Truck Forums - Safest way to jack truck...

GMC Sierra 1500 SLT 5.3L
Where is the best place to jack the truck if you wanted all 4 tires off the ground at once?
Seem’s to be allot of different opinion’s and will probably get allot more but:
Is it safe to jack on the front cross member to lift both front tires at the same time?
When doing this where should the jackstands be placed, Under the frame?
For the rear end under the differential?
If you jacked on the frame is it safe to jack one side up, place jack stands then do the other?
Seems this may be hard on the frame.