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Use an OBD-II scanner to check for "pending" or "stored" codes in the Transmission Control Module (TCM). No codes present. Solenoid Codes: Often a repairable electrical issue.
Inspect the transmission pan and housing for external issues.
Check for "weeping" or active drips. If you see excessive RTV (silicone sealant) bulging out from the pan, it may have been applied too thickly, which can lead to internal clogs or external leaks. ratemytranny
The quickest way to rate a transmission's health is by checking the fluid condition.
Poor. The fluid is oxidized. If it smells "burnt," there is likely internal friction material damage. Use an OBD-II scanner to check for "pending"
Shifts should be firm but smooth. "Slipping" (engine RPMs rise but the car doesn't speed up) or "hunting" for gears indicates a failing unit.
When shifting from Park to Drive or Reverse, the engagement should be near-instant (less than 1.5 seconds). Long delays suggest low pressure or worn seals. Inspect the transmission pan and housing for external issues
Usually indicates internal mechanical slipping (low rating). Summary Rating Scale Description Action Required 5/5 (Perfect) Bright red fluid, instant engagement, no leaks. None; maintain regular service. 3/5 (Fair) Brownish fluid, minor weeping, high mileage. Drain and fill fluid; replace filter. 1/5 (Failing) Burnt smell, slipping gears, active clunking. Immediate rebuild or replacement.