问：更换点火开关，现在汽车将无法启动。

雪佛兰具有使用电阻芯片点火钥匙系统的一种称为（桶）车辆抗盗窃系统。VATS has a separate module that is called a TDM or theft deterrent module which sends a signal to the ECM (Car’s computer) informing it that there either is or is not a valid key present which will then either allow it to start or not allow it to; depending on whether the key is valid. I would recommend taking it to the Chevy Dealer to have it re-flashed.