Mon – Fri 7:30am – 5:00pm. Closed Saturday & Sunday. 2001 Dodge Ram 2500 Engine Computer 5.9l Cummins Diesel Manual Production Date 2/13/2001 Oem 3947412. This listing may use ARA damage codes, including the following. A = 1 or less units of damage B = 2 or less units of damage but more than 1 C = more than 2 units of damage. A = Less than or equal to 60k miles, or greater than 60k miles but less than or equal to 200k miles and less than or equal to 15k miles per year B = Greater than 60k miles and less than or equal to 200k miles but greater than 15k miles per year C = Greater than 200k miles. AFT = New Aftermarket body part Downgrade = Recycler choose to downgrade the part based on damage not reflected in the grading algorithm.