GMC Sierra

Transmission, start-stop, premium fuel and flex-fuel by model year, 2010–2026

TransmissionThe 2026 GMC Sierra is offered with an 8-speed automatic or a 10-speed automatic, depending on configuration.

Auto start-stopIt depends on configuration: 20 of 22 2026 GMC Sierra configurations EPA tested have auto start-stop.

Premium fuelEPA tested 3 of 22 2026 GMC Sierra configurations on premium fuel and the rest on regular gasoline or diesel; your owner's manual or fuel-door label is the authority.

Flex-fuel (E85)Some versions: EPA lists 2 of 22 2026 GMC Sierra configurations as flex-fuel vehicles (FFV) that can use E85.

2026 at a glance

25 configurations tested by EPA

CVTNone

0 of 22

No CVT

ManualNone

0 of 22

Not offered

Auto start-stopSome

20 of 22

Premium fuelSome

3 of 22

EPA test fuel

Flex-fuel (E85)Some

2 of 22

Check for the FFV badge

EPA lists no manual transmission for any GMC Sierra from 2010–2026.

GMC Sierra features by model year

Which GMC Sierra model years have each feature. Each cell links to that year's configurations.
	’10	’11	’12	’13	’14	’15	’16	’17	’18	’19	’20	’21	’22	’23	’24	’25	’26
CVT	2010 CVT: Some	2011 CVT: Some	2012 CVT: Some	2013 CVT: Some	2014 CVT: None	2015 CVT: None	2016 CVT: None	2017 CVT: None	2018 CVT: None	2019 CVT: None	2020 CVT: None	2021 CVT: None	2022 CVT: None	2023 CVT: None	2024 CVT: None	2025 CVT: None	2026 CVT: None
Manual	2010 Manual: None	2011 Manual: None	2012 Manual: None	2013 Manual: None	2014 Manual: None	2015 Manual: None	2016 Manual: None	2017 Manual: None	2018 Manual: None	2019 Manual: None	2020 Manual: None	2021 Manual: None	2022 Manual: None	2023 Manual: None	2024 Manual: None	2025 Manual: None	2026 Manual: None
Automated manual	2010 Automated manual: None	2011 Automated manual: None	2012 Automated manual: None	2013 Automated manual: None	2014 Automated manual: None	2015 Automated manual: None	2016 Automated manual: None	2017 Automated manual: None	2018 Automated manual: None	2019 Automated manual: None	2020 Automated manual: None	2021 Automated manual: None	2022 Automated manual: None	2023 Automated manual: None	2024 Automated manual: None	2025 Automated manual: None	2026 Automated manual: None
Automatic	2010 Automatic: Some	2011 Automatic: Some	2012 Automatic: Some	2013 Automatic: Some	2014 Automatic: All	2015 Automatic: All	2016 Automatic: All	2017 Automatic: All	2018 Automatic: All	2019 Automatic: All	2020 Automatic: All	2021 Automatic: All	2022 Automatic: All	2023 Automatic: All	2024 Automatic: All	2025 Automatic: All	2026 Automatic: All
Start-stop	2010 Start-stop: Not reported	2011 Start-stop: Not reported	2012 Start-stop: Not reported	2013 Start-stop: Some	2014 Start-stop: None	2015 Start-stop: None	2016 Start-stop: Some	2017 Start-stop: Some	2018 Start-stop: Some	2019 Start-stop: Some	2020 Start-stop: Some	2021 Start-stop: Some	2022 Start-stop: Some	2023 Start-stop: Some	2024 Start-stop: Some	2025 Start-stop: Some	2026 Start-stop: Some
Premium fuel	2010 Premium fuel: None	2011 Premium fuel: None	2012 Premium fuel: None	2013 Premium fuel: None	2014 Premium fuel: None	2015 Premium fuel: None	2016 Premium fuel: None	2017 Premium fuel: None	2018 Premium fuel: Some	2019 Premium fuel: Some	2020 Premium fuel: Some	2021 Premium fuel: Some	2022 Premium fuel: Some	2023 Premium fuel: Some	2024 Premium fuel: Some	2025 Premium fuel: Some	2026 Premium fuel: Some
Flex-fuel	2010 Flex-fuel: Some	2011 Flex-fuel: Some	2012 Flex-fuel: Some	2013 Flex-fuel: Some	2014 Flex-fuel: Some	2015 Flex-fuel: Some	2016 Flex-fuel: Some	2017 Flex-fuel: Some	2018 Flex-fuel: Some	2019 Flex-fuel: Some	2020 Flex-fuel: Some	2021 Flex-fuel: Some	2022 Flex-fuel: Some	2023 Flex-fuel: Some	2024 Flex-fuel: Some	2025 Flex-fuel: Some	2026 Flex-fuel: Some

