The 2020 GMC Sierra is part of the fourth generation of GMC's full-size pickup truck, introduced for the 2019 model year. Available as a pickup truck, it offers a range of trims including the Sierra, SLE, Elevation, SLT, AT4, and the luxurious Denali. Pricing for the 2020 model typically ranged from approximately $30,000 to over $60,000. The Sierra stands out for its bold styling, innovative MultiPro Tailgate (on select trims), and a focus on upscale comfort and capability, making it a popular choice for those seeking a premium truck experience.
The Good
The 2020 Sierra excels with its robust engine options offering impressive towing and hauling, a refined and quiet cabin for enhanced comfort, and a commanding, upscale design. Its practical appeal lies in its versatility and capability, while its premium features and styling cater to emotional desires for a vehicle that looks and feels sophisticated.
The Bad
Potential buyers should be aware of some reported issues including transmission problems, particularly with the 8-speed automatic. Some owners have also noted electrical glitches and infotainment system unresponsiveness. Fuel economy for some engine configurations might not be as competitive as rivals.
2020 GMC Sierra: Quick Overview
- Engine Options:
- 2.7L Turbo 4-cylinder: 310 hp, 348 lb-ft torque
- 5.3L V8: 355 hp, 383 lb-ft torque
- 6.2L V8: 420 hp, 460 lb-ft torque
- 3.0L Duramax Turbo-Diesel I6: 277 hp, 460 lb-ft torque
- Horsepower: Ranging from 277 hp (Duramax) to 420 hp (6.2L V8)
- Fuel Economy (MPG City/Highway): Varies significantly by engine and drivetrain. For example, the 5.3L V8 4x4 is around 15/19, while the 2.7L Turbo 2WD is approximately 19/22. The Duramax diesel offers better MPG, around 23/33.
- 0-60 Times: Generally in the mid-to-high 5-second range for the V8 engines, and mid-7-second range for the 4-cylinder.
- Towing Capacity: Maximum towing capacity can reach up to 13,400 lbs with the 3.0L Duramax diesel or 6.2L V8, depending on configuration and trailering package.
- Trim-Level Features:
- Sierra: Standard features, basic infotainment.
- SLE: Enhanced interior materials, larger touchscreen, more connectivity options.
- Elevation: Sporty appearance package, body-colored grille and accents.
- SLT: Premium interior, heated and ventilated front seats, more advanced tech.
- AT4: Off-road focused with skid plates, Rancho shocks, hill descent control, and distinctive styling.
- Denali: Top-tier luxury with premium leather, advanced safety features, unique grille, and enhanced comfort appointments.
2020 GMC Sierra Specifications
Vehicle Information
| Year | 2020 |
| Make | GMC |
| Model | Sierra |
| Trim | - |
| Style | - |
| Type | Truck |
| Category | Standard Pickup Truck |
Manufacturing Details
| Made In | Mexico |
| Manufacturing City | SILAO |
Dimensions
| Doors | 4-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 8000 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | 6 |
Engine & Performance
| Engine | L84 Direct Injection DFM, Aluminum GEN 5, VAR 2 |
| Engine Size | 5.3L |
| Engine Cylinders | 8 |
| Transmission | 10-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 6-Speed |
| Drivetrain | Four-Wheel Drive |
Additional Features
| Anti-Brake System | Standard |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
Vehicle History Report
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What Problems Does the 2020 GMC Sierra Have?
The 2020 GMC Sierra, while generally well-received, has had some reported issues. One of the more common complaints revolves around the transmission, particularly the 8-speed automatic transmission. Some owners have experienced rough shifting, hesitation, and even outright failure, especially in models equipped with the 5.3L V8. This has led to concerns about its long-term reliability. Another area of concern for some users is the infotainment system; reports include freezing, unresponsiveness, and connectivity issues. Electrical gremlins, such as faulty sensors or intermittent dashboard warning lights, have also been noted by a segment of owners. While not as widespread, some instances of engine oil consumption have been reported, particularly with the 2.7L turbo engine. Recalls for the 2020 Sierra have included issues such as a faulty brake booster, potential driveshaft separation in certain 4WD models, and incorrect information on child seat labels. It's worth noting that some of these issues may be more prevalent in earlier production runs of the 2020 model year. Long-term reliability is a mixed bag; while the powertrains can be robust when maintained, the transmission and electronic systems are areas to monitor. Thorough pre-purchase inspections are highly recommended, especially for used models, to identify any existing or potential problems.
How long will the 2020 GMC Sierra last?
Based on owner data and typical usage for a full-size truck, a well-maintained 2020 GMC Sierra can reasonably be expected to last between 200,000 to 300,000 miles, or 10 to 15 years of service. Durability is generally strong, especially for the V8 engines and the diesel powertrain, which are known for their longevity. However, the transmission, particularly the 8-speed automatic, can be a point of weakness that may require attention or repair before reaching the upper end of this mileage range. Regular fluid changes for the transmission and engine oil, along with diligent adherence to the manufacturer's maintenance schedule, are crucial for maximizing the truck's lifespan. Issues with the infotainment system and minor electrical components can arise over time but are less likely to impact core mechanical durability.
What Technology & Safety Features are Included?
