2018 GMC Sierra for sale
None for sale by us right now: rent one for a week first, or ask us to find one. Rated 11.8 to 13.9 L/100 km combined (EPA). 12 NHTSA recall campaigns.
- For sale by us
- 0
- Combined
- 11.8 to 13.9 L/100 km
- Recalls
- 12
For sale
We do not have a 2018 GMC Sierra for sale right now. We are a rental company: rent one for a week to try it, or tell us what you want and we look for one for you.
2018 GMC Sierra specs
| Spec | Powertrain 1 | Powertrain 2 | Powertrain 3 | Powertrain 4 | Powertrain 5 | Powertrain 6 | Powertrain 7 | Powertrain 8 | Powertrain 9 | Powertrain 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Engine | 5.3L 8-cylinder hybrid | 4.3L 6-cylinder | 4.3L 6-cylinder | 5.3L 8-cylinder hybrid | 5.3L 8-cylinder | 5.3L 8-cylinder | 5.3L 8-cylinder | 5.3L 8-cylinder | 6.2L 8-cylinder | 6.2L 8-cylinder |
| Drive | Rear-wheel drive | Rear-wheel drive | Four-wheel drive | Four-wheel drive | Rear-wheel drive | Rear-wheel drive | Four-wheel drive | Four-wheel drive | Rear-wheel drive | Four-wheel drive |
| Transmission | 8-speed automatic | 6-speed automatic | 6-speed automatic | 8-speed automatic | 6-speed automatic | 8-speed automatic | 6-speed automatic | 8-speed automatic | 8-speed automatic | 8-speed automatic |
| Fuel | Hybrid (gas) | Regular gas | Regular gas | Hybrid (gas) | Regular gas | Regular gas | Regular gas | Regular gas | Premium gas | Premium gas |
| City | 13.4 L/100 km | 13.4 L/100 km | 14.1 L/100 km | 14.5 L/100 km | 14.9 L/100 km | 14.9 L/100 km | 15.1 L/100 km | 15.6 L/100 km | 15.8 L/100 km | 15.8 L/100 km |
| Highway | 10.0 L/100 km | 10.0 L/100 km | 10.6 L/100 km | 11.2 L/100 km | 10.8 L/100 km | 10.9 L/100 km | 11.2 L/100 km | 11.8 L/100 km | 11.1 L/100 km | 11.5 L/100 km |
| Combined | 11.8 L/100 km | 11.9 L/100 km | 12.5 L/100 km | 13.0 L/100 km | 13.0 L/100 km | 13.1 L/100 km | 13.2 L/100 km | 13.7 L/100 km | 13.7 L/100 km | 13.9 L/100 km |
| CO₂ | 278 g/km | 278 g/km | 295 g/km | 304 g/km | 305 g/km | 308 g/km | 311 g/km | 324 g/km | 321 g/km | 326 g/km |
| Cost to drive 100 km | $18.29 | $18.45 | $19.38 | $20.15 | $20.15 | $20.31 | $20.46 | $21.24 | $23.98 | $24.33 |
2018 GMC Sierra: every figure
| Figure | Powertrain 1 | Powertrain 2 | Powertrain 3 | Powertrain 4 | Powertrain 5 | Powertrain 6 | Powertrain 7 | Powertrain 8 | Powertrain 9 | Powertrain 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Displacement | 5.3 L | 4.3 L | 4.3 L | 5.3 L | 5.3 L | 5.3 L | 5.3 L | 5.3 L | 6.2 L | 6.2 L |
| Cylinders | 8 | 6 | 6 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| MPG city (US) | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 |
| MPG highway (US) | 24 | 24 | 22 | 21 | 22 | 22 | 21 | 20 | 21 | 20 |
| MPG combined (US) | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 |
| MPG combined (Imperial) (converted from the US figure) | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 20 | 20 | 20 |
| Fuel cost a year (EPA) (EPA: 15,000 miles at its fuel prices) | US$3,350 | US$3,350 | US$3,550 | US$3,700 | US$3,683 | US$3,700 | US$3,783 | US$3,950 | US$4,850 | US$4,850 |
| Fuel cost for 20,000 km (at $1.55 a litre) | $3,658 | $3,690 | $3,876 | $4,030 | $4,030 | $4,062 | $4,092 | $4,248 | $4,796 | $4,866 |
Sources: fuel use, MPG, CO2, electric range, battery, charge time, luggage volume and the annual fuel cost are the US EPA's (fueleconomy.gov). Imperial MPG, litres, inches and pounds are converted from those figures. Figures no free source publishes for this car (power, torque, acceleration, top speed, fuel tank, towing) are left out.
What to check when buying the 2018 GMC Sierra
- NHTSA lists 12 recall campaigns for this model year. Ask the seller for proof each one was fixed; a dealer can check it by the VIN.
