Door Lock Cylinder Coding

1. Handing is determined by color of pawl. Orange is left hand and green is right hand.
Fig 1: Door Lock Cylinder
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Ignition lock cylinder reads key cut position 4 through 9.
2. Insert the appropriate tumbler (5) according to the key code into the corresponding tumbler ward.
3. The tumblers will not immediately seat into position because the sidebar has been pre-assembled. The tumblers will have to be pushed past the sidebar with a small flat screwdriver or pocket knife.
4. The tumbler springs (4) should then be inserted into the spring wells in the cylinder (3) where they will sit on top of the tumblers.

Balance of Assembly

Fig 2: Door Lock Cylinder
Courtesy of GENERAL MOTORS CORP.
1. With key inserted into cylinder, insert cylinder into housing (2). This will hold the pawl (1) into position once the cylinder is inserted into the housing.
2. Shutter (8) and compression spring (6) are pre assembled to the cylinder in the service package.
3. Install the cap (9) by aligning the notch in the cap with the large drain slot in the housing and pressing the cap until it bottoms out and snaps onto the housing (2).