Express 3/4 Ton Van V8-4.8L VIN V (2003)
2. Starting with position 1, insert the tumblers (4) into their corresponding slots in the coded order.
3. Using your fingers, pull out the side bar (3) until the tumblers fall completely into place.
4. Insert one tumbler spring (2) above each tumbler (4).
5. Lubricate the tumblers using Superlube(r) GM P/N 12346241 or equivalent.
6. Insert the spring retainer (1) prongs into the slots at the end of each cylinder.
7. Press down the retainer (1) until fully seated in the depression.
8. Inspect for proper tumbler installation:
8.1.
Hold the spring retainer (2) in position.
8.2.
Insert the key (1) into the cylinder.
8.3.
The side bar (3) should drop down flush with the cylinder diameter if properly installed.
