Used 2020 GMC Sierra 1500 for Sale nearPhoenix, AZ

How much does the 2020 GMC Sierra 1500 cost?

Prices have softened 8.37% compared to this time last year, making it a favorable time to shop this model year.

There are 6,398 listings available, which suggests solid inventory for comparison shopping.

If you find a listing below $33,509.69, 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 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. That lines up with the truck’s broader appeal as a pickup that can feel more like an SUV or crossover in daily use.

The main trade-offs are that some drivers mention engine-related frustrations, including oil burning and recalls, and the interior design gets mixed feedback. The overview also frames it as a truck that blends comfort and capability, which makes it especially appealing if you want utility without giving up everyday livability.

With 30.4% of listings marked as good or great deals, you have enough market choice to be selective.

Is the 2020 GMC Sierra 1500 reliable?

Owners rate it 4.28/5, a solid signal of long-term satisfaction. The owner summary also points to a truck that many people find satisfying over time thanks to its spacious cabin, strong performance, and useful technology.

The expert notes reinforce that impression by emphasizing straightforward controls and a truck that is easy to live with day to day. The cost-effectiveness commentary also frames it as a truck built for real-world use, which supports the idea that it can be a practical long-term ownership choice.

Still, some owners report engine-related issues and recalls, so used buyers should pay close attention to maintenance records and any open recall work before committing.

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

Accident-free inventory is solid at 76.1% — always verify the vehicle history report.

You should start with a history report, then prioritize a pre-purchase inspection that checks for accident damage, unresolved recalls, and signs of heavy use. Because some owners mention engine concerns, it is especially smart to focus on service records and how the truck has been maintained.

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. Higher trims add features such as an 8-inch touchscreen, WiFi hotspot, remote keyless entry, heated front seats, remote engine start, a heated steering wheel, and more upscale styling. The AT4 adds all-terrain tires, red tow hooks, black leather with brown accents, and an off-road-oriented setup, while the Denali adds chrome accents, 22-inch wheels, a head-up display, navigation, and wireless device charging.
• Powertrain: You have five engine choices, starting with a 4.3-liter V6, then a 2.7-liter turbocharged 4-cylinder, a Duramax turbodiesel 3.0-liter 6-cylinder, a 5.3-liter V8, and a 6.2-liter V8. The 10-speed automatic and available 4WD are part of the setup, and the diesel is the most efficient version mentioned.
• 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, rear cross-traffic alert, a surround-view camera, front and rear parking sensors, and the rear camera mirror. Advanced safety features are not standard.
• Infotainment: The Base truck has a 7-inch touchscreen, while the SLE moves to an 8-inch touchscreen. The system is described as easy to use, with clear graphics, large icons, sensible menus, and tactile controls. Apple CarPlay and Android Auto are standard on the Base, and the truck also offers wireless charging and multiple USB ports and outlets on higher trims.
• Fuel efficiency: The AT4 returns 15 mpg city, 19 highway, and 17 combined. The 2.7-liter turbo returns 20/23/21, the Duramax 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, AT4.

Here's the short version:

• Base: This is the entry point, but it still gives you a V6 engine, a 7-inch touchscreen, Apple CarPlay, Android Auto, Bluetooth, a USB port, and LED headlights. It makes sense if you want the lowest-cost way into the Sierra lineup and can live without the extra convenience and comfort features found higher up.
• SLE: This trim adds an extra USB port, a WiFi hotspot, an 8-inch touchscreen, and remote keyless entry, plus access to more option packages. It is the best-value trim if you want a more modern daily driver without jumping too far up the price ladder.
• Elevation: This one brings a distinct look with body-color bumpers, door handles, and grille surround, plus 20-inch wheels and black accents. Inside, you get heated front seats, remote engine start, and a heated steering wheel, making it a strong pick if style and comfort matter together.
• SLT: CarGurus recommends this trim. It keeps many of the comfort features you want while adding a more road-friendly setup with more compliant tires and suspension, which makes it the smart choice if you want a well-equipped truck that is easier to live with every day.
• Denali: This is the luxury-focused choice, with plenty of chrome, 22-inch wheels, a head-up display, navigation, and wireless device charging. Choose it if you want the most upscale Sierra experience.
• AT4: This is the off-road-oriented version, with all-terrain tires, red tow hooks, beefed-up skid plates, upgraded suspension components, hill-descent control, and Rancho off-road shocks. It suits you best if you want capability and a more rugged personality, though the ride is rougher on pavement.

Advanced safety features are not standard, so check carefully how each trim is equipped if driver assistance matters to you.

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 carefully and still find worthwhile listings.

• Deal availability: 30.4% of listings are priced as good or great deals.
• Inventory: There are 6,398 listings available.
• Price trend: Prices have softened 8.37% compared with last year.
• Clean inventory: 76.1% of listings are accident-free.

If you find a listing below $33,509.69, 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 $33,508 sits slightly below last year's $36,570.

That softer pricing can help you buy more truck for the money now, but it also means future resale values may not be as strong as they were a year ago. If you plan to sell later, the current market suggests you should pay close attention to trim, condition, and equipment because those factors will matter more when demand is softer.

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, rear cross-traffic alert, a surround-view camera, front and rear parking sensors, and the rear camera mirror.

Advanced safety features are not standard, so you should verify exactly which systems are included on any used example you’re considering.

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:

• 30.4% of listings are priced as good or great deals.
• Accident-free inventory is solid at 76.1% — always verify the vehicle history report.
• Price trend: Prices have softened 8.37% compared with last year.
• Owners rate it 4.28/5 — a solid satisfaction signal.
• It blends comfort, capability, and easy-to-use technology in a way that suits commuting and work.

Consider the 2019 if:

• At $31,364, the 2019 costs less than the current year's $33,508 average.
• It is a redesigned full-size pickup with a more polished, more capable feel.

Consider the 2021 if:

• At $35,218, the 2021 costs more than the current year's $33,508 average.
• It adds unique features like an optional carbon-fiber composite cargo bed.

The bottom line: If you want the best balance of price, comfort, and capability, the 2020 is the primary year to target. If you are more price-sensitive, the 2019 is the better value play, while the 2021 makes sense if you want to spend more for its newer-year features.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.