All configurationsSome configurationsNoneNot reported by EPA

Configurations by year

2026 GMC Sierra

25 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD with Sport Mode	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD with Sport Mode	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4X	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4X with Sport Mode	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD FFV	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra 4WD with Sport Mode	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD with Sport Mode	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD with Sport Mode	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
SIERRA EV Ext Range (11kW Charger)	Electric	Single-speed (electric drive)A1	4-Wheel	n/a	Electricity	No
SIERRA EV Ext Range (19kW Charger)	Electric	Single-speed (electric drive)A1	4-Wheel	n/a	Electricity	No
SIERRA EV Std Range (11kW Charger)	Electric	Single-speed (electric drive)A1	4-Wheel	n/a	Electricity	No
Sierra Mud Terrain Tires 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Mud Terrain Tires 4WD (Sport Mode)	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD FFV	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra Mud Terrain Tires with Sport Mode	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No

2025 GMC Sierra

25 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4X	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD AT4X	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra EV	Electric	Single-speed (electric drive)A1	4-Wheel	n/a	Electricity	No
Sierra Mud Terrain Tires 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No

2024 GMC Sierra

26 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	No	Regular	FFV
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4X	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD AT4X	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No

2023 GMC Sierra

24 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	No	Regular	FFV
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4X	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	FFV
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No

2022 GMC Sierra

34 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Premium	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	10-speed automatic10-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra Mud Terrain Tires 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Premium	No
Sierra Mud Terrain Tires 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No

2021 GMC Sierra

36 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Premium	No
Sierra 4WD AT4	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD AT4	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD AT4	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	No	Premium	No
Sierra Cab Chassis 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra Cab Chassis 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2020 GMC Sierra

26 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	Rear-Wheel	Yes	Diesel	No
Sierra 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra 4WD AT4	3.0L 6-cyl turbo diesel	10-speed automatic10-spd	4-Wheel	Yes	Diesel	No
Sierra 4WD AT4	5.3L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra 4WD AT4	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra 4WD AT4	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra Cab Chassis 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra Cab Chassis 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2019 GMC Sierra

22 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra C10 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra C10 2WD	2.7L 4-cyl turbo	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra C10 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C10 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C10 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C10 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra C10 Cab Chassis 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C10 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C10 XFE 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra K10 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra K10 4WD	2.7L 4-cyl turbo	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra K10 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K10 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K10 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K10 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra K10 4WD	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra K10 4WD AT4	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra K10 4WD AT4	6.2L 8-cyl	10-speed automatic10-spd	4-Wheel	Yes	Premium	No
Sierra K10 Cab Chassis 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K10 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra LTD C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra LTD K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2018 GMC Sierra

14 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 15 Hybrid 4WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra C15 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	6.2L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Premium	No
Sierra C15 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra K15 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	6.2L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Premium	No
Sierra K15 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2017 GMC Sierra

14 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 15 Hybrid 4WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra C15 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	6.2L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra K15 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	6.2L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2016 GMC Sierra

14 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	Rear-Wheel	Yes	Regular	No
Sierra 15 Hybrid 4WD	5.3L 8-cyl hybrid	8-speed automatic8-spd	4-Wheel	Yes	Regular	No
Sierra C15 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	5.3L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	6.2L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra K15 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	5.3L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	6.2L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2015 GMC Sierra

