Rear End Clunk - Driveline

[Panzer Leader]

Don't know if the V6 driveshaft was different from the Gt or not. Mind developed the dreaded "clunk". It became even more noticable when the ploy bushings were installed. BTW, I thought that if the U Joints went out, a complete new driveshaft was the only answer. Now I see that CP shows a kit available. Is this correct?

[Crazy Paul]

Don't know if the V6 driveshaft was different from the Gt or not.

There's 4 different driveshafts in G8's
2008 5 speed auto
2009 5 speed auto
6 speed auto
6 speed manual

I thought that if the U Joints went out, a complete new driveshaft was the only answer.

True when dealing with available GM parts.

Now I see that CP shows a kit available. Is this correct?

False.
No U joint kit.... just Front rubber coupling kit, Rear rubber coupling kit, Fasteners kits.

[09g8gt09]

Well my dealer said it has to be the new suspension. Got the car back drove around the block and the clunk happened again. Well maybe until something breaks then.

[GM Customer Service]

Great info. Please let me know what they blame or fix next.

Do all of the g8s come with 100k power train warranties?


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Rawyzf,

I would be happy to see if you are still in your Powertrain Warranty. Please send me your VIN through PM.

Thank you,

Tina
GM Customer Service

[Rawyzf]

Rawyzf,

I would be happy to see if you are still in your Powertrain Warranty. Please send me your VIN through PM.

Thank you,

Tina
GM Customer Service

Tina,

I talked with my dealer, I'm still within the power train warranty. I have until 100031

Ryan


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[Panzer Leader]

For awhile I toyed with the idea of a GForce custom one piece shaft with servicable/replaceable U Joints. There was a lot of discussion about the "thud"/"clunk" especially when shifting from Park to Reverse. At least that was where I really noticed it. GM said that a certain amount of "slack" was OK and should be expected.

[Rawyzf]

For awhile I toyed with the idea of a GForce custom one piece shaft with servicable/replaceable U Joints. There was a lot of discussion about the "thud"/"clunk" especially when shifting from Park to Reverse. At least that was where I really noticed it. GM said that a certain amount of "slack" was OK and should be expected.

If this ends up being work outside of warranty, I'll be going gforce or something similar.

[Panzer Leader]

Of course, I really thought it was because the driveshaft and transmission were built at the Moscow Number Five Tractor and T-34 Tank Factory (LOL)

[GM Customer Service]

Tina,

I talked with my dealer, I'm still within the power train warranty. I have until 100031

Ryan


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Ryan

Ryan,

Thank you for responding back. Happy to hear you had your question answered about the Powertrain Warranty. If you have any questions, comments or concerns please feel free to let me know.

Thank you,

Tina
GM Customer Service

[-Ray-]

Tina, you are working overtime or your on the west coast.