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’s engine holds 3.3 qt of oil and is rated for 10W‑30 / 5W‑30 API oil. Its Automatic 3‑spd transmission is paired with EPA‑rated fuel economy of 26/30/28 mpg. With only 11 owner complaints recorded, the primary complaint area being the electrical system and no recalls, the model year’s reliability profile reflects a modest volume of complaints but a notable electrical‑system issue.

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the factory engine air filter, fuel filter, front wiper blades and serpentine belt are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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.