Chevrolet›Blazer 2WD›1998›Overview/chevrolet/blazer-2wd/1998/base/

1998 Chevrolet Blazer 2WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 Blazer 2WD.

Transmission Automatic 4-spd

1998 Chevrolet Blazer 2WD uses a 4.5‑qt oil capacity with 5W‑30 API lubrication and is paired with an automatic 4‑speed transmission, yielding EPA‑rated fuel economy of 14 city, 20 highway and 16 combined miles per gallon. The model records a single owner complaint focused on vehicle speed control and has no recall actions, indicating a limited reliability issue for this year. Overall, the 1998 Blazer 2WD offers a modestly efficient powertrain within a generally dependable framework.

Model year200520042003200220012000199919981997

Quick specs

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

Engine oil capacity4.5 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque95 ft-lbsOEM · verified
EPA fuel economy14/20/16 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 75 · 525 CCA battery, OE oil filter 19210286. 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.

Battery groupBCI 75 · 525 CCAOEM · verified
Tire size31X10.5R15LTOEM · verified
Wheel / rim7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter19210286
Engine air filter25170512 alt 19259086
Fuel filter25168594
Spark plug12681665
Front wiper blades15757007 alt 15757008
Serpentine belt12550110 alt 12550111
Thermostat12632948 alt 12551507

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length178.3 in
Overall width67.7 in
Overall height65.7 in
Wheelbase100.4 in
Curb weight3629 lb
Track (front / rear)54.7 / 54.7 in

Ratings & economy EPA / vPIC

EPA city / highway / combined14 / 20 / 16 mpg
DrivetrainRear-Wheel Drive
Recommended fuelRegular Gasoline

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 API engine oil. Torque lug nuts to 95 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-6-5-4-3-2.

Lubricants & capacities

Engine Oil5W-30 · API
Engine Oil Capacity4.5 qt
Engine Oil5W-30 · API
Engine Oil Capacity4.5 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts74 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Valve Cover Bolts8.85 ft-lbs

Chassis torques

Leaf Spring to Axle (U-bolts)74.0 ft-lbs
Leaf Spring to Chassis Bracket89.0 ft-lbs
Leaf Spring to Rear Shackle89.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket89.0 ft-lbs
Lug Nuts95 ft-lbs
Transfer Case Fill Plug18.0-30.0 ft-lbs
Transfer Case Drain Plug18.0-30.0 ft-lbs
Front Wheel Hub103 ft-lbs

Ignition

Cylinder Firing Order1-6-5-4-3-2
Spark Plug ManufacturerAC Delco
Spark Plug Gap0.045 in
Spark Plug Torque15 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.75-2.00 lbs
Oil GroupPAG
Oil Type46
Oil Capacity8.00 oz
Standard BCI Group Number75
Standard BCI Cranking Performance525 cca
Optional BCI Group Number75

Service checks

Pressure Test20 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature188-206 °F
Fuel Pump Pressure Minimum66.0 psi
Key ON Engine OFF (KOEO)60-66
RPM50-63 @ Idle rpm
Engine Compression100
Engine Compression100 Minimum psi

Brakes

Brake ApplicationWITH FOUR WHEEL DISC / WITH STANDARD
Torque to Knuckle77 ft-lbs / 52 ft-lbs / 38 ft-lbs
Minimum Pad ThicknessFront: 0.030; Rear: 0.030 specification
Brake ApplicationWITH FOUR WHEEL DISC / WITH STANDARD
Rotor Max Parallel Variation0.0003 in / 0.0005 in
Rotor Runout Limit0.003 in / 0.004 in
Rotor Nominal Thickness From1.14 in / 0.787 in / 1.03 in
Rotor Nominal Thickness To1.14 in / 0.787 in / 1.03 in

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 100,000 mi.

Every 7,500 miAxle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · Brake Pedal Assembly (lubricate return spring) · CV Joint Boot (inspect) · Clutch Pedal Bushing (lubricate) · Clutch Pedal Clevis Pin (lubricate)
Every 30,000 miEngine Air Filter Element (replace) · Fuel Filter (replace) · Wheel Bearing (inspect)
Every 50,000 miTransmission Fluid & Filter (replace)
Every 60,000 miAccessory Drive Belt (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)
Every 100,000 miPCV Valve (inspect) · Spark Plug Wires (inspect) · Spark Plugs (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 1998 Chevrolet Blazer 2WD dominate in one area — the vehicle speed control, 1 of 1 reports (100%), 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 0 a fire — a small share of the total, but worth weighing against the vehicle speed control 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
1
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
1
Owner complaints
0 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 1 complaints on record, top 1 components.

Vehicle Speed Control1

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 1 of 1 bulletins on record with NHTSA.

BulletinDateComponentSummary
9904210041999-08-01Power TrainSOME PICKUPS AND FULL-SIZE UTILITY MODELS WITH AN AUTOMATIC TRANSFER CASE MAY EXHIBIT A…

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.

Group 75 batteryVehicles taking 4.5 qtEngine oil filter 19210286Engine air filter 25170512Fuel filter 25168594Spark plug 12681665

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 1998 Blazer 2WD take?

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

Does the 1998 Blazer 2WD have open recalls?

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

What gas mileage does the Blazer 2WD get?

EPA figures are 14 city / 20 highway / 16 combined mpg.