when changing an ignition cylinder, (i have a 2015 1500 GMC but not specific to this model) I'm sure its the same for a lot of model years.... anyway, normally you'd have to turn the key on 1 notch to unlock the cylinder right... but i cant turn my key anymore, what's the best way to get out the old ignition cylinder?

 

Please post in the pickup section, like you were reminded before. Thanks.