Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Lock Cylinder Tumblers
Each of the 4 depths on the key has corresponding tumblers, sometimes referred to as plates or wafers. The numbers are stamped on the tumblers for identification. Door and liftgate tumblers and ignition tumblers represent 3 different series. There are also three different compression springs. It is essential that the correct components be used in the tumbling of locks. The compression springs are inserted into the springs wells, and then the correct tumblers are inserted into the tumbler wards for the door and liftgate. The ignition is tumbled differently. Insert the correct tumbler into the tumbler wards then insert the tumbler springs on top of the tumblers.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.