Transmissions and Drivetrain Need help with your trans? Problems with your axle?

9 bolt makes noise

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Old

Jan 30, 2023 | 09:51 PM

#1

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9 bolt makes noise

I have an 89 GTA with B/W 9bolt . Sometimes it makes a "wha-wha-wha".....wobble sound from the rear. Could something be bent or what? Bearings bad....Any help please??

Old

Jan 31, 2023 | 07:50 PM

#2

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Joined: Oct 2015

Posts: 145

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From: The Peach State

Car: '88 GTA

Engine: 355 SBC, AFR 195 heads, Stealth Ram

Transmission: 700r4

Re: 9 bolt makes noise

Do you have any additive in the fluid? I have to use it in mine.

Old

Feb 1, 2023 | 04:47 AM

#3

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Re: 9 bolt makes noise

Yes I put in an additive. Just seems like the drivers side is making a wobble noise.

Old

Feb 1, 2023 | 05:24 AM

#4

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Joined: Oct 2015

Posts: 145

Likes: 12

From: The Peach State

Car: '88 GTA

Engine: 355 SBC, AFR 195 heads, Stealth Ram

Transmission: 700r4

Re: 9 bolt makes noise

I'd say wheel bearing.

Old

Feb 1, 2023 | 05:51 AM

#5

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Re: 9 bolt makes noise

Where can I find the bearings at?

Old

Feb 1, 2023 | 07:11 AM

#6

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Posts: 2,611

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From: Louisville, KY

Car: 1983 Z28

Engine: 385 Fastburn

Transmission: T-5

Axle/Gears: BorgWarner 9-bolt posi, 3.27 gears

Re: 9 bolt makes noise

Quote:

Originally Posted by greyno3

Where can I find the bearings at?

Any parts store.

Old

Feb 2, 2023 | 01:13 PM

#7

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From: RI

Car: 1984 Camaro Berlinetta

Engine: LT1

Transmission: T56 6-speed

Axle/Gears: 4.11 LS1 Rear End

Re: 9 bolt makes noise

Additive not used in the 9-Bolt........ Just 75W90 (GM 1050010) gear oil.

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Old

Feb 2, 2023 | 01:23 PM

#8

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Re: 9 bolt makes noise

Thanks for that info!

Old

Feb 2, 2023 | 04:15 PM

#9

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Re: 9 bolt makes noise

Are the bearings taperd or roller?

Old

Feb 3, 2023 | 09:04 PM

#10

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Joined: Apr 2000

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From: South Windsor, CT

Car: '89 GTA

Engine: ZZ6TPI

Transmission: T56

Axle/Gears: Borg Warner 3.70:1

Re: 9 bolt makes noise

Quote:

Originally Posted by greyno3

Are the bearings taperd or roller?

Roller bearings, pressed onto the axles.

Old

Feb 3, 2023 | 09:52 PM

#11

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Re: 9 bolt makes noise

Is there a thread to repair this?

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