Wont shift out of first gear

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. So sorry to hear you're having trouble with your vehicle. If your Magnum suddenly doesn't shift out of first gear, it could be related to several issues. The transmission might be in "limp mode," a safety feature that restricts it to first gear when a problem is detected. This can be caused by a problem detected in the engine or transmission systems and acts as a safety measure to prevent further damage. Since you've already checked the fuse and reset the computer, it might be time to have some diagnostic tests performed at a trusted shop. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!