.

Matt
Old 08-04-11, 02:38 PM
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gordie
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Matt,

My '05 (80K miles) does the same--slight thump when accelerating from stop but not when coming to a stop. My driveshaft was "repaired" according to specs in '05 which are now different so the original "fix" seems effectively nullified. However, I didn't own the truck then, so I don't know how bad it was at the time.

The current thump is so subtle that I don't plan to do anything about it. I'm out of warranty and so many people report a rougher ride post clunk fix that it doesn't seem worth it to me. My ride is quite bouncy as is, so I certainly don't want it to get worse.

That said if anyone knows the cost to repair the driveshaft per current specs, out of warranty, I'd like to know. Also, please chime in if I'm doing damage to anything by living with this very minor clunk (not even positive that's what it is, but I assume so).
Old 08-04-11, 07:01 PM
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ALAN553
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I think I saw the new drive shaft on Sewell for less than 300, it's only 8 bolts, a private shop shouldn't want more than maybe 125 to replace it and lube it, only takes 1/2 hour
Old 08-04-11, 07:10 PM
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ROSCOGX470
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Originally Posted by ALAN553
I think I saw the new drive shaft on Sewell for less than 300, it's only 8 bolts, a private shop shouldn't want more than maybe 125 to replace it and lube it, only takes 1/2 hour
Not too bad. Also a sticky caliper could possibly mimick the clunk.
Old 08-04-11, 07:30 PM
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Jameym00
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Try to put grease in the grease fittings. The shaft and the ujoints have them.
Old 08-04-11, 08:24 PM
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snhrph
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Originally Posted by Jameym00
Try to put grease in the grease fittings. The shaft and the ujoints have them.
Definitely do that. But be careful when greasing the u-joints, you don't blow the seals.

Splines, on the other hand, will take a LOT of grease.

While under the truck, inspect the motor and transmission/transfercase mounts. I doubt that there is anything wrong with them, but just to be safe...
Old 08-05-11, 11:20 AM
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matts04gx
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Thanks for all the help. I think I am going to have the dealership look at when I get my next oil change just for piece of mind.
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