SCLT1

So three of the bolts I was able to crank out of the control arms but one was stuck so cut it out. I found a replacement at Lowe’s and attached a picture of other short stock bolt with new one. In case you can’t see it’s 8.8 grade M12-1.75-90. It’s not the exact thickness but it should be fine right? This isn’t a track car or DD.

sjsingle1

iTrader: (1)

I am kinda partial to the locating tab on the bolts.............wonder if they are still available from GM

SCLT1

I still have that and can weld it on.

SCLT1

I did see some other companies offering replacement bolts or new bolts with aftermarket control arms and they look like mine as well. 8.8 for mine to be exact if that helps compared to 8.

FirstYrLS1Z

iTrader: (4)

"one was stuck so cut it out", what do you mean by cut it out, how did you cut it out.

SCLT1

Cut the nut off and worked the bolt out.

FirstYrLS1Z

iTrader: (4)

So you're replacing a 14mm x 2.0 bolt with a 12mm x 1.75 bolt, not a good idea.
What is the grade marked on the factory bolt ? 8.8 is the 2nd lowest grade. Above 8.8 are 9.8, 10.9, 12.9.

SCLT1

Over at 3rd Gen guys used that size unless there is a big difference between the 4th Gen I have no idea. Took me a bit but the factory bolt says 10.9 on it so like you said better stick with that. Thanks.

FirstYrLS1Z

iTrader: (4)

10.9s' and 12.9s' are the 'critical strength' suspension bolts.

SCLT1

I have found a GM replacement bolt from some vendors for decent prices but don’t include a nut. So will check advanced if they have something the same size and 10.9 class. Also a local specialty hardware shop here carries some hardcore bolts and have 10.9 in stock so will check them and just weld the hook washer thing onto the bolt.