Does the shifter ever go bad?

Yes, a shifter can go bad over time due to wear and tear, internal damage, or issues with the cables and linkage. Symptoms of a failing shifter include difficulty in changing gears, unexpected gear shifts, or a shifter that feels loose or unresponsive. Regular maintenance and addressing any issues promptly can help extend the life of the shifter. If problems persist, it's advisable to consult a mechanic for a thorough diagnosis.