How much does the 2020 GMC Sierra 1500 cost?

Prices have softened 8.72% compared to this time last year, making it a favorable time to shop this model year.

There are 6,355 listings available, which suggests solid inventory availability.

If you find a listing below $33,680.99, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2020 GMC Sierra 1500 a good car?

Generally — the 2020 GMC Sierra 1500 earns 4.28/5 from owners and 8.33/10 from our experts. The standout strength is Form and function at 10/10.

Owners consistently praise the spacious interior, advanced technology, strong performance, smooth ride, and the range of available options. The truck is also framed as a comfortable, capable choice that blends everyday usability with work-ready utility.

The main trade-offs are that advanced safety features are not standard and the interior design gets mixed feedback. The overview also positions it as especially appealing if you want a truck that can serve as both a commuter and a utility vehicle.

With 31.4% of listings marked as good or great deals, there is still meaningful value in the market if you shop carefully.

Is the 2020 GMC Sierra 1500 reliable?

Owners rate it 4.28/5, a solid signal of long-term satisfaction.

Owner feedback points to a truck that many people count on for strong performance, a spacious cabin, and a generally satisfying ownership experience. The same feedback also mentions some frustration around engine-related issues, including oil burning and recalls, so reliability confidence is not universal.

The expert evaluation also emphasizes straightforward controls and a truck that is built around practical, everyday use. That kind of simplicity can help long-term ownership feel less complicated.

For used buyers, the main risk is that maintenance history and prior repairs matter a lot, especially if you want to avoid expensive surprises.

What should I look for when buying a used 2020 GMC Sierra 1500?

Accident-free inventory is solid at 76.6% — always verify the vehicle history report.

You should still run a vehicle history report on any truck you’re considering, even if the listing looks clean. Prioritize a pre-purchase inspection, especially if the truck has higher mileage, towing use, or signs of hard work. Focus on condition, equipment, and whether the truck has been maintained consistently.

Key things to evaluate:

• Trim level: The Base truck comes with a V6 engine, a 7-inch touchscreen, Apple CarPlay, Android Auto, Bluetooth connectivity, a USB port, and LED light blade headlights. The SLE adds an additional USB port, a WiFi hotspot, a larger 8-inch touchscreen, and remote keyless entry. The Elevation adds heated front seats, remote engine start, and a heated steering wheel, while the Denali adds a head-up display, navigation, and wireless device charging. The AT4 adds all-terrain tires and red tow hooks, plus black leather with brown accents.
• Powertrain: The Sierra offers five engines, including a 4.3-liter V6, a 2.7-liter turbocharged 4-cylinder, a Duramax 3.0-liter turbodiesel, a 5.3-liter V8, and a 6.2-liter V8. The 6.2-liter V8 delivers the strongest acceleration, while the turbodiesel is the most efficient option.
• Safety package: Standard safety features include a reversing camera, traction control, and a full array of front- and side-impact airbags. Available driver-assistance features include forward-collision warning, lane-departure warning, automatic high beams, adaptive cruise control, blind-spot monitoring, lane-keeping assist, and rear cross-traffic alert. Advanced safety features are not standard.
• Infotainment: The Base truck has a 7-inch touchscreen, while the SLE moves to an 8-inch screen. The system supports Apple CarPlay and Android Auto, and the truck also offers wireless charging on higher trims. The interface is described as straightforward and easy to use.
• Fuel efficiency: The AT4 returns 15 mpg city, 19 highway, and 17 combined. The 2.7-liter turbo returns 20/23/21, the turbodiesel with rear-wheel drive returns 23/30/26, and the most efficient V8 is the 5.3-liter with rear-wheel drive at 17/24/20.

Which 2020 GMC Sierra 1500 trim should I buy?

The 2020 GMC Sierra 1500 is offered in 6 trim levels: Base, SLE, Elevation, SLT, Denali, and AT4.

Here's the short version:

• Base trim: It gives you the essentials, but advanced safety features are not standard, so you’ll want to check equipment carefully if driver assistance matters to you.
• Sweet-spot trim: The SLE adds an 8-inch touchscreen, a WiFi hotspot, remote keyless entry, and another USB port, making it a strong value step up.
• Premium/top trim: The Denali adds a head-up display, navigation, wireless device charging, and the most upscale presentation in the lineup.
• Off-road trim: The AT4 adds all-terrain tires, skid plates, upgraded suspension components, hill-descent control, and Rancho off-road shocks, but its ride is rougher on pavement.

The safety package note to keep in mind is that advanced safety features are not standard, so you should verify exactly which driver-assistance items are included on any truck you’re considering.

Is now a good time to buy a used 2020 GMC Sierra 1500?

This is a moderate, selective buyer’s market, so you can shop with some leverage if you’re patient.

• Deal availability: 31.4% of listings are priced as good or great deals.
• Inventory: There are 6,355 listings available.
• Price trend: Prices have softened 8.72% compared with last year.
• Clean inventory: 76.6% of listings are accident-free.

If you find a listing below $33,680.99, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Sierra 1500's resale value?

The current average of $33,675 sits slightly below last year's $36,890.

That price movement suggests the market has already adjusted downward, which can help you buy more confidently now. If you plan to sell later, the softer current pricing means your upside may be more limited unless you buy well and keep the truck in strong condition.

The Sierra’s broad appeal helps support future demand, especially because it blends comfort, capability, and useful technology. Trucks with strong owner satisfaction tend to stay easier to move on the used market.

Vehicles with solid owner satisfaction ratings, like this model year's 4.28/5, tend to retain buyer demand, which supports resale value over time.

Is the 2020 GMC Sierra 1500 safe?

It earns an 8/10 safety score from our experts.

Standard safety features include a reversing camera, traction control, and a full array of front- and side-impact airbags. Available driver-assistance features include forward-collision warning, lane-departure warning, automatic high beams, adaptive cruise control, blind-spot monitoring, lane-keeping assist, and rear cross-traffic alert.

The AT4 test truck came with a vivid surround-view camera, front and rear parking sensors, and a rear camera mirror. That said, advanced safety features are not standard, so you should confirm the exact equipment on any used example.

Should I buy a 2020 GMC Sierra 1500 or consider a different year?

If you're weighing the 2020 against nearby model years, here's how to think about it:

Choose the 2020 if:

• 31.4% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.6% — always verify the vehicle history report.
• Price trend: Prices have softened 8.72% compared with last year.
• Owners rate it 4.28/5 — a solid satisfaction signal.
• It blends everyday comfort, capability, and easy-to-use technology.

Consider the 2019 if:

• At $31,627, the 2019 costs less than the current year's $33,675 average.
• It is a redesigned full-size pickup with a more polished, more capable feel.

Consider the 2021 if:

• At $35,512, the 2021 costs more than the current year's $33,675 average.
• It adds unique features like an optional carbon-fiber composite cargo bed.

The bottom line: the 2020 is the best all-around pick if you want a well-rounded Sierra with strong owner satisfaction and a softer market price than last year. If your priority is saving money, the 2019 is the better value path; if you want newer-year features and don’t mind paying more, the 2021 is worth a look.

These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.