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Clunking /rattle noise

This is a discussion on Clunking /rattle noise within the General Help forums, part of the LSx Technical Help Section category; Okay I had a lil trouble labeling this topic....I have an 02 trans am ws6 with a 4l60e trans I ...

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    2002 pontiac trans am WS6

    Clunking /rattle noise

    Okay I had a lil trouble labeling this topic....I have an 02 trans am ws6 with a 4l60e trans I have just completed changing the fluid in it as well as changing the filter. After I was done I let it idle and warm up and than cycled each through the gears at idle each for a few mins and than took it for a test drive everything was fine. Later in the evening I took it out for a longer ride as I was waiting in a drive thru I heard a faint metallic clunking/rattling but its only really audible in the car in park and neutral. Does anyone know what this might be ?

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    '02 WS.6 / '07 Suburban

    Check your engine and transmission mounts.

    I assume you checked the fluid level after the change? With the transmission up to temp, the engine running and and the car parked on a level surface, slowly cycle through each gear and then once back in park pull the dipstick to check the level.

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    2002 pontiac trans am WS6

    Yes i checked the fluid after it was up to temp and cycle each gear for abt 2 mins....and the trans mount has been replaced once i did check it before i took the car off the stands it was still in good condition....any other ideas .....if its a cracked flexplate how can i inspect it without taking it out of the car?

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    2002 pontiac trans am WS6

    here is a video of the noise

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    '02 WS.6 / '07 Suburban

    Your best access to the flexplate is to pull the starter. You can then roll the engine over using a breaker bar and a socket on the balancer bolt. If it turns out you do need a flexplate, I have our stock one setting in my lower garage awaiting a new home.

    Any chance you bumped the exhaust while working on the transmission and moved something?

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    2002 pontiac trans am WS6

    I think it might be that catalytic converter on the pass side so i plan to take it off and check inside it after it cools down in an hour or so....and the only reason is cause i found a video where someone had the same sound...*crossing fingers*

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    Very well could be the issue.

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