GeoSpectrum1989Overview/geo/spectrum/1989/base/

1989 Geo Spectrum

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1989 Spectrum.

Transmission Automatic 3-spd

The 1989 Geo Spectrum features a 3.3‑quart oil capacity and recommended 10W‑30/5W‑30 API viscosity, paired with an automatic three‑speed transmission that delivers EPA‑rated fuel economy of 26 mpg city, 30 mpg highway and 28 mpg combined. Its modest complaint tally of 11 owner reports, all centered on the electrical system, and the absence of any recalls indicate limited reliability concerns for that year. This model year therefore reflects a relatively low‑impact reliability profile within the Spectrum series.

Quick specs

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

Engine oil capacity3.3 qtOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified
EPA fuel economy26/30/28 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 25161877. Note the factory engine air filter, fuel filter, front wiper blades and serpentine belt are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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 filter25161877 alt 25322840
Engine air filter25096917 discontinued · alt 12337454
Fuel filter25055280 discontinued · alt 25176308
Spark plug19354423 alt 19250976
Front wiper blades94144209 discontinued
Serpentine belt94139067 discontinued · alt 94124559
Thermostat94336069 alt 94457048

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 3-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined26 / 30 / 28 mpg
DrivetrainFront-Wheel Drive
Passenger volume84 cu ft
Cargo volume11 cu ft
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 3.3 qt of 10W-30 / 5W-30 API engine oil, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantETHYLENE GLYCOL
Engine OilAPI · 10W-30 · 5W-30
Engine Oil Capacity3.3 qt
Power Steering FluidUSE GM PART NO. 1052884 OR EQUIVALENT

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; coolant every 30,000 mi. The big-interval services (every 30,000 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 7,500 miEngine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 7,500 miBody Latches, Locks & Hinges (inspect) · Clutch Release Lever Pivot Points (lubricate) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Steering System (inspect) · Suspension System (inspect)
Every 15,000 miBrake System (inspect) · Engine Oil Filter (replace) · Engine Valves (inspect valve lash) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)
Every 22,500 miPower Steering System (drain & refill)
Every 30,000 miAccessory Drive Belt (inspect) · Choke System (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Oxygen Sensor (inspect) · PCV System (inspect)
Every 45,000 miPower Steering Line (replace)
Every 60,000 miTiming Belt (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 1989 Geo Spectrum lead in one area — the electrical system, 3 of 11 reports (27%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 0 of the reports describe a crash and 3 a fire — a small share of the total, but worth weighing against the electrical system 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.

0
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
11
Owner complaints
0 involved a crash · 3 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★

Owner complaints filed with NHTSA, by component

All 11 complaints on record, top 8 components.

Electrical System3
Structure2
Seats1
Fuel System, Gasoline1
Power Train1
Latches/Locks/Linkages1
Seat Belts1
Engine & Engine Cooling1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

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 Spectrum. 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 1989 Spectrum take?

3.3 qt of ABOVE 40 degrees F 30W API, ABOVE 0 degrees F 10W-30 API, ALL TEMPERATURES 5W-30 API, per the factory manual.

Does the 1989 Spectrum have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Spectrum get?

EPA figures are 26 city / 30 highway / 28 combined mpg.