model year

2021 GMC Sierra 4WD AT4 configuration 44032

Official US catalog configuration for the 2021 GMC Sierra 4WD AT4: 5.3L 8-cylinder Regular Gasoline SIDI, Automatic 10-spd, 4-Wheel Drive.

Primary records linked at claim level Data refreshed 8/27/2026

answer

Exact catalog configuration

FuelEconomy.gov identifies this as configuration 44032 for the 2021 GMC Sierra 4WD AT4. The catalog row specifies 5.3L 8-cylinder Regular Gasoline SIDI, Automatic 10-spd, 4-Wheel Drive, and Regular Gasoline. This is a configuration record, not a statement that every vehicle sold under the same model name has this powertrain.

make
GMC
model
Sierra 4WD AT4
engine
5.3L 8-cylinder Regular Gasoline SIDI
source
FuelEconomy.gov vehicles.csv
fuelType
Regular Gasoline
cylinders
8
modelYear
2,021
drivetrain
4-Wheel Drive

SOURCES

applicability

Engine, transmission, and generation fields

Engine: 5.3L 8-cylinder Regular Gasoline SIDI. Transmission: Automatic 10-spd. Drive: 4-Wheel Drive. Fuel: Regular Gasoline. Vehicle class: not specified. Generation label: Catalog span 2020–2021. The generation basis is catalog_span, which means contiguous catalog coverage and not an asserted OEM chassis-generation boundary.

make
GMC
model
Sierra 4WD AT4
engine
5.3L 8-cylinder Regular Gasoline SIDI
source
FuelEconomy.gov vehicles.csv
fuelType
Regular Gasoline
cylinders
8
modelYear
2,021
drivetrain
4-Wheel Drive

diagnosis

How to use this configuration

Match the VIN, emissions label, engine identifier, transmission, drivetrain, and build information before ordering a part or applying a diagnostic procedure. FuelEconomy.gov configuration IDs describe catalog variants; they do not prove the equipment installed on an individual vehicle.

individualVehicleClaim
No
vinVerificationRequired
Yes

methodology

Source and update method

This page is generated from one exact row in the official FuelEconomy.gov downloadable vehicle dataset. Car Trouble Lab stores the source vehicle ID and row digest, and republishes a new reviewed snapshot when the source facts change.

source
FuelEconomy.gov
rowSha256
1241b036b84025f411902a15cbc12a5d2152bac0fcbd99bdba0c0f2dc51523ac
sourceVehicleId
44032