MONTE CARLO Jacking up a MCSS to replace wheel

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Anyone here use their floor jacks to regularly lift from the frame rails?

Also anyone here use the rear differential to jack both sides of the rear at the same time?
 
Frame rail is fine but you need to lift it high enough until the suspension reaches the extension limit before the tire comes off the ground.
Less lifting required if you lift either by center of rear axle, near the end, like the shock mount. In front put the jack under the control arm, near the ball joint.
 
Only put a jack under the frame where is is double thick (the joints where the side rails meet the front and back sections. I have an El Camino with a big bend in the center of the side rail where someone tried to jack up the car from the center.

Using the axle is fine and even recommended by GM. Page from Cutlass CSM your car is the same.
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Make sure the teeth on the jack pad are already up against something so it won't slide. And of course always give the car a good wiggle, and put the old wheel under the frame so if it falls it probably won't cripple/kill you.
 
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Anyone here use their floor jacks to regularly lift from the frame rails?

Also anyone here use the rear differential to jack both sides of the rear at the same time?
Used both the area in front of the rear wheel where the rear section meets the side rails (Area where the rear control arms are located) and under the rear differential. When jacking under the rear differential be sure the jack pad is contacting the differential case and not the sway bar. Normally just enough space to get the jack pad between the housing and the bar. Jacking on the bar is a quick way to breaking the ends off at the control arms.
 
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Under the center if putting on jackstands, Under the spring pocket of the lower control arm or at the boxed section of the frame where the side and front rails connect behind the wheel under the fender (Torque Box) for tire changes.
 

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