For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Inspect the shift rails. Are the rails damaged, worn or missing parts? | Go to Step 2 | Go to Step 3
2 | Repair or replace the shift rails or any missing parts. Does the transmission still slip out of gear? | Go to Step 3 | System OK
3 | Disassemble the transaxle and repair as necessary. Refer to Transmission Case Disassemble in the M86/M94 Section of the Transmission Unit Repair Manual. Does the transmission still slip out of gear? | Go to Transmission Replacement | System OK