The 2020 GMC Sierra is a pickup truck that came with a choice of 2.7L 4-cyl, 3.0L 6-cyl, 4.3L 6-cyl, 5.3L 8-cyl and 6.2L 8-cyl engines. Even at 6 years old, a damaged or broken-down one still has real value for its parts. Running or not, we'll make you an offer and tow it away for free.
| Body style | Standard Pickup Trucks 2WD, Standard Pickup Trucks 4WD, Special Purpose Vehicle 2WD, Special Purpose Vehicle 4WD |
|---|---|
| Engines | 2.7L 4-cyl, 3.0L 6-cyl, 4.3L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl (turbocharged versions available) |
| Transmissions | Automatic 6-spd, Automatic 8-spd, Automatic 10-spd |
| Drive | Rear-Wheel Drive, 4-Wheel Drive |
| Fuel | Regular Gasoline, Diesel, Premium Gasoline |
| Fuel economy | 14–23 city / 16–30 highway / 15–26 combined MPG |
| EPA annual fuel cost | $3,200–$4,850 a year (EPA estimate at current fuel prices, 15,000 miles) |
| Tailpipe CO₂ | 392–594 grams per mile |
| EPA fuel economy score | 2–5 out of 10 |
| EPA greenhouse gas score | 2–5 out of 10 |
| Curb weight (NHTSA test vehicle) | 5,102–5,146 lb |
| Versions tested by EPA | 26 configurations: Sierra 2WD, Sierra 4WD, Sierra 4WD AT4, Sierra Cab Chassis 2WD, Sierra Cab Chassis 4WD |
| Age | 6 years |
Specs, fuel