GM 22064760
Strut, Rear

It is unsafe to unpickle the snap ring that resides in the shock absorber's top tube since high pressure gas would force out shock absorber contents with such force it could cause serious harm. Wear safety glasses for protection when drilling and centerpunching the shock absorber cylinder while being cautious to keep the tube from getting damaged. A centerpunch should form a 10 mm (0.4 inch) indentation at the bottom end of the tube. Position the shock absorber in a vise at horizontal orientation when it extends to its maximum length. Drill a 5 mm (3/16 inch) hole through the centerpunch mark to allow gas or gas/oil mixture expulsion while using shop towels to contain the oil. Drilling begins with creating an indentation at the tube center using the centerpunch and using this mark to drill a second hole with the same drill bit while treating the oil spill with shop towels. Before you remove the shock absorber from the vise position the tube horizontally with the hole facing down to drain the oil by moving the rod end-to-end through the tube opening.