The 2020 GMC Sierra offers a respectable suite of technology, entertainment, and safety features. Standard infotainment across most trims includes a 7-inch touchscreen with Apple CarPlay and Android Auto integration, Bluetooth, and USB ports. Higher trims, like the SLT and Denali, often upgrade to an 8-inch touchscreen with built-in navigation and a Bose premium audio system. Optional features include a head-up display, wireless charging, and a rear-seat reminder. For driver assistance, the Sierra offers available adaptive cruise control, blind-spot monitoring, lane-departure warning, automatic emergency braking, and a 360-degree camera system, particularly on Denali models. The GMC Pro Safety Plus package bundles many of these aids. In terms of safety, the 2020 Sierra received good crash test ratings from the IIHS, earning a "Top Safety Pick" designation in some configurations, with "Good" ratings in most impact categories. However, its performance in the passenger-side small overlap front test was rated "Acceptable" in certain instances. The NHTSA awarded the 2020 Sierra generally 4 out of 5 stars overall. The available camera systems, including the industry-first carbon-fiber composite bed (optional), and the MultiPro Tailgate add significant utility and tech appeal, enhancing the truck's functionality for both work and leisure.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
2020 GMC Sierra Prices and Market Value
When new, the 2020 GMC Sierra had an MSRP that generally started around $30,000 for base models and could climb upwards of $65,000 for fully-equipped Denali trims. Currently, on the used market, you can find 2020 GMC Sierra models ranging from approximately $25,000 to $50,000, depending heavily on trim level, mileage, condition, and optional features. The Sierra experiences moderate depreciation, typical for the truck segment. Factors significantly affecting its resale value include its robust towing and hauling capabilities, the presence of desirable features like the MultiPro Tailgate or diesel engine, its overall condition, and low mileage. Higher trims like the Denali tend to hold their value better than base models. Regular maintenance and a clean vehicle history report also play a crucial role in maintaining a strong resale value.
2020 GMC Sierra Cost of Ownership
Ownership costs for the 2020 GMC Sierra are moderate to high, typical for a full-size truck. Insurance premiums will vary based on your location, driving record, and chosen trim, but expect them to be higher than for a sedan. Fuel costs depend on your engine choice and driving habits; the 2.7L turbo and Duramax diesel offer better efficiency, while the V8s are thirstier. Routine maintenance, including oil changes and tire rotations, is standard. However, potential transmission repairs or issues with higher-tech features can lead to more significant repair bills. Overall, while not the most economical to own, its strong resale value and capabilities can offset some of the higher running costs for buyers who need its utility.
2020 GMC Sierra Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
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City Mileage
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2020 GMC Sierra Safety Rating
NHTSA
2020 GMC Sierra Insurance
Insurance for a 2020 GMC Sierra is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2020 GMC Sierra Compare to Other Truck?
The 2020 GMC Sierra competes directly with rivals like the Chevrolet Silverado 1500 (its platform sibling), Ford F-150, Ram 1500, and Toyota Tundra.
Performance: The Sierra offers a strong range of powertrains, including potent V8s and an efficient diesel, matching or exceeding competitors in towing and hauling capabilities, especially with its top engines. The Ford F-150 often leads in overall powertrain variety and fuel efficiency.
Features: GMC's Sierra stands out with its innovative MultiPro Tailgate and more premium interior materials, particularly in the Denali trim, aiming for a more upscale experience than the Silverado. The Ram 1500 is often praised for its luxurious interior and smooth ride. The F-150 offers a vast array of tech and advanced driver aids.
Reliability: While GMCs generally have decent reliability, the 2020 Sierra has faced some transmission concerns, which is a notable point when compared to the often-lauded reliability of the Toyota Tundra. However, overall dependability is within the expected range for the segment, with proper maintenance being key.
Price: The Sierra is typically positioned slightly higher in price than the Silverado, reflecting its more premium positioning, and is competitive with similarly equipped F-150 and Ram 1500 trims.
Alternatives: If a more luxurious interior is a priority, the Ram 1500 is a strong contender. For proven long-term reliability and simplicity, the Toyota Tundra is a safe bet. If maximum tech and powertrain innovation are paramount, the Ford F-150 is hard to beat. The Sierra remains an excellent choice for those seeking a blend of capability, premium feel, and innovative features.
Performance: The Sierra offers a strong range of powertrains, including potent V8s and an efficient diesel, matching or exceeding competitors in towing and hauling capabilities, especially with its top engines. The Ford F-150 often leads in overall powertrain variety and fuel efficiency.
Features: GMC's Sierra stands out with its innovative MultiPro Tailgate and more premium interior materials, particularly in the Denali trim, aiming for a more upscale experience than the Silverado. The Ram 1500 is often praised for its luxurious interior and smooth ride. The F-150 offers a vast array of tech and advanced driver aids.
Reliability: While GMCs generally have decent reliability, the 2020 Sierra has faced some transmission concerns, which is a notable point when compared to the often-lauded reliability of the Toyota Tundra. However, overall dependability is within the expected range for the segment, with proper maintenance being key.
Price: The Sierra is typically positioned slightly higher in price than the Silverado, reflecting its more premium positioning, and is competitive with similarly equipped F-150 and Ram 1500 trims.
Alternatives: If a more luxurious interior is a priority, the Ram 1500 is a strong contender. For proven long-term reliability and simplicity, the Toyota Tundra is a safe bet. If maximum tech and powertrain innovation are paramount, the Ford F-150 is hard to beat. The Sierra remains an excellent choice for those seeking a blend of capability, premium feel, and innovative features.
Final Verdict: Is the 2020 GMC Sierra a Good Truck?
The 2020 GMC Sierra is ideal for buyers who want a capable and versatile pickup truck with a more upscale feel than its Chevrolet counterpart. It's a great choice for those who appreciate refined interior materials, a commanding presence, and innovative features like the MultiPro Tailgate. It's worth considering, especially on the used market, as it offers strong value. Buyers prioritizing a luxurious experience would do well with the SLT, AT4, or Denali trims. For those who need consistent, no-frills reliability above all else, rivals like the Toyota Tundra might be a safer long-term bet due to some reported transmission issues with the Sierra. Purchasing a used 2020 Sierra with a thorough inspection and a pre-purchase warranty would be a prudent approach.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.