Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 K2500.
The 1984 GMC Truck K2500 is a heavy‑duty model in the K‑series truck lineup, requiring a 5‑quart oil change and compatible with viscosities such as 20W‑20, 15W‑40, and 5W‑30. Its early‑model year precedes the complaint data recorded from 1990 through 1996, a period in which complaints peaked at 25 in 1996 and were minimal at just one in 1992. Consequently, the 1984 K2500 stands as an early‑generation example whose reliability occurs before the later fluctuations observed in the model line.
Fluid capacities, tune-up values and fuel economy at a glance.
Capacities, torques and tune-up values from the factory service manual.
This engine holds 5 qt of 20W-20 / 15W-40 / 5W-30 engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.
| Brake Fluid | DOT 3 |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 4.2 qt |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 27.0 qt |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 20W-20 · 15W-40 · 5W-30 |
| Engine Oil Capacity | 5 qt |
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.
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. THE AFFECTED FILTERS… Remedy: HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 2007. OWNERS CAN CONTACT FRAM CUSTOMER SERVICE TOLL-FREE AT 1-800-890-2075.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
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Cross-vehicle references for the kinds of data on this page.
5 qt of ABOVE 40 degrees F: 30, ABOVE 20 degrees F: 20W-20, ABOVE 10 degrees F: 15W-40, BELOW 60 degrees F: 5W-30, per the factory manual.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.