GMC Vehicle Models & Specifications
8 models with verified fuel economy and engine specifications
Acadia
2015–2027 · 44 variants
Canyon
2015–2026 · 74 variants
Hummer EV
2024–2025 · 16 variants
Savana Cargo
2015–2015 · 2 variants
Savana Passenger
2015–2017 · 10 variants
Sierra
2015–2026 · 274 variants
Terrain
2015–2027 · 47 variants
Yukon
2015–2026 · 164 variants
GMC data pages by model
Jump straight to service intervals and specification data for any GMC model.
- Acadia maintenance schedule · vehicle class
- Canyon maintenance schedule · drivetrain
- Hummer EV maintenance schedule · drivetrain
- Savana Cargo maintenance schedule · engine specs · drivetrain · vehicle class · MPG
- Savana Passenger maintenance schedule · engine specs
- Sierra maintenance schedule · electric range
- Terrain maintenance schedule · vehicle class
- Yukon maintenance schedule · drivetrain
About GMC specifications on AutoSpecData
This hub indexes every GMC model line we hold verified data for — 8 nameplates covering 631 distinct trim and powertrain combinations across model years 2015 to 2027. That works out to roughly 79 variants per model line, which is why picking the exact year and engine matters when you compare fuel economy: two GMC vehicles wearing the same badge in the same year can differ by several MPG depending on drivetrain and transmission.
The deepest GMC coverage sits with the Sierra (274 variants, 2015–2026), the Yukon (164 variants, 2015–2026) and the Canyon (74 variants, 2015–2026). 5 GMC models are still current as of 2027, while 3 lines have been discontinued or renamed — those stay published because used buyers and owners still look up their MPG, engine, and service data.
Every GMC model page below breaks its data into five focused views: fuel economy (EPA city, highway, and combined MPG plus estimated annual fuel cost), engine specifications (displacement, cylinder count, fuel type, and forced induction where applicable), transmission, drivetrain, and vehicle class. Where a GMC model is rated for towing or has published bed and cargo dimensions, those figures appear on the model page too. Figures come from the EPA and Department of Energy fueleconomy.gov datasets and are cross-checked against NHTSA vPIC records; blank fields mean the source data does not publish that value for that trim, not that the value is zero.
If you are cross-shopping, start with the model you already have in mind, note the combined MPG for the specific year and drivetrain, then use the comparison tool to put it side by side against a rival. Annual fuel cost is usually the number that separates two otherwise similar GMC trims over a five-year ownership window.
GMC specs: common questions
How many GMC models are covered here?
8 GMC model lines are covered, spanning 631 individual trim and powertrain combinations from model years 2015 through 2027. Each model page breaks those trims out year by year with EPA city, highway, and combined MPG, engine displacement, cylinder count, transmission, and drivetrain.
Which GMC model has the most trim data?
The GMC Sierra has the deepest coverage with 274 recorded variants between 2015 and 2026. Model lines with more variants usually offered several engines, drivetrains, or transmission choices in the same year, so comparing trims within a single year matters more than comparing across years.
What model years of GMC vehicles are included?
Coverage runs from 2015 to 2027. The longest-running entry is the GMC Acadia (from 2015), and the most recently updated is the GMC Acadia (through 2027). Older years are included because used-car shoppers and owners looking up maintenance intervals need them as much as new-car buyers do.
Where does the GMC data come from?
Fuel economy, engine, transmission, drivetrain, and vehicle-class fields come from the US EPA and Department of Energy fueleconomy.gov datasets, with vehicle identification cross-checked against the NHTSA vPIC database. Nothing is estimated by us: if a figure is missing for a given GMC trim, the field is left blank rather than filled with a guess.
Are these GMC MPG figures real-world numbers?
They are EPA laboratory test ratings, which is the same standard used on the window sticker. Real-world results for a GMC typically land within about 10-15% of the combined rating, and drop further in cold weather, in stop-and-go traffic, at sustained highway speeds above 70 mph, or when towing.