RAM HD diesel pickups span manual and automatic eras and different engine-output or application contexts. The 6.7L Cummins badge does not identify the transmission by itself.
Identify the complete powertrain
Confirm the model year, RAM 2500 or 3500 application, engine output context and actual transmission. Pickup and chassis-cab information should not be merged without verification.
Questions for the records
Look for documented fluid and filter service, repairs, control-module work, clutch work where relevant and evidence of towing or commercial operation. Ask whether the truck has been tuned or had powertrain hardware changed.
Evaluate use, not rankings
Avoid claims that one transmission always succeeds or fails at a particular kilometre reading. Condition, calibration, load history, maintenance and the complete truck determine the inspection priorities.
General educational content for Canadian diesel-pickup research. Verify the exact truck, model year, certification labels, owner manual and manufacturer documentation, and obtain qualified mechanical or towing advice where appropriate.
Sources & Further Verification
Use the exact model year, VIN, truck labels and current manufacturer documentation when moving from general research to a purchase or towing decision.