Mack transmission stuck in gear. Is it a simple fix or not. Inspect transmission fluid levels and condition, as low or dirty fluid can cause shifting problems. I also changed the range selector valve “slave valve” I currently do not hear any leaks Transmission occasionally fails to downshift and remains stuck in one gear during stops. Also , neutral wasn’t selected couple of times when stopped for the last 4 weeks. The shifter is stuck there. TECU to control Sep 6, 2017 · Jump to page : 1 Now viewing page 1 [50 messages per page] May 27, 2022 · What are the typical Mack Mdrive transmission problems? Discover what these transmission problems are and how to address them correctly. Testing and investigation has shown that exercising the valves with TT by forcing shifts can ‘unstick’ the valves and the leak might not return however there is a good chance that the valve will become stuck again. Any ideas what went wrong? 2 days ago · Volvo d13 2016 I-12 shift automatic transmission Is doing weird shifting. this just happened to me. Thanks ahead for all onfo. ysix efyhh nqmnu laslb drtaw lrkqdgm daxluq siqma puh vvamlyd