tranny noise - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-29-2007, 12:36 PM   #1
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Default tranny noise

my transmission on my 95 Bonn is making a clanking noise.Just started yesterday. Shifts out good while driving but it makes a loud clanking noise when slowing down/taking off..? any ideas? could it be the transaxle?
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Old 04-29-2007, 12:57 PM   #2
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Is the transmission and transaxle the same thing? I've read an article online and not sure if they are same or different? I checked the fluid level on my 95 Bonn... is this the same for the transaxle too or is it located somewhere else?
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Old 04-29-2007, 12:58 PM   #3
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Check your catalytic converter first. When they went bad on both my Bonnevilles, it sounded very much like trans noise. Almost fooled me both times. Shake the cat side to side and up and down.

In the meantime, in case it IS the trans, check the color, level, and smell of your trans fluid when it'* hot right after a drive.
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Old 04-29-2007, 01:11 PM   #4
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I had the cat removed 2 years ago..
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Old 04-29-2007, 01:12 PM   #5
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When sitting in park w/the motor running...it makes the same noise when increasing the gas..reaving the motor a lil.... popping/clanking noise???
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Old 04-29-2007, 01:35 PM   #6
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You're going to have to shoot audio or video for us to hear it, and give us accurate descriptions of the conditions it happens in. Temps, gears, accell, decell, etc. And It might be good for you to get a mechanic'* stethescope to narrow down the location of the noise a bit.

Troubleshooting noises over the internet is very difficult.

For the record, you may want to consider putting a cat back on the car. Not just for environmental reasons, but also to get back some of the low-end grunt you gave up when you pulled it. Not to mention the fact that anyone on this Forum that knows will get a $250 'narc reward' from the EPA for turning you in.
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