GMC Safari transmission issue with failure to engage third and fourth gears on GMC Safari

Some GMC Safari owners report experiencing transmission issues, specifically a failure to engage third and fourth gears, which can manifest as delays in shifting and gear slippage. These symptoms may indicate underlying problems, such as low transmission fluid levels that lead to decreased pressure and slower gear engagement. Additionally, mechanical failures, including worn components or solenoid issues, have been reported as potential causes of difficulties in engaging specific gears. Owners with a maintenance history that includes transmission servicing may have insights into the overall health of their transmission system. To diagnose these issues, some owners suggest using a bidirectional scanner to monitor transmission behavior and ensuring that the fluid level is correct for optimal function. Regular maintenance and timely repairs are essential for effectively addressing these transmission concerns and preventing further damage.