GMC TruckYukon2018Overview/gmc-truck/yukon/2018/base/
4WD platform

2018 GMC Truck Yukon

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 Yukon.

The 2018 GMC Truck Yukon. It takes 8.0 qt of 0W-20 engine oil.

Model year202620252024202320222021202020192018

Quick specs

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

Engine oil capacity8.0 qtOEM · verified
Engine oil type0W-20OEM · 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 94R · 720 CCA battery, OE oil filter 12731742. 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 94R · 720 CCAOEM · verified
Tire sizeP275/55R20OEM · verified
Wheel / rim9.0; Optional: 9.0, 8.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731742
Engine air filter23349854
Spark plug12622441
Battery88866124 alt 88866309
Front wiper blades84613732
Serpentine belt12643517 alt 12658178
Thermostat12620318 alt 12674639
Cabin air filter23281440

Service quick specs OEM factory data

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

This engine holds 8.0 qt of 0W-20 engine oil, Synthetic · 75W-90 · GL-5 · 75W-85 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 1-2-7-8-4-5-6-3. 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

Automatic Transmission FluidDEXRON(R)-VI GM P/N 89020661
Automatic Transmission Fluid Capacity6.0
Automatic Transmission FluidUse Dexron ULV
Automatic Transmission Fluid Capacity8.1
Automatic Transmission FluidUse Dexron HP
Automatic Transmission Fluid Capacity7.4
Brake FluidDOT 3
Differential Gear OilSynthetic · 75W-90 · GL-5 · 75W-85

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)18.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)31.0 ft-lbs
Knock Sense (KS) Bolt(s)18.0 ft-lbs
Exhaust Manifold to Cylinder Head Bolts17 ft-lbs
Exhaust Manifold to Cylinder Head Bolts17 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs18.0 ft-lbs

Chassis torques

Lug Nuts140 ft-lbs
Front Wheel Hub188.0 Do not re-use old hub nut. ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-6-5-4-3-2
Cylinder Firing Order1-2-3-4-5-6
Cylinder Firing Order1-8-7-2-6-5-4-3
Cylinder Firing Order1-2-7-8-4-5-6-3
Spark Plug ManufacturerAC Delco
Spark Plug Gap.037 - .043 in
Spark Plug Torque15 ft-lbs

Battery & A/C

Standard BCI Group Number94R
Standard BCI Cranking Performance720 cca
Standard BCI Group Number94R
Standard BCI Cranking Performance720 cca
Standard BCI Group Number94R
Standard BCI Cranking Performance720 cca

Service checks

Key ON Engine OFF (KOEO)46.0-84.0
Key ON Engine OFF (KOEO)46.0-84.0
Engine Compression100

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 74; Rear: 38 Use; Rear: 77
Brake Caliper Carrier to Hub Bolt TorqueFront: 170; Rear: 148; Rear: 221
Vented Rotor Minimum Thickness for ReplacementFront: 1.102; Rear: .728; Front: 1.516; Rear: 1.280
Vented Rotor Minimum Thickness after RefinishFront: 1.122; Rear: .748; Front: 1.535; Rear: 1.299
Variation from Parallelism Thickness VariationRear: .007; Rear: .001
Maximum Rotor Runout.002

Multi-step torque procedures OEM · verified

Camshaft Sprocket and/or Gear Bolt(s) — tightening sequence 1 stages
148.0 ft. lbs., Step 2: 9048 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 2 stages
115.0 ft. lbs.15 ft. lbs
285.0
Connecting Rod (Large End) Bearings — tightening sequence 2 stages
115.0 ft. lbs.15 ft. lbs
285.0
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1Use old crankshaft balancer bolt and tighten to 240.0 ft. lbs., Step 2: Remove bolt and throw away. Step 3: Make sure the nose of the crankshaft is recessed 2.40-4.48mm into the balancer bolt. Step 4: Use new crankshaft bolt. Step 5: 110.0 ft. lbs., Step 6: 360 degrees, Step 7: 59.0 ft. lbs., Step 8: Balancer bolt with rotating washer tighten additional 200 degrees; Balancer Bolt with flanged head tighten additional 125 degrees.240 ft. lbs
Cylinder Head — tightening sequence 4 stages

Prep Do not re-use old bolts.

159.0 ft. lbs.59 ft. lbs
290 degrees90 degrees
3Internal Hex head bolts40 degrees
4Except Hex head bolts60 degrees
Cylinder Head — tightening sequence 4 stages

Prep Do not re-use old bolts.

159.0 ft. lbs.59 ft. lbs
290 degrees90 degrees
3Internal Hex head bolts40 degrees
4Except Hex head bolts60 degrees
Engine Flywheel Bolts — tightening sequence 3 stages
111.0 ft. lbs.11 ft. lbs
222.0 ft. lbs.22 ft. lbs
345.0
Intake Manifold to Engine Bolts — tightening sequence 2 stages
13.7 ft. lbs.3.7 ft. lbs
27.4
Intake Manifold to Engine Bolts — tightening sequence 2 stages
13.7 ft. lbs.3.7 ft. lbs
27.4
Main Bearings — tightening sequence 2 stages

Prep Inner bolts

122.0 ft. lbs.22 ft. lbs
2110 degrees; Outer bolts110 degrees
115.0 ft. lbs.15 ft. lbs
280.0 degrees; Side bolts80 degrees
115.0 ft. lbs.15 ft. lbs
260.0 degrees60 degrees
Main Bearings — tightening sequence 2 stages

Prep Inner bolts

122.0 ft. lbs.22 ft. lbs
2110 degrees; Outer bolts110 degrees
115.0 ft. lbs.15 ft. lbs
280.0 degrees; Side bolts80 degrees
115.0 ft. lbs.15 ft. lbs
260.0 degrees60 degrees

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 97,500 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 7,500 miAccelerator Pedal (inspect) · Body Latches, Locks & Hinges (lubricate) · Brake Shift Interlock Solenoid (inspect) · Brake System (inspect) · Engine Air Filter Element (inspect) · Engine Oil (inspect fluid level)
Every 22,500 miCabin Air Filter (replace)
Every 45,000 miFuel Evaporative Emission Control System (inspect)
Every 97,500 miSpark Plug Wires (inspect) · Spark Plugs (replace) · Transfer Case Assembly (drain & refill)
At 150,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)

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. 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 2018 Yukon take?

8.0 qt of 0W-20 meeting GM Dexos 1, per the factory manual.