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1985 Chevrolet Blazer 2WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1985 Blazer 2WD.

The 1985 Chevrolet Blazer 2WD is built on the classic full‑size SUV platform and, like its contemporaries, utilizes a 3‑quart oil capacity with recommended viscosities ranging from 20W‑20 to 5W‑30. In the field, owners reported a modest 32 total complaints for this year, with steering issues emerging as the most frequent problem and two recalls documented for the model. When positioned against the broader Blazer complaint record—spanning 1990 to 2026 and peaking at 1,418 issues in 1995—the 1985 edition sits on the low‑end of the reliability spectrum, indicating a comparatively steady early‑generation design.

Model year19911985

Quick specs

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

Engine oil capacity3 qtOEM · verified
Engine oil type20W-20 / 15W-40 / 5W-30OEM · 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 Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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
Engine air filter08996118 alt 08997890
Fuel filter5651803 discontinued · alt 25011765
Spark plug19300382
Front wiper blades15184702
Serpentine belt09433740 alt 09433722
Thermostat03043321 alt 14077122

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length184.6 in
Overall width79.5 in
Overall height74 in
Wheelbase106.7 in

Service quick specs OEM factory data

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

This engine holds 3 qt of 20W-20 / 15W-40 / 5W-30 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 Capacity4.0 qt
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity4.6 qt
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-20 · 15W-40 · 5W-30
Engine Oil Capacity3 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 miExhaust Pressure Regulator (inspect)
Every 5,000 miBrake System (inspect) · Engine Oil Filter (replace) · Throttle Linkage (inspect)
At 7,500 miChoke System (inspect) · Distributor Vacuum Advance (inspect) · Drive Axle Assembly (drain & refill) · Early Fuel Evaporation System (inspect) · Engine Oil Filter (replace) · Throttle Body (torque)
Every 7,500 miBody Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Driveshaft U-Joint (lubricate)
Every 10,000 miAir Intake System (inspect) · Radiator Fan Assembly (inspect) · Underbody Splash Shield (inspect)
Every 15,000 miEngine Oil Filter (replace) · Exhaust Pressure Regulator (inspect) · PCV System (inspect) · PCV Valve (inspect) · Tire & Wheel Assembly (rotate)
At 30,000 miEarly Fuel Evaporation System (inspect)
Every 30,000 miAccessory Drive Belt (inspect) · Choke System (inspect) · Clutch Cross Shaft (lubricate) · Distributor Assembly (inspect) · Distributor Vacuum Advance (inspect) · EGR System (inspect)
At 45,000 miDistributor Vacuum Advance (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 1985 Chevrolet Blazer 2WD lead in one area — the steering, 6 of 32 reports (19%), well ahead of the next concern. None of this vehicle's 2 recall campaigns target the steering, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 6 of the reports describe a crash and 4 a fire — a small share of the total, but worth weighing against the steering 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.

2
Open recalls
NHTSA campaigns
3
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
32
Owner complaints
6 involved a crash · 4 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent
’90’91’92’93’94’95’96’97’98’99’00’01’02’03’04’05’06’07’08’19’20’21’22’23’24’25’26

Owner complaints filed with NHTSA, by component

All 32 complaints on record, top 8 components.

Steering6
Engine & Engine Cooling5
Power Train4
Service Brakes, Hydraulic4
Seat Belts3
Structure2
Tires2
Seats2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

06E026000Exterior LightingReported 23/03/2006

CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL… Remedy: PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 2006. OWNERS MAY CONTACT PRO-A MOTORS AT 323-838-2988.

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.

Technical service bulletins NHTSA · verified

Showing 3 of 3 bulletins on record with NHTSA.

BulletinDateComponentSummary
GM5612041995-04-01StructureWATER LEAK AT THE A/C RECIRCULATION DOOR (INSTALL NEW HOOD HINGE SEAL). *TW
GM1615141995-04-01Latches/Locks/LinkagesEND GATE LATCH RATTLE (INSTALL REVISED STRIKER). *TW
9310A3431993-02-01VisibilityFRONT DOOR SIDE GLASS BINDING/TRACK DISENGAGEMENT. *TW

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 Blazer 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 3 qtEngine oil filter 25160561Engine air filter 08996118Fuel filter 5651803Spark plug 19300382

Reference guides

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

Vehicle recalls & TSBsOBD-II trouble codesMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 1985 Blazer 2WD take?

3 qt of ABOVE 40 degrees F: 30, ABOVE 20 degrees F: 20W-20, ABOVE 10 degrees F: 15W-40, BELOW 60 degrees F: 5W-30, per the factory manual.

Does the 1985 Blazer 2WD have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.