TrailBlazer 2WD L6-4.2L VIN S (2003)
lowered to the correct height so that notches on each tumbler are at the same level. When the notches on all 6 tumblers line up, 2 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:
1.1.
Place the tip of the key directly over the tip of the illustrated key.
1.2.
Inspect that the diagram outlines the key.
1.3.
Starting with position 1 (open end of cylinder), find and record the lowest level (tumbler number) that is visible.
1.4.
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.
