GMC TruckG-Series Van1994Overview/gmc-truck/g-series-van/1994/base/

1994 GMC Truck G-Series Van

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1994 G-Series Van.

The 1994 GMC Truck G-Series Van takes 4.5 qt of 5W-30 engine oil.

Model year1996199419931991

Quick specs

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

Engine oil capacity4.5 qtOEM · verified
Engine oil type5W-30 / 10W-30 APIOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses OE oil filter 25160561. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

OE service part numbers OEM · verified

Engine oil filter25160561 alt 12737090
Engine air filter06419892
Fuel filter25171792 discontinued
Spark plug19302741
Front wiper blades15184702
Serpentine belt88986825 alt 12576753
Thermostat10190925 alt 12551507

Service quick specs OEM factory data

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

This engine holds 4.5 qt of 5W-30 / 10W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity14.0 qt
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity4.9 qt
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API · 10W-30
Engine Oil Capacity4.5 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; coolant every 24,000 mi. The big-interval services (every 24,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 5,000 miDrive Axle Assembly (drain & refill) · Tire & Wheel Assembly (rotate) · Universal Vehicle Operation (inspect idle speed)
Every 5,000 miBrake Hydraulic System (inspect fluid level) · Brake System (inspect) · Driveshaft U-Joint (lubricate) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Power Steering System (inspect)
At 6,000 miDrive Axle Assembly (drain & refill) · Engine Oil Filter (replace)
Every 6,000 miBody Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Parking Brake Cable (lubricate)
Every 7,500 miExhaust System (Complete) (inspect)
Every 10,000 miRadiator Fan Assembly (inspect) · Tire & Wheel Assembly (rotate)
Every 12,000 miAir Cleaner Manifold Heat Control Actuator (inspect) · Engine Oil Filter (replace) · Underbody Splash Shield (inspect)
Every 15,000 miEngine Air Filter Element (replace)
Every 24,000 miAir Intake System (inspect) · Drive Axle Assembly (drain & refill) · Engine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System (inspect) · Ignition Timing (inspect) · Thermostatically Controlled Air Cleaner Assembly (inspect)

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

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VIN
Decode a VIN to confirm the transmission and build data for a specific G-Series Van. OEM
Build data
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Recalls
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Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1994 G-Series Van take?

4.5 qt of LIGHT DUTY MODELS: 5W-30 API, HEAVY DUTY MODELS: 10W-30 API, per the factory manual.