ChevroletSuburban 4WD1998Overview/chevrolet/suburban-4wd/1998/base/

1998 Chevrolet Suburban 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 Suburban 4WD.

Transmission Automatic 3-spd

The 1998 Chevrolet Suburban 4WD takes 5.5 qt of 5W-30 engine oil and is EPA-rated at 20/23/21 mpg city/highway/combined.

Model year20082003200219981991

Quick specs

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

Engine oil capacity5.5 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque140 ft-lbsOEM · verified
EPA fuel economy20/23/21 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 78 · 600 CCA battery, OE oil filter 25160561. 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 78 · 600 CCAOEM · verified
Tire sizeLT245-75R16EOEM · verified
Wheel / rim6.5-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter25160561
Engine air filter25168082 alt 25168081
Fuel filter10154635 alt 25171792
Spark plug12681665
Front wiper blades93441742
Serpentine belt12576454 alt 12564763
Thermostat12559336 alt 12632948

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 3-spd

Dimensions & weight NHTSA vPIC

Overall length219.7 in
Overall width76.8 in
Overall height71.3 in
Wheelbase131.5 in
Curb weight5031 lb
Track (front / rear)62.6 / 63.8 in

Ratings & economy EPA / vPIC

EPA city / highway / combined20 / 23 / 21 mpg
Drivetrain4-Wheel or All-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 5.5 qt of 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 140 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-8-4-3-6-5-7-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity5.5 qt
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity8.5 qt
Engine Oil5W-30 · API
Engine Oil Capacity5.5 qt
Engine Oil5W-30 · API

Engine torques

Crankshaft Pulley and/or Damper Bolts74 ft-lbs
Crankshaft Pulley and/or Damper Bolts110 ft-lbs
Exhaust Manifold to Cylinder Head Bolts40 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Valve Cover Bolts8.85 ft-lbs
Engine Valve Cover Bolts20.0 ft-lbs
Engine Valve Cover Bolts6.0 ft-lbs
Engine Valve Cover Bolts9.0 ft-lbs

Chassis torques

Leaf Spring to Chassis Bracket70.0 ft-lbs
Leaf Spring to Rear Shackle70.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket70.0 ft-lbs
Lug Nuts140 ft-lbs
Front Wheel Hub165 ft-lbs

Ignition

Cylinder Firing Order1-8-4-3-6-5-7-2
Spark Plug ManufacturerAC Delco
Spark Plug Gap0.060 in
Spark Plug Torque14 ft-lbs
Spark Plug ManufacturerAC Delco
Spark Plug Gap0.060 in
Spark Plug Torque11-15 ft-lbs

Battery & A/C

RefrigerantR134a
Oil GroupPAG
Oil Type46
Standard BCI Group Number78
Standard BCI Cranking Performance600 cca
Standard BCI Group Number78
Standard BCI Cranking Performance600 cca
Standard BCI Group Number78

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
Injector Primary Resistance11.8-12.6 @ 50-95 degreesF MFI ohms
Engine Compression100

Brakes

Torque Caliper to Bracket15 ft-lbs
Torque to Knuckle38 ft-lbs
Minimum Pad ThicknessFront: 0.030; Rear: 0.030 specification
Drum Runout Limit0.006 in
Drum Nominal Diameter10 in / 11.15 in / 13 in
Drum Maximum Machining10.05 in / 11.21 in / 13.06 in
Drum Discard at-or-over10.09 / 11.24 / 13.09
Rotor Max Parallel Variation0.001 in / 0.0005 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 4 stages
120 ft. lbs.20 ft. lbs
255 ft. lbs.55 ft. lbs
355 ft. lbs.55 ft. lbs
490 degrees90 degrees
Intake Manifold to Engine Bolts — tightening sequence 1 stages
122 ft. lbs., step 2: 3022 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 100,000 mi.

At 3,000 miDrive Axle Assembly (drain & refill)
Every 5,000 miSteering System (inspect)
Every 7,500 miCV Joint Boot (inspect) · Differential (inspect fluid level) · Driveshaft Slip Yoke (lubricate) · Driveshaft U-Joint (lubricate) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 10,000 miAir Intake System (inspect)
Every 12,000 miUnderbody Splash Shield (inspect)
Every 15,000 miCabin Air Filter (replace)
Every 30,000 miClutch Cross Shaft (lubricate) · Clutch Release Lever Pivot Points (lubricate) · Engine Air Filter Element (replace) · Fuel Filter (replace) · Wheel Bearing (inspect)
Every 60,000 miAccessory Drive Belt (inspect) · Crankcase Depression Regulator Valve (inspect) · EGR System (inspect) · Exhaust Pressure Regulator (inspect) · Fuel Evaporative Emission Control System (inspect) · Fuel Line (inspect)
Every 100,000 miPCV Valve (inspect) · Spark Plug Wires (inspect) · Spark Plugs (replace) · Transmission Fluid & Filter (replace)

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

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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 1998 Suburban 4WD take?

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

What gas mileage does the Suburban 4WD get?

EPA figures are 20 city / 23 highway / 21 combined mpg.