Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Suburban 2WD.
The 1984 GMC Truck Suburban 2WD carries a 5-quart oil capacity with approved viscosities spanning 20W-20, 15W-40, and 5W-30, reflecting the era's lubrication flexibility. Owner-reported data for this model year shows just five total complaints — topped by tire concerns — and zero recalls, marking a notably quiet entry in the nameplate's recorded history. While the broader complaint database covers 1990 through 2004 and swings from a peak of 480 reports in 1994 down to a single complaint in 2004, the 1984 Suburban's minimal footprint suggests an early-generation durability that predates the later model years' documented volatility.
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 |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 5.5 qt |
| Engine Coolant | ETHYLENE GLYCOL |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1984 GMC Truck Suburban 2WD dominate in one area — the tires, 3 of 5 reports (60%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 2 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the tires pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 5 complaints on record, top 3 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
Showing 1 of 1 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| 376602A | 1995-01-01 | Engine And Engine Cooling | NEW CAST IRON EXHAUST MANIFOLD AND STAINLESS STEEL GASKET TO CORRECT ENGINE NOISE… |
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 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.