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4WD platform

2018 GMC Truck Sierra

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

The 2018 GMC Truck Sierra. It takes 6.0 qt of 5W-30 engine oil.

Model year201820172016201520062005

Quick specs

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

Engine oil capacity6.0 qtOEM · verified
Engine oil type5W-30OEM · 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 48 · 730 CCA battery, OE oil filter 12691158. 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 48 · 730 CCAOEM · verified
Tire sizeLT245/75R17EOEM · verified

OE service part numbers OEM · verified

Engine oil filter12691158 alt 12690386
Engine air filter23349854 alt 84850016
Fuel filter13539108
Spark plug12680072
Battery88866309 alt 88866124
Front wiper blades23417074
Serpentine belt19210691 alt 12637204
Thermostat12680544 alt 12680457
Cabin air filter23281440

Service quick specs OEM factory data

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

This engine holds 6.0 qt of 5W-30 engine oil. Torque lug nuts to 140 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
Automatic Transmission FluidUse DEXRON(R)-VI GM P/N 89020661
Automatic Transmission Fluid Capacity6.0-7.4

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)18.0 ft-lbs
Crankshaft Position (CKP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)18.0 ft-lbs
Crankshaft Position (CKP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)15.0 ft-lbs
Crankshaft Position (CKP) Sensor Bolt(s)7.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.4 ft-lbs

Chassis torques

Leaf Spring to Rear Shackle129.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket129.0 ft-lbs
Lug Nuts140 ft-lbs
Lug Nuts140 ft-lbs
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

RefrigerantR134a
Refrigerant Capacity1.40-1.50 lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.00-6.10 oz
Standard BCI Group Number48
Standard BCI Cranking Performance730 cca
Standard BCI Group Number94R

Service checks

Key ON Engine OFF (KOEO)54.0-65.0
Key ON Engine OFF (KOEO)46.0-84.0
Key ON Engine OFF (KOEO)46.0-84.0
Key ON Engine OFF (KOEO)46.0-84.0
RPM43.0
Engine Compression100
Engine Compression100

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 74; Rear: 36
Brake Caliper Carrier to Hub Bolt TorqueFront: 170; Rear: 148
Vented Rotor Minimum Thickness for ReplacementFront: 1.102; Rear: .728
Vented Rotor Minimum Thickness after RefinishFront: 1.122; Rear: .748
Variation from Parallelism Thickness Variation.007(JD9), .001(J95, J96)
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
Camshaft Sprocket and/or Gear Bolt(s) — tightening sequence 1 stages
148.0 ft. lbs., Step 2: 9048 ft. lbs
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
585.0
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
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 3 stages
147.0 ft. lbs.47 ft. lbs
230.0 degrees30 degrees
330.0
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
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
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
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
174.0 ft. lbs., Step 2: 90 degrees. Install new bolt.74 ft. lbs
Cylinder Head — tightening sequence 3 stages

Prep Do not re-use old bolts. Do not allow oil on cylinder head or head bolt bosses. · M11 Bolts

122.0 ft. lbs.22 ft. lbs
290 degrees90 degrees
370 degrees; M8 Bolts70 degrees
122.0
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 3 stages

Prep Do not re-use old bolts · M11 Bolts

122.0 ft. lbs.22 ft. lbs
290 degrees90 degrees
370 degrees; M8 Bolts70 degrees
122.0 ft. lbs.22 ft. lbs
Cylinder Head — tightening sequence 3 stages

Prep Do not re-use old bolts.

159.0 ft. lbs.59 ft. lbs
290
360 degrees60 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
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
115.0 ft. lbs.15 ft. lbs
237.0 ft. lbs.37 ft. lbs
374.0
Engine Flywheel Bolts — tightening sequence 3 stages
111.0 ft. lbs.11 ft. lbs
222.0 ft. lbs.22 ft. lbs
345.0
Engine Flywheel Bolts — tightening sequence 3 stages
159.0 ft. lbs.59 ft. lbs
260.0 degrees60 degrees
360.0
Intake Manifold to Engine Bolts — tightening sequence 2 stages
13.6 ft. lbs.3.6 ft. lbs
27.4
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
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages
111 ft. lbs.11 ft. lbs
215
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

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

Prep Inner bolts

115.0 ft. lbs.15 ft. lbs
280 degrees; Outer bolts80 degrees
115.0 ft. lbs.15 ft. lbs
251.0 degrees; Side bolts51 degrees
118.0 ft. lbs.18 ft. lbs
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

115.0 ft. lbs.15 ft. lbs
280 degrees; Outer bolts80 degrees
111.0 ft. lbs.11 ft. lbs
2110.0 degrees; Side bolts110 degrees
122.0 ft. lbs.22 ft. lbs
260.0 degrees60 degrees
Engine Valve Cover Bolts — tightening sequence 1 stages
17.4 ft. lbs., Step 2: 907.4 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 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) · Fuel Filter (replace)
At 45,000 miTransmission Filter (replace)
Every 45,000 miFuel Evaporative Emission Control System (inspect) · Transfer Case Assembly (drain & refill)
Every 97,500 miSpark Plug Wires (inspect) · Spark Plugs (replace) · Transmission Fluid & Filter (replace)
At 150,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill) · Transmission 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

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Sierra. 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 48 batteryVehicles taking 6.0 qt4WD-platform vehiclesEngine oil filter 12691158Engine air filter 23349854Fuel filter 13539108Spark plug 12680072

Reference guides

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

OBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2018 Sierra take?

6.0 qt of 5W-30 meeting GM Dexos 1 specification or equivalent., per the factory manual.