Rick's Free Auto Repair Advice

Key won’t turn Silverado

My key won’t turn in my Silverado

If the key won’t turn in your Silverado or other GM truck, this may be your fix. 2003-04 Chevy trucks have a problem with a binding lock cylinder, ignition switch, or the park lock cable. The best way to isolate the problem is to remove the shroud from the steering column and then remove the lock cylinder and the park lock cable. Then stick a screwdriver into the lock cylinder bore to engage it with the linkage to the ignition switch. Turn the screwdriver to see if the movement is smooth. If it is, that eliminates the ignition switch.

Next, reinstall the park lock cable and repeat the test. If it now binds, replace the park lock cable. If both of those components check out, the problem is in the lock cylinder. Before replacing, try applying anti-seize compound inside the bore. If that doesn’t work, you’ll have to replace the cylinder.


© 2012 Rick Muscoplat

Posted on by Rick Muscoplat

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