14 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra C15 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra C15 2WD	6.2L 8-cyl	8-speed automatic8-spd	Rear-Wheel	No	Regular	No
Sierra C15 Cab Chassis 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 Cab Chassis 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra K15 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	6.2L 8-cyl	8-speed automatic8-spd	4-Wheel	No	Regular	No
Sierra K15 Cab Chassis 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 Cab Chassis 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2014 GMC Sierra

6 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra C15 2WD	4.3L 6-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	6.2L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	No
Sierra K15 4WD	4.3L 6-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	No

2013 GMC Sierra

12 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	Rear-Wheel	Yes	Regular	No
Sierra 15 Hybrid 4WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	4-Wheel	Yes	Regular	No
Sierra C15 2WD	4.3L 6-cyl	4-speed automatic4-spd	Rear-Wheel	Yes	Regular	No
Sierra C15 2WD	4.8L 8-cyl	4-speed automatic4-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 2WD	6.2L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra C15 XFE 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	No	Regular	FFV
Sierra K15 4WD	4.3L 6-cyl	4-speed automatic4-spd	4-Wheel	No	Regular	No
Sierra K15 4WD	4.8L 8-cyl	4-speed automatic4-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 4WD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	No	Regular	FFV
Sierra K15 AWD	6.2L 8-cyl	6-speed automatic6-spd	All-Wheel	No	Regular	FFV

2012 GMC Sierra

12 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	Rear-Wheel	Not reported	Regular	No
Sierra 15 Hybrid 4WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	4-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.3L 6-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.8L 8-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	6.2L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 XFE 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	4.3L 6-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	No
Sierra K15 4WD	4.8L 8-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 AWD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV

2011 GMC Sierra

12 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	Rear-Wheel	Not reported	Regular	No
Sierra 15 Hybrid 4WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	4-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.3L 6-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.8L 8-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	6.2L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 XFE 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	4.3L 6-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	No
Sierra K15 4WD	4.8L 8-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 AWD	6.2L 8-cyl	6-speed automatic6-spd	All-Wheel	Not reported	Regular	FFV

2010 GMC Sierra

12 configurations

EPA model name	Engine	Transmission	Drive	Start-stop	EPA test fuel	Flex-fuel
Sierra 15 Hybrid 2WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	Rear-Wheel	Not reported	Regular	No
Sierra 15 Hybrid 4WD	6.0L 8-cyl hybrid	CVT (hybrid eCVT)variable gear ratios	4-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.3L 6-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	No
Sierra C15 2WD	4.8L 8-cyl	4-speed automatic4-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 2WD	6.2L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra C15 XFE 2WD	5.3L 8-cyl	6-speed automatic6-spd	Rear-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	4.3L 6-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	No
Sierra K15 4WD	4.8L 8-cyl	4-speed automatic4-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	5.3L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 4WD	6.2L 8-cyl	6-speed automatic6-spd	4-Wheel	Not reported	Regular	FFV
Sierra K15 AWD	6.2L 8-cyl	6-speed automatic6-spd	All-Wheel	Not reported	Regular	FFV

Check before you buy or refuel Confirm on the window sticker, owner's manual or with the dealer. Trims and options can differ from the configurations EPA tested.

About premium fuel EPA data shows the fuel a vehicle was tested on. It does not say whether premium is required or only recommended. Your owner's manual or fuel-door label is the authority.

Before using E85 Confirm the vehicle is a flex-fuel vehicle (FFV) in the owner's manual, or look for a yellow gas cap or an "FFV" badge. Not every version of a model is flex-fuel.

Source: U.S. EPA / Department of Energy vehicle data fromFuelEconomy.gov, data as of September 29, 2026.See how we classify vehicles.

Find E85 stations near you

Search public E85 stations within 50 miles. Station listings can be out of date, soconfirm availability before you go.

Station data: Alternative Fuel Stations API, National Laboratory of the Rockies (formerly NREL), via the U.S. Department of Energy's Alternative Fuels Data Center. Your location is used only for this search and is not stored.

GMC Sierra

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