2019 GMC Sierra — Full Specifications
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The 2019 GMC Sierra is a pickup offered with 4 engines (2.7L 4-cyl turbo, 4.3L 6-cyl, 5.3L 8-cyl). Its most fuel-efficient configuration returns around 25 mpg (UK) / 21 mpg (US EPA) combined, with 19–25 mpg (UK) across all configurations. Owners often keep a GMC Sierra workshop manual to hand for servicing and repairs.
Compared with the 2018 GMC Sierra: Fuel economy is essentially unchanged at around 25 mpg (UK) combined. EPA lists new engine options for 2019: 2.7L 4-cyl turbo. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine (most efficient) | 2.7L 4-cyl turbo |
|---|---|
| Engine options | 2.7L 4-cyl turbo · 4.3L 6-cyl · 5.3L 8-cyl · 6.2L 8-cyl |
| Transmission (most efficient) | Automatic 8-spd |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Pickup |
| Fuel Economy (UK) | 25 combined / 24 urban / 28 extra-urban mpg |
| Fuel Economy (US EPA) | 21 combined / 20 city / 23 highway mpg |
| CO₂ Emissions | 262 g/km |
| EPA Greenhouse Gas Score | 3 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,200 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 11 configurations for the 2019 GMC Sierra across 4 engines (2.7L 4-cyl turbo, 4.3L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl). Combined fuel economy ranges from 16 to 21 mpg (US), or 19 to 25 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2.7L 4-cyl turbo | Automatic 8-spd | 4-Wheel Drive | 24 | 20 (19/22) | 277 | $3,350 |
| 2.7L 4-cyl turbo | Automatic 8-spd | Rear-Wheel Drive | 25 | 21 (20/23) | 262 | $3,200 |
| 4.3L 6-cyl | Automatic 6-spd | 4-Wheel Drive | 20 | 17 (15/20) | 329 | $3,950 |
| 4.3L 6-cyl | Automatic 6-spd | Rear-Wheel Drive | 20 | 17 (16/21) | 316 | $3,950 |
| 5.3L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 20 | 17 (15/21) | 321 | $3,950 |
| 5.3L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 19 | 16 (15/19) | 339 | $4,200 |
| 5.3L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 20 | 17 (15/22) | 317 | $3,950 |
| 5.3L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 20 | 17 (15/20) | 329 | $3,950 |
| 5.3L 8-cyl | Automatic 8-spd | 4-Wheel Drive | 20 | 17 (15/21) | 316 | $3,950 |
| 5.3L 8-cyl | Automatic 8-spd | Rear-Wheel Drive | 23 | 19 (17/23) | 293 | $3,550 |
| 6.2L 8-cyl | Automatic 10-spd | 4-Wheel Drive | 20 | 17 (15/20) | 326 | $4,850 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2019 GMC Sierra
Running Costs: 2019 GMC Sierra
Covering around 8,000 miles a year in a 2019 GMC Sierra at 25 mpg combined, expect roughly 1,455 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,200 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2019 GMC Sierra Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 17 safety recall campaigns that include the 2019 GMC Sierra (as of 6 October 2026). Most affected areas: Air bags (5), Tires (3), Seat belts (2). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Air bags — campaign 26V325000, reported 21 May 2026. Risk: A detached end cap or inflator rupture can allow compressed gas to escape and project the end cap or fragments of the inflator into the vehicle, increasing the risk of injury.
- Air bags — campaign 26V166000, reported 19 March 2026. Risk: A detached end cap or inflator rupture can allow compressed gas to escape and project the end cap or fragments of the inflator into the vehicle, increasing the risk of injury.
- Air bags — campaign 25V432000, reported 26 June 2025. Risk: A detached end cap or inflator rupture can allow compressed gas to escape and project the end cap or fragments of the inflator into the vehicle, increases the risk of injury or crash.
- Air bags — campaign 24V756000, reported 10 October 2024. Risk: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
Showing the 4 most recent of 17 campaigns.
Owners have filed 719 complaints with NHTSA about the 2019 GMC Sierra. The most-reported areas are Engine (319), Power train (144), Service brakes (123). Complaints include 14 reported crashes, 7 reported fires, 15 reported injuries. That is well above the median of 479 complaints across the 17 GMC Sierra model years in our data.
Used-buyer checklist for the 2019 GMC Sierra
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Engine (319 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Transmission & drivetrain (144 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Brakes (2 recall campaigns · 123 owner complaints) — Brake firmly from speed and look for pulling, vibration or a soft pedal; ask for brake service history.
- Electrical system (112 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the GMC Sierra compare to similar pickups? Pickups in our database average around 25 mpg (UK) combined — this model sits close to that average, within 0 mpg. Its 262 g/km CO₂ figure is 21 g/km lower than the 283 g/km average for pickups on this site. This comparison is based on 264 pickups in our dataset.
At 25 mpg (UK) combined it sits close to the 26 mpg average for GMC models in our database. Its 262 g/km CO₂ figure is 10 g/km lower than the 272 g/km GMC average.
Of the 17 GMC Sierra model years we cover, the 2019 ranks 8th for combined fuel economy on its best configuration (25 mpg UK combined, against a high of 31 mpg). See every GMC Sierra year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2019 GMC Sierra
Frequently Asked Questions
What engine does the 2019 GMC Sierra have?
EPA lists 4 engines for the 2019 GMC Sierra: 2.7L 4-cyl turbo, 4.3L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl. The most fuel-efficient configuration pairs the 2.7L 4-cyl turbo with a automatic 8-spd.
What is the fuel economy of the 2019 GMC Sierra?
The most efficient configuration returns around 25 mpg (UK) combined, or 21 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 19 to 25 mpg.
How much does the 2019 GMC Sierra cost to fuel per year?
The US EPA estimates about $3,200 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2019 GMC Sierra have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Does the 2019 GMC Sierra have any recalls?
NHTSA lists 17 safety recall campaigns that include the 2019 GMC Sierra (as of 6 October 2026). Most affected areas: Air bags (5), Tires (3), Seat belts (2). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2019 GMC Sierra?
Among the 719 owner complaints filed with NHTSA, the most-reported areas are Engine (319 complaints), Power train (144 complaints), Service brakes (123 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the GMC Sierra's fuel economy good for a pickup?
It returns around 25 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the pickups we track.