- Owners filed 371 complaints with NHTSA, most often about power train (138), engine (81) and service brakes (54). Have those parts checked before you buy.
| Campaign | Date | Component | Summary |
|---|---|---|---|
| 26V325000 | 2026-05-21 | air bags | General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2019 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles. The left-side or right-side roof rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture. |
| 26V166000 | 2026-03-19 | air bags | General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2019 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 Crew Cab vehicles. The left or right-side roof rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may... |
| 25V432000 | 2025-06-26 | air bags | General Motors (GM) is recalling certain 2018 GMC Sierra 1500, 2019 Sierra 2500, 3500, Chevrolet Silverado 3500, and Chevrolet Silverado 2500 and 2018 Chevrolet Silverado 1500 Crew Cab vehicles. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall... |
| 24V756000 | 2024-10-10 | air bags:side/window:curtain:inflator | General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture. |
| 23V047000 | 2023-02-02 | fuel system, diesel:storage:tank assembly | General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank option. The rear fuel tank may collapse and prevent the fuel pump from transferring fuel to the front tank, resulting in an engine stall. |
| 21V496000 | 2021-07-01 | equipment:electrical:engine block heater | General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals... |
| 20V603000 | 2020-10-01 | service brakes, hydraulic:power assist:vacuum | General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output of the mechanical vacuum pump can decrease over time, decreasing the amount of vacuum/power brake assist. |
| 19V761000 | 2019-10-24 | service brakes | General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41... |
| 19V645000 | 2019-09-06 | service brakes, hydraulic:power assist:vacuum | General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time. |
| 19V328000 | 2019-04-25 | engine | General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the... |
| 19V088000 | 2019-02-07 | fuel system, gasoline:storage:tank assembly | General Motors, LLC (GM) is recalling certain 2016-2018 GMC Sierra 3500 and Chevrolet Silverado 3500 trucks equipped with gasoline engines and dual fuel tanks. The fuel-level sensor in the front tank may stick in a low-level position, allowing the rear tank to overfill the front tank. |
| 17V567000 | 2017-09-14 | seat belts:front:retractor | General Motors (GM) is recalling certain 2017-2018 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 trucks. The front seat belt retractor assemblies were built with the incorrect torsion bar. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number... |
Source: NHTSA (US) recall campaigns and owner complaints for this model year.
The 2018 GMC Sierra: before you buy
CarmaCars rents cars and does not sell the 2018 GMC Sierra; this page helps you judge it before you buy one elsewhere. Before buying the 2018 GMC Sierra, read what the figures say and how to try one first.
Before you sign for the Sierra
Owners filed 371 complaints with NHTSA, most often about power train, engine and service brakes; have those parts checked. In Ontario, a used car needs a Safety Standards Certificate to be registered. NHTSA lists 12 recall campaigns for this model; ask the seller for proof each one was fixed. Ask for the service records and check open recalls by the VIN.
Reading the spec sheet
The 5.3L 8-cylinder hybrid with rear-wheel drive is the powertrain to look at. As a hybrid, it does best in stop-and-go traffic, where the electric motor does more of the work. Rear-wheel drive gives balanced handling; in winter, the tires make the biggest difference.
Its combined rating is 11.8 L/100 km, which means roughly 35 litres for 300 km. For 1,000 km, budget about $182.90 at our price setting. At US fuel prices, the EPA estimates US$3,350 a year for 15,000 miles.
Who the Sierra suits
It suits a stretch between cars, by the week or the month. It suits a family trip where everyone and everything fits in one car.
Space and size
Being a pickup truck, it trades parking ease for a cargo bed.
Drive it on your own roads
Drive the Sierra on your commute before you commit to it. A test week in the Sierra tells you more than any review. Load it with your things and park it where you park; then decide.
Choosing the right one
Look at a few listings of the same year and trim to get a feel for fair prices. Set a budget that includes tax, licensing, insurance and the first set of tires. Within the 2018 lineup, trims share powertrains or differ in equipment; the trim pages show which.
Running costs
At our price setting, 100 km costs about $18.29 in fuel. A 1,000 km month costs roughly $182.90 at our price setting. Tires, brakes and batteries are the regular costs to budget for beyond fuel.
Ask us
Ask about renting first, and buy with a clear head.
Rent it for a week before you buy
A week of your own driving tells you more than a test drive: the commute, the parking, the fuel. Rent a 2018 GMC Sierra from us first.
Find me this car
Tell us your budget and when you want to buy; we look for a 2018 GMC Sierra for you and reply within one business day.
Buying the 2018 GMC Sierra
Does CarmaCars sell the 2018 GMC Sierra?
Not right now. CarmaCars rents cars; it sells one only now and then. Tell us what you want and we look for one, or rent one for a week first.
Can I rent a 2018 GMC Sierra before I buy one?
Yes. Request it for a week (or longer, up to 365 days) and drive it as your own; nothing is charged until we confirm and you approve.
Does the 2018 GMC Sierra have recalls?
NHTSA lists 12 recall campaigns for it, in the table on this page. Ask for proof each was fixed.
What does the 2018 GMC Sierra cost in fuel a year?
EPA puts it at US$3,350 a year for 15,000 miles at its fuel prices; at our price setting, 20,000 km cost about $3658.00.
Where do the figures come from?
Fuel use and fuel cost from the US EPA (fueleconomy.gov), dimensions and weight from NHTSA vPIC Canadian specifications, recalls and complaints from NHTSA. We leave out any figure no free source publishes.