Jacking Points
I could take a GM drawing and modify it to show a 4 X 4 placed across the car under the roof panel and then say the jacking points are at the ends of the 4 X 4. Just because I started out with a approved GM drawing, does not make my modified drawing an approved GM drawing and anyone who follows that drawing and it's instructions are stupid if they beleive they are following a GM approved drawing.
If you are a "stick to the manual" kind of guy, or just to scared to make any decisions on your own without consulting a GM engineer, stick to the EXACT procedure as described in the manual.
But if you are a crazy wild eyed maverick you may want to look into life beyond the owners manual. We can share pictures of our "folded in half" C6s!
If you are a "stick to the manual" kind of guy, or just to scared to make any decisions on your own without consulting a GM engineer, stick to the EXACT procedure as described in the manual.
But if you are a crazy wild eyed maverick you may want to look into life beyond the owners manual. We can share pictures of our "folded in half" C6s!

Even something as simple as jacking a car can lead to problems unknown to the person doing the jacking at a later date. GM is quite adamant as to how/where to jack on the crossmembers, for the end user. Sure, you, and others, may jack in the middle of the crossmember or jack with the entire weight of the front of the car supported by a single rib on the crossmember, but you could create a stress fracture and not be aware of it. Some time down the road, that stress fracture enlarges due to forces on the crossmember other then the original jacking, causing a premature failure.
Personally, I'll accept the fact that the GM engineers that designed the car and the crossmember, know what he's doing and I will follow his instructions as to where to jack. Maybe it's just one engineer respecting the knowledge of a fellow engineer. I, for one, do not want to experience a premature failure of the suspension while doing 150 MPH on the 33 degree banked turns at Talladega(which I do).
Of course you are fully capable of making any decision you wish. Kind of like the home brewed engineer that tried to remove a 700 pound engine/transmission from his car using his kid's backyard swing set. He also made a decision, but not necessarily a correct one.
Last edited by JoesC5; Feb 24, 2012 at 02:58 PM.

Life is full of risks. Ultimately we will have to take responsibility for the decisions we make.
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