Corvette V8-6.0L VIN U (2005)
All lock tumblers are shaped alike with the exception of the notched position on one side. As the key is inserted into the lock cylinder, the tumblers are
lowered to the correct height so that notches on each tumbler are at the same level. When the notches on all six tumblers line up, two small springs
push the side bar into the notches, allowing the cylinder to turn in the cylinder bore. Five types of tumblers are used in making the lock combinations,
and each is coded and stamped with a number between 1 and 5.
ASSEMBLING AND CODING IGNITION LOCK CYLINDERS
TOOLS REQUIRED
J 41340 Ignition Lock Holding Fixture
1. Determine the tumbler numbers/arrangement:
1. Place the tip of the key directly over the tip of the illustrated key.
2. Inspect that the diagram outlines the key.
3. Starting with position 1 (open end of cylinder), find and record the lowest level (tumbler number) that is visible.
4. Repeat the previous step for positions 2-10.
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:
