Chevrolet›S10 2WD›1991›Overview/chevrolet/s10-2wd/1991/base/

1991 Chevrolet S10 2WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 S10 2WD.

Body TRUCKTransmission Automatic 4-spd

The 1991 Chevrolet S10 2WD is a TRUCK that uses a 4‑quart oil capacity with a 5W‑30 API rating and is paired with an Automatic 4‑spd transmission, delivering EPA‑rated fuel economy of 15 city, 20 highway, and 17 combined miles per gallon. Owner complaint records show a total of 233 complaints, with the predominant issue involving Service Brakes, Hydraulic, and ten recall campaigns documented for this model year. These figures place the 1991 S10 2WD at a reliability juncture where brake‑related service problems and multiple recalls are part of its historical profile.

Model year2004 2003 2002 2001 2000 1999 1998 1997 1991

Quick specs

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

Engine oil capacity4 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

EPA fuel economy15/20/17 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 12737090. 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 filter	12737090 alt 12731175
Engine air filter	25040929 alt 25040881
Fuel filter	25055083 alt 25171792
Spark plug	05614168 alt 19302741
Front wiper blades	15757007 alt 12363297
Serpentine belt	10112457 alt 19244944
Thermostat	10190925 alt 24577299

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined	15 / 20 / 17 mpg
Drivetrain	Rear-Wheel Drive
Recommended fuel	Regular Gasoline

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	4.5 qt
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	10.0 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.

At 7,500 mi	Drive Axle Assembly (drain & refill) · Throttle Body (torque) · Tire & Wheel Assembly (rotate)
Every 7,500 mi	Body Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Driveshaft U-Joint (lubricate) · Engine Coolant System (leak inspection)
Every 15,000 mi	Tire & Wheel Assembly (rotate)
Every 30,000 mi	Clutch Cross Shaft (lubricate) · Clutch Release Lever Pivot Points (lubricate) · EGR System (inspect) · Early Fuel Evaporation System (inspect) · Engine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 60,000 mi	Accessory Drive Belt (inspect) · Fuel Filter (replace) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Ignition Timing (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.

Owner complaints about the 1991 Chevrolet S10 2WD dominate in one area — the service brakes, hydraulic, 75 of 233 reports (32%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 19 of the reports describe a crash and 11 a fire — a small share of the total, but worth weighing against the service brakes, hydraulic 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

233

Owner complaints

19 involved a crash · 11 a fire

Owner complaints filed with NHTSA, by component

All 233 complaints on record, top 8 components.

Service Brakes, Hydraulic75

Engine & Engine Cooling24

Seat Belts20

Electrical System17

Structure15

Tires11

Power Train11

Fuel System, Gasoline9

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.

Technical service bulletins NHTSA · verified

Showing 5 of 10 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
130089009	2013-09-01	Engine And Engine Cooling	Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
020730024A	2005-08-01	Power Train	DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY…
990730016A	2002-10-01	Power Train	DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR…
000601019	2000-10-01	Engine And Engine Cooling	SOME OWNERS MAY COMMENT ON HIGH OIL CONSUMPTION AFTER A GM GOODWRENCH REMANUFACTURED 4.3L…
990940004	2000-01-01	Seats	GENERAL MOTORS BEGAN PROVIDING CHILD RESTRAIN SEAT TOP TETHER HARDWARE PACKAGES TO…

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 S10 2WD. 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.

Vehicles taking 4 qt Engine oil filter 12737090 Engine air filter 25040929 Fuel filter 25055083 Spark plug 05614168

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 1991 S10 2WD take?

4 qt of 5W-30 API, per the factory manual.

Does the 1991 S10 2WD have open recalls?

NHTSA lists 10 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the S10 2WD get?

EPA figures are 15 city / 20 highway / 17 combined mpg.