GMC TruckSierra 2500 HD2023Overview/gmc-truck/sierra-2500-hd/2023/base/

2023 GMC Truck Sierra 2500 HD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2023 Sierra 2500 HD.

The 2023 GMC Truck Sierra 2500 HD takes 8.0 qt of 5W-30 engine oil.

Model year202520232020

Quick specs

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

Engine oil capacity8.0 qtOEM · verified
Engine oil type5W-30 / 0W-30OEM · verified
Lug nut torque140.0 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 sizeLT275/70R18/E 125/122SOEM · verified
Wheel / rim8; Optional: 8, 8.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731742
Engine air filter84121219 alt 84554703
Fuel filter13539108
Spark plug12622441
Battery88865934 alt 88866309
Front wiper blades84578275
Thermostat12680544 alt 89018168
Cabin air filter84987523 alt 13508023

Service quick specs OEM factory data

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

This engine holds 8.0 qt of 5W-30 / 0W-30 engine oil, DOT 4 brake fluid. Torque lug nuts to 140.0 ft-lbs. The firing order is 1-8-7-2-6-5-4-3.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity6.0 qt
Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity14.4 qt
Brake FluidDOT 4
Engine Coolant Capacity15.4 qt
Engine OilSynthetic · 5W-30 · 0W-30
Engine Oil Capacity8.0 qt

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)18.0 ft-lbs
Camshaft Bearing/Carrier Cap Bolts or StudsRetainer bolts: 11.0 ft-lbs
Crankshaft Pulley and/or Damper Bolts43.0 ft-lbs
Cylinder Head InstructionsLeft side followed by the right side.
Cylinder Head InstructionsLeft side followed by the right side.
Engine Coolant Temperature (ECT) Sensor Bolt(s)15.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)31.0 ft-lbs

Chassis torques

Differential Fill Plug24.0 ft-lbs
Differential drain Plug24.0 ft-lbs
Lug Nuts140.0 ft-lbs
Transfer Case Fill Plug15.0 ft-lbs
Transfer Case Drain Plug15.0 ft-lbs

Ignition

Cylinder Firing Order1-8-7-2-6-5-4-3
Spark Plug ManufacturerGM/AC Delco
Spark Plug Gap0.037-0.043" in
Spark Plug Torque15.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.50 lbs
Oil GroupPAG
Oil Capacity3.40 oz
Standard BCI Group Number94R
Standard BCI Cranking Performance720 cca
Optional BCI Group NumberAuxiliary: 48
Optional BCI Cranking Performance730 cca

Brakes

Brake Caliper Bolt to Carrier Torque221.0
Minimum Pad Thickness0.079" in
Solid Rotor Minimum Thickness for ReplacementFront: 1.516; Rear: 1.280
Solid Rotor Minimum Thickness after RefinishFront: 1.535
Solid Rotor Maximum Scoring Depth0.059"
Variation from Parallelism Thickness Variation0.001"
Maximum Rotor Runout0.002"

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115.0 ft. lbs., Step 2: 85°15 ft. lbs
Cylinder Head — tightening sequence 1 stages
122.0 ft. lbs., Step 2: 59.0 ft. lbs., Step 3: 120°, Step 4: 24.022 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
122.0 ft. lbs., Step 2: 45°22 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
126.0 ft. lbs., Step 2: 30°, Step 3: 30°, Step 4: 30°26 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
17.4 ft. lbs., Step 2: 90°7.4 ft. lbs
Main Bearings — tightening sequence 1 stages
172.0 ft. lbs., Step 2: 97.0 ft. lbs., Step 3: 60°. Side Bolts: 59.072 ft. lbs
Oil Pan to Block Bolts — tightening sequence 1 stages
12 Bolts9 ft. lbs
Engine Valve Cover Bolts — tightening sequence 1 stages
17.4 ft. lbs., Step 2: 90°7.4 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 miBrake System (inspect) · Engine Air Filter Element (replace) · Engine Oil (inspect fluid level) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Engine Oil Life Monitor (inspect)
Every 22,500 miCabin Air Filter (replace) · Fuel Filter (replace)
Every 50,000 miTransfer Case Assembly (drain & refill)
Every 97,500 miSpark Plug Wires (inspect)
Every 100,000 miHood Hinge (inspect)
At 150,000 miEngine 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 Sierra 2500 HD. 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 2023 Sierra 2500 HD take?

8.0 qt of Dexos1 Gen 3 Full Synthetic 5W-30. Extreme cold with temperatures lower than -20°F may use 0W-30., per the factory manual.