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Subframe and differential mount issue

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Old Dec 15, 2024 | 06:02 PM
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Default Subframe and differential mount issue

Looking for some help here. Way back in the spring I pulled out my driveline to get my trans, diff, and torque tube rebuilt. It was a long summer and fall of the car being apart but I’m finally putting it back together. I’ve got the all of those piece back in and now I’m ready to install my subframe. This is where I’m running into an issue. I can’t get the diff mount to attach to the differential. The only bolts that I have left in my pile that fit seem like the shoulder on them is too long. They bottom out about a quarter of an inch before the mount is tight to the diff. Am I missing something here? I can’t think of a reason why I have this large gap.
Any help is appreciated.


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Old Dec 15, 2024 | 06:33 PM
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Originally Posted by schaumi
Looking for some help here. Way back in the spring I pulled out my driveline to get my trans, diff, and torque tube rebuilt. It was a long summer and fall of the car being apart but I’m finally putting it back together. I’ve got the all of those piece back in and now I’m ready to install my subframe. This is where I’m running into an issue. I can’t get the diff mount to attach to the differential. The only bolts that I have left in my pile that fit seem like the shoulder on them is too long. They bottom out about a quarter of an inch before the mount is tight to the diff. Am I missing something here? I can’t think of a reason why I have this large gap.
Any help is appreciated.


The real question is......where did you use the correct bolts ?

Here is the correct bolt:

https://parts.gmparts.com/product/gm...LKoeCpMrdM-UNK
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Old Dec 16, 2024 | 12:20 PM
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Ugh. You’re probably right. The only bolts I can think that I might have confused them with are the top 2 that bolt the diff to the trans. They will suck to get back out.
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