ChevroletG201990Overview/chevrolet/g20/1990/base/

1990 Chevrolet G20

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 G20.

Defined by a 4.5-quart oil capacity requiring 5W-30 or 10W-30 API viscosity, the 1990 Chevrolet G20 carries 17 total owner complaints and three recalls. The engine and engine cooling system emerged as the top complaint area for this specific model year. Contextualized within the 1990-1999 model complaint history, this figure sits well below the 1995 high of 87 complaints, suggesting a more reliable standing before the series reached its lowest complaint count in 1998.

Model year199019821981198019791978197719761975

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

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length178.3 in
Overall width79.5 in
Overall height81.9 in
Wheelbase109.8 in
Curb weight3803 lb

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 Capacity4.9 qt
Engine CoolantETHYLENE GLYCOL
Engine Oil5W-30 · API · 10W-30
Engine Oil Capacity4.5 qt
Engine Oil5W-30 · API · 10W-30
Engine Oil Capacity5 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 miDrive Axle Assembly (drain & refill) · Universal Vehicle Operation (inspect idle speed)
Every 5,000 miBrake Hydraulic System (inspect fluid level) · Brake System (inspect) · Engine Oil (drain & refill) · Parking Brake Cable (lubricate) · Power Steering System (inspect)
Every 6,000 miDifferential (inspect fluid level) · Shift Linkage (inspect) · Steering Linkage (lubricate) · Suspension System (lubricate) · Throttle Linkage (inspect)
At 7,500 miDrive Axle Assembly (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 7,500 miBody Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Engine Coolant System (leak inspection) · Exhaust System (Complete) (inspect)
Every 10,000 miAir Intake System (inspect) · Radiator Fan Assembly (inspect) · Underbody Splash Shield (inspect)
Every 12,000 miAccessory Drive Belt (inspect) · Air Cleaner Manifold Heat Control Actuator (inspect)
Every 15,000 miEngine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 24,000 miDrive Axle Assembly (drain & refill) · Fuel Evaporative Emission Control System (inspect) · Fuel Filter (replace) · Wheel Bearing (inspect)

Reliability & federal safety record

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

The 1990 Chevrolet G20 presents a relatively stable federal record within its generation, with 17 complaints and 3 recalls—figures that are modest compared to the sharp spike in complaints (48) and recalls (7) seen in 1994, or the peak of 87 complaints in 1995. The trend suggests that 1990 falls early in the generation’s lifecycle, before the mid-1990s surge in reported issues, though its complaint volume is higher than the immediate successor year, 1991 (5 complaints, 4 recalls). Engine and brake complaints dominate the 1990 data, alongside two fire-related reports, though the root causes are unspecified. The absence of investigations or technical service bulletins (TSBs) for 1990 implies that while issues existed, they were not systemic enough to trigger formal scrutiny. Compared to later years, 1990’s record is neither the cleanest nor the most troubled, but its lower complaint volume relative to the mid-1990s peak makes it a more predictable choice for a used purchase. **Takeaway: The 1990 G20 is a reasonable year to buy, provided pre-purchase inspection focuses on engine cooling, brakes, and electrical systems to mitigate its most common reported issues.**

3
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
17
Owner complaints
0 involved a crash · 2 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 17 complaints on record, top 8 components.

Engine & Engine Cooling3
Service Brakes, Hydraulic3
Suspension2
Structure2
Seat Belts2
Latches/Locks/Linkages2
Seats,Unknown Or Other1
Steering1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 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.

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

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific G20. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

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 1990 G20 take?

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

Does the 1990 G20 have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.