GMC Jimmy shifter issue preventing the car from engaging in gear on GMC Jimmy

Some GMC Jimmy owners report experiencing issues with the shifter that prevent the car from engaging in gear, often due to a failing shift interlock mechanism that may cause the shifter to become stuck. Additionally, transmission problems can manifest as slipping gears, delayed engagement, fluid leaks, and unusual noises during shifts, complicating the shifting process. Some owners find that a broken internal shifter latch contributes to their difficulties, although sourcing a replacement part for an older vehicle can be challenging. Another common concern is transmission slipping, particularly between the 3rd and 4th gears, which may be exacerbated by overheating that weakens the clutch pack disks. Furthermore, if the vehicle can only shift into 3rd gear, it may be in "limp mode," a failsafe for electronic issues, as this gear does not require electronic activation. Addressing these issues promptly is crucial for restoring proper functionality to the GMC Jimmy's transmission system.