Excerpts from Secrets of Lock Picking by Steven Hampton
SIDE-BAR CAR LOCKS
The side-bar lock is used mostly on General Motors cars and trucks since 1935. It is used on ignitions, door, and trunk locks. Side-bar locks can be hard to pick because you cannot feel or hear the tumblers align with the cylinders breaking point. A spring-loaded bar falls into place to allow the cylinder to turn when all the tumblers are aligned.
There is no way to tell when this happens. One learns to sense the bar while picking so that it seems to fall into place by itself. But for beginners, I recommend this technique for emergency openings: Peer down the keyway and locate the side groove ...
How to Pick a Side Bar Car Lock
Fortunately, most GMC autos have ...
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