GMC TruckYukon 2WD1998Overview/gmc-truck/yukon-2wd/1998/base/

1998 GMC Truck Yukon 2WD

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

The 1998 GMC Yukon 2WD carries a 5.5-quart engine oil capacity filled with 5W-30 API viscosity lubricant, specifications that define the maintenance baseline for this two-wheel-drive variant within the model’s 1992–2026 production span. Falling between the line’s 1993 low-complaint baseline of 17 reported issues and the 2007 peak of 776 complaints, this model year sits in the earlier segment of the timeline before the dramatic escalation in documented problems. That chronological position places the 1998 variant closer to the period of minimal complaints than to the later surge, indicating it represents a more stable point in the model’s reliability history.

Model year2013200219991998

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

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 sizeTAHOE, YUKON POLICE P235-70R15;TAHOE, YUKON 2WD-P235-75R15;TAHOE, YUKON 4WD P245-75R16OEM · verified
Wheel / rim7-JJ, 7-JJ, 6.5, 7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter25160561 alt 19210286
Engine air filter25168081 alt 25168082
Fuel filter25314890 alt 25171792
Spark plug12681665
Front wiper blades93441742
Serpentine belt12576454 alt 19355374
Thermostat12632948 alt 12551507

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. Torque lug nuts to 140 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

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

Engine torques

Crankshaft Pulley and/or Damper Bolts74 ft-lbs
Engine Valve Cover Bolts9.0 ft-lbs

Chassis torques

Leaf Spring to Axle (U-bolts)81.0 ft-lbs
Leaf Spring to Chassis Bracket92.0 ft-lbs
Leaf Spring to Rear Shackle81.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket92.0 ft-lbs
Lug Nuts140 ft-lbs
Front Wheel Hub177 ft-lbs

Ignition

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

Battery & A/C

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

Service checks

Pressure Test15 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 Minimum psi
Engine Compression215 Nominal psi

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 2 stages
122 ft. lbs.22 ft. lbs
2long bolts75 degrees
Cylinder Head — tightening sequence 1 stages
122 ft. lbs. Step 2: long bolts: 75 degrees medium bolts: 65 degrees short bolts: 5522 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
122.0

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; coolant at 150,000 mi. The big-interval services (at 150,000 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.

Every 3,000 miKing Pin (lubricate)
At 7,500 miDrive Axle Assembly (drain & refill)
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 12,000 miUnderbody Splash Shield (inspect)
Every 30,000 miClutch Cross Shaft (lubricate) · Clutch Release Lever Pivot Points (lubricate) · Fuel Filter (replace) · Wheel Bearing (inspect)
Every 60,000 miAccessory Drive Belt (inspect) · EGR System (inspect) · Fuel Evaporative Emission Control System (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) · Transmission Fluid & Filter (replace)
At 107,500 miDrive Axle Assembly (drain & refill)
At 150,000 miEngine Coolant System (drain, flush & refill)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

2
Open recalls
NHTSA campaigns
36
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
81
Owner complaints
0 involved a crash · 0 a fire

No owner complaints on record with NHTSA for this vehicle.

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 Yukon 2WD. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
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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 Yukon 2WD take?

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

Does the 1998 Yukon 2WD have open recalls?

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