GMC Truck›K2500›1990›Overview/gmc-truck/k2500/1990/base/

1990 GMC Truck K2500

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 K2500.

The 1990 GMC K2500 is a full‑size truck built on the K‑series platform and powered by a gasoline engine that relies on a 4‑quart oil capacity and the 5W‑30 API‑specified viscosity for its lubrication needs. While the model’s overall reliability record shows only two owner complaints overall, the most frequent issue cited concerns the seat‑belt system, and the vehicle was subject to four recalls during its production run. Positioned at the start of the 1990‑1996 complaint window, the 1990 K2500 registers among the lowest annual grievance counts—well below the peak of 25 complaints recorded in 1996—indicating a comparatively solid reliability foundation for researchers examining this generation.

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4 qt of 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake Fluid	DOT 3
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	14.0 qt
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	14.0 qt
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	5W-30 · API
Engine Oil Capacity	4 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi.

At 5,000 mi	Drive Axle Assembly (drain & refill) · Universal Vehicle Operation (inspect idle speed)
Every 5,000 mi	Brake Hydraulic System (inspect fluid level) · Brake System (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
At 6,000 mi	Tire & Wheel Assembly (rotate)
Every 6,000 mi	Radiator Fan Assembly (inspect) · Steering Linkage (lubricate) · Weatherstrip Seal (inspect)
At 7,500 mi	Drive Axle Assembly (drain & refill) · Engine Oil Filter (replace)
Every 7,500 mi	Accessory Drive Belt (inspect) · Body Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · Exhaust System (Complete) (inspect) · Parking Brake Cable (lubricate)
Every 10,000 mi	Air Intake System (inspect)
Every 12,000 mi	Air Cleaner Manifold Heat Control Actuator (inspect) · Tire & Wheel Assembly (rotate) · Underbody Splash Shield (inspect)
Every 15,000 mi	EGR System (inspect) · Engine Oil Filter (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 1990 GMC Truck K2500 dominate in one area — the seat belts, 1 of 2 reports (50%), well ahead of the next concern. None of this vehicle's 4 recall campaigns target the seat belts, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 1 a fire — a small share of the total, but worth weighing against the seat belts 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.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

0 involved a crash · 1 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’90’91 ’92 ’93 ’94 ’95 ’96

Owner complaints filed with NHTSA, by component

All 2 complaints on record, top 2 components.

Seat Belts1

Power Train1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

06E043000Fuel System, GasolineReported 19/05/2006

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18… Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION…

07E088000EquipmentReported 24/10/2007

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.