Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 D400.
The 1978 Dodge D400 overview establishes the vehicle's core identity through its designated body, platform, and engine configurations, framing the model for researchers seeking precise technical data. By focusing on the standout specifications inherent to the D400, this reference provides a concrete understanding of the truck's mechanical layout without relying on embellished performance claims. Ultimately, situating this 1978 model year within the D400's broader reliability history clarifies exactly what this specific iteration means for the vehicle's long-term durability and operational legacy.
Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.
| Tool required | DRBIII scan tool (dealer / locksmith) |
| Why | Transmitter codes are written into the receiver in the passenger door module |
| When needed | After Sentry Key Immobilizer Module (SKIM) replacement |
| Tool required | DRBIII scan tool |
| Also required | The vehicle's four-digit PIN code |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 1 of 1 campaigns on record for this vehicle.
AN INTERMEDIATE STEERING SHAFT CONTAINING A MISMATCHED POT COUPLING ASSEMBLY MAY HAVE BEEN INSTALLED ON THE INVOLVED VEHICLES. THIS COUPLING MAY HAVE AN OVERSIZED SERRATION DIAMETER. AN OVERSIZED SERRATION COULD PREVENT… Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, INSTALL A REPLACEMENT SHAFT COUPLING.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.