Official vehicle configuration guide

2024 GMC Sierra

Compare 26 EPA-tested configurations, including the exact powertrain, fuel, driven wheels, engine, transmission and efficiency data available for this model year.

U.S. market 26 EPA configurations Flex fuelGasolineDiesel
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Official EPA configuration data

Choose the closest tested configuration.

These entries distinguish powertrains and driveline combinations recorded by the U.S. EPA. They help narrow the vehicle, but they are not guaranteed retail trim or option-package names.

26 configurations
Match the fuel type, drive and transmission shown on the vehicle documents. A dealer package may use a different name.
Selected configurationSierra 2WD — Flex fuel · RWD · 5.3L 8-cyl · 18 MPG
Flex fuel
Fuel
Gasoline or E85
Engine
SIDI; FFV
Drive
RWD
Transmission
Automatic 10-spd
EPA combined
18 MPG combined
City / highway
16 / 20 MPG
Electric motor
Not listed
Range
312 mi electric
240 V charge time
Not listed
Secondary / blended economy
13 MPG secondary fuel
EPA vehicle class
Standard Pickup Trucks 2WD
Stop-start system
No
Open this configuration on FuelEconomy.gov ↗

Sierra 2WD — Flex fuel · RWD · 5.3L 8-cyl · 18 MPG selected.

Configuration is not the same as trim. EPA records can separate engines, fuel systems, transmissions or driven wheels without identifying badges such as LX, XLE or Touring. Confirm the retail trim with the window sticker, build sheet or manufacturer VIN portal.

Compare every tested configuration

Mechanical and efficiency differences.

All rows are visible in the page and link to their exact government record. EPA configurations identify tested hardware, not guaranteed retail trim names.

