model year

2021 GMC Sierra Cab Chassis 2WD configuration 43198

Official US catalog configuration for the 2021 GMC Sierra Cab Chassis 2WD: 5.3L 8-cylinder Regular Gasoline SIDI, Automatic 6-spd, Rear-Wheel Drive.

Claim-level evidence reviewed Reviewed 8/27/2026

answer

Exact catalog configuration

FuelEconomy.gov identifies this as configuration 43198 for the 2021 GMC Sierra Cab Chassis 2WD. The catalog row specifies 5.3L 8-cylinder Regular Gasoline SIDI, Automatic 6-spd, Rear-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 Cab Chassis 2WD
engine
5.3L 8-cylinder Regular Gasoline SIDI
source
FuelEconomy.gov vehicles.csv
fuelType
Regular Gasoline
cylinders
8
modelYear
2,021
drivetrain
Rear-Wheel Drive

SOURCES

applicability

Engine, transmission, and generation fields

Engine: 5.3L 8-cylinder Regular Gasoline SIDI. Transmission: Automatic 6-spd. Drive: Rear-Wheel Drive. Fuel: Regular Gasoline. Vehicle class: not specified. Generation label: Catalog span 2020–2026. The generation basis is catalog_span, which means contiguous catalog coverage and not an asserted OEM chassis-generation boundary.

make
GMC
model
Sierra Cab Chassis 2WD
engine
5.3L 8-cylinder Regular Gasoline SIDI
source
FuelEconomy.gov vehicles.csv
fuelType
Regular Gasoline
cylinders
8
modelYear
2,021
drivetrain
Rear-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
fff9b124ebb2ea5b4cc3be06848b0af9949fc2e21c5f6fdd07f9bfff86033e6e
sourceVehicleId
43198