Sierra 1500 2WD V8-5.3L VIN B HO (2006)
1. Make an indentation 10 mm (0.4 inch) from the bottom (4) of the tube (3) using a centerpunch.
2. Clamp the shock absorber in a vise horizontally with the shock absorber rod (1) completely extended.
3. Drill a hole in the shock absorber at the centerpunch (4) using a 5 mm (3/16 inch) drill bit. Gas or a gas/oil mixture will exhaust when the drill bit
penetrates the shock absorber. Use shop towels in order to contain the escaping oil.
4. Make an indentation in the middle (2) of the tube (3) with a centerpunch.
5. Drill a second hole in the shock absorber at the centerpunch (2) using a 5 mm (3/16 inch) drill bit. Oil will exhaust when the drill bit penetrates the
shock absorber. Use shop towels in order to contain the escaping oil.
6. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan horizontally with the holes down. Move the rod (1) in and out
of the tube (3) to completely drain the oil from the shock absorber.