To raise front end of vehicle, position jack under front end jacking point. To raise rear of vehicle, position jack under rear end jacking point. See Fig 1-Fig 6
.
Fig 1: Jacking Points (Astro/Safari) Courtesy of General Motors Corp.
Fig 2: Jacking Points (Blazer & Suburban) Courtesy of General Motors Corp.
Fig 3: Jacking Points (Van) Courtesy of General Motors Corp.
Fig 4: Jacking Points (Pickup) Courtesy of General Motors Corp.
Fig 5: Jacking Points (S10/15) Courtesy of General Motors Corp.
Fig 6: Jacking Points (Blazer/Jimmy) Courtesy of General Motors Corp.