Question about 2007 Chevrolet Silverado 2500HD
Your truck has the infamous Passlock anti-theft system. The ignition key has two small black rectangles with a small wire running down the length of the center on either side of the key shaft. When you insert the key into the ignition lock, the wires in the small black rectangles contact a sensor in the lock cylinder. These sensors complete a path to the Electronic Control Module (ECM), which tells the fuel and starter circuits to engage. If the key wires or lock cylinder sensor are damaged or dirty, the signal is not sent to the ECM, your truck will not start, and it may even die while running. The dealers remedy this by selling you a new ignition lock cylinder, and they cut a new key with the proper value to match the old key. This will run you $500 to $600 or more. There are ways to bypass your Passlock system, and several are detailed in Youtube videos. I'd suggest watching a few of them and determine which bypass method works for you. Good luck.
Posted on Oct 11, 2013
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Posted on Jan 02, 2017
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