26 official records
Best combined MPG25 MPG

Sierra 2WD — Diesel · RWD · 3L 6-cyl · 25 MPG

Longest listed range312 mi

Sierra 2WD — Flex fuel · RWD · 5.3L 8-cyl · 18 MPG

View all 26 EPA configuration rows
EPA carlinePowertrainEngine / motorDriveTransmissionCombinedRange / chargeSource
Sierra 2WD — Flex fuel · RWD · 5.3L 8-cyl · 18 MPGFlex fuelGasoline or E85SIDI; FFVRWDAutomatic 10-spd18 MPG16 city / 20 highway312 mi EVEPA record ↗
Sierra 2WD — Gasoline · RWD · 5.3L 8-cyl · 16 MPGGasolineRegularSIDI; MunicipalRWDAutomatic 10-spd16 MPG15 city / 19 highway—EPA record ↗
Sierra 2WD — Gasoline · RWD · 5.3L 8-cyl · 18 MPG · Automatic 10-spd · SIDI; with Sport ModeGasolineRegularSIDI; with Sport ModeRWDAutomatic 10-spd18 MPG16 city / 20 highway—EPA record ↗
Sierra 2WD — Gasoline · RWD · 5.3L 8-cyl · 18 MPG · Automatic 10-spd · SIDI; Stop-StartGasolineRegularSIDI; Stop-StartRWDAutomatic 10-spd18 MPG16 city / 21 highway—EPA record ↗
Sierra 2WD — Diesel · RWD · 3L 6-cyl · 25 MPGDieselDiesel3 L · 6-cylRWDAutomatic 10-spd25 MPG23 city / 29 highway—EPA record ↗
Sierra 2WD — Gasoline · RWD · 2.7L 4-cyl · 20 MPGGasolineRegularSIDIRWDAutomatic 8-spd20 MPG18 city / 22 highway—EPA record ↗
Sierra 2WD — Gasoline · RWD · 2.7L 4-cyl · 19 MPGGasolineRegularSIDI; with Sport ModeRWDAutomatic 8-spd19 MPG17 city / 21 highway—EPA record ↗
Sierra 4WD — Flex fuel · 4WD · 5.3L 8-cyl · 17 MPGFlex fuelGasoline or E85SIDI; FFV4WDAutomatic 10-spd17 MPG15 city / 19 highway288 mi EVEPA record ↗
Sierra 4WD — Gasoline · 4WD · 6.2L 8-cyl · 16 MPGGasolinePremiumSIDI4WDAutomatic 10-spd16 MPG15 city / 19 highway—EPA record ↗
Sierra 4WD — Gasoline · 4WD · 5.3L 8-cyl · 16 MPGGasolineRegularSIDI; Municipal4WDAutomatic 10-spd16 MPG15 city / 19 highway—EPA record ↗
Sierra 4WD — Gasoline · 4WD · 5.3L 8-cyl · 17 MPG · Automatic 10-spd · SIDI; wth Sport ModeGasolineRegularSIDI; wth Sport Mode4WDAutomatic 10-spd17 MPG15 city / 19 highway—EPA record ↗
Sierra 4WD — Gasoline · 4WD · 5.3L 8-cyl · 17 MPG · Automatic 10-spd · SIDIGasolineRegularSIDI4WDAutomatic 10-spd17 MPG15 city / 20 highway—EPA record ↗
Sierra 4WD — Diesel · 4WD · 3L 6-cyl · 24 MPGDieselDiesel3 L · 6-cyl4WDAutomatic 10-spd24 MPG23 city / 27 highway—EPA record ↗
Sierra 4WD — Gasoline · 4WD · 2.7L 4-cyl · 17 MPGGasolineRegularSIDI; with Sport Mode4WDAutomatic 8-spd17 MPG17 city / 18 highway—EPA record ↗
Sierra 4WD — Gasoline · 4WD · 2.7L 4-cyl · 18 MPGGasolineRegularSIDI4WDAutomatic 8-spd18 MPG17 city / 20 highway—EPA record ↗
Sierra 4WD AT4X — Gasoline · 4WD · 6.2L 8-cyl · 15 MPGGasolinePremiumSIDI4WDAutomatic 10-spd15 MPG14 city / 16 highway—EPA record ↗
Sierra 4WD AT4X — Diesel · 4WD · 3L 6-cyl · 19 MPGDieselDiesel3 L · 6-cyl4WDAutomatic 10-spd19 MPG19 city / 20 highway—EPA record ↗
Sierra Cab Chassis 2WD — Gasoline · RWD · 5.3L 8-cyl · 15 MPGGasolineRegularSIDIRWDAutomatic 10-spd15 MPG14 city / 17 highway—EPA record ↗
Sierra Cab Chassis 4WD — Gasoline · 4WD · 5.3L 8-cyl · 15 MPGGasolineRegularSIDI4WDAutomatic 10-spd15 MPG14 city / 17 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Flex fuel · 4WD · 5.3L 8-cyl · 17 MPGFlex fuelGasoline or E85SIDI; FFV4WDAutomatic 10-spd17 MPG15 city / 19 highway288 mi EVEPA record ↗
Sierra Mud Terrain Tires 4WD — Gasoline · 4WD · 6.2L 8-cyl · 15 MPGGasolinePremiumSIDI4WDAutomatic 10-spd15 MPG14 city / 17 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Gasoline · 4WD · 5.3L 8-cyl · 16 MPG · Automatic 10-spd · SIDI; MunicipalGasolineRegularSIDI; Municipal4WDAutomatic 10-spd16 MPG15 city / 19 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Gasoline · 4WD · 5.3L 8-cyl · 16 MPG · Automatic 10-spd · SIDI; with Sport ModeGasolineRegularSIDI; with Sport Mode4WDAutomatic 10-spd16 MPG15 city / 18 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Gasoline · 4WD · 5.3L 8-cyl · 16 MPG · Automatic 10-spd · SIDIGasolineRegularSIDI4WDAutomatic 10-spd16 MPG15 city / 18 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Diesel · 4WD · 3L 6-cyl · 22 MPGDieselDiesel3 L · 6-cyl4WDAutomatic 10-spd22 MPG21 city / 23 highway—EPA record ↗
Sierra Mud Terrain Tires 4WD — Gasoline · 4WD · 2.7L 4-cyl · 16 MPGGasolineRegularSIDI4WDAutomatic 8-spd16 MPG16 city / 17 highway—EPA record ↗
At a glance

What the official records cover.

Each option above is tied to a unique FuelEconomy.gov vehicle ID. EPA names sometimes expose a retail badge such as LE or Woodland Edition, but many records identify only the tested mechanical configuration.

01Official carlines

Sierra 2WD, Sierra 4WD, Sierra 4WD AT4X, Sierra Cab Chassis 2WD, Sierra Cab Chassis 4WD, Sierra Mud Terrain Tires 4WD

02Powertrains

Flex fuel, Gasoline, Diesel

03Driven wheels

RWD, 4WD

04Engine / motor options

5.3L 8-cyl, 3L 6-cyl, 2.7L 4-cyl, 6.2L 8-cyl

How to identify yours

Match the hardware before the badge.

  1. 1

    Start with fuel and powertrain. Check whether the vehicle is gasoline, diesel, hybrid, plug-in hybrid, electric or fuel-cell.

  2. 2

    Match driven wheels and engine. Use FWD, RWD, AWD or 4WD plus displacement/cylinder information from the window sticker or registration.

  3. 3

    Confirm the exact EPA record. Select the closest option and open its FuelEconomy.gov link. Use a VIN-specific build sheet when you need the retail trim or option package.

Source: U.S. Department of Energy / EPA FuelEconomy.gov dataset ↗ · U.S. market snapshot 2026-11-04. Economy values are official estimates, not a promise of real-world consumption.

02 Feature research status

The configuration guide is live.

The official mechanical and efficiency data for this exact vehicle is published above. Hidden-feature instructions are a separate layer: they appear only after the correct owner manual, model-year scope and equipment caveats have been checked.

EPA configurations publishedOfficial records linkedOwner-manual features in review
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