Commonly used Dodge transmission codes include code 1740 and 1736 for Ram Van 3500. The harsh shifting transmissions require a PCM software upgrade, as stated by RepairPal.
The transmission used in Dodge vehicles is equipped with either a 5.9L or 6.7L Cummins diesel engine. Being clear concerning the engine to transmission combination goes a long way in knowing the inherent problems of each. From 1998 to mid-2003, trucks using the 24-valve 5.9L diesel with both a powertrain control module (PCM) and engine control module (ECM) have a four-speed rear wheel drive transmission called the 47RE.
In 2003, this package received some significant changes, causing the transmission designation to be changed to 48RE to reflect its change. This arrangement remained in place until 2007. The 2007 full-chassis truck is equipped with a six-speed RWD transmission called the 68RFE. If it had an incomplete frame, an Aisin Seiki six-speed RWD transmission was used and called AS68RC, according to SearchAutoParts.com.
Moreover, When the ECM is mounted on the lower left side of the engine, all of the rattling from the engine causes issues with the connection between the harness connector and module pins. Hoisting it up on the rack allows easy access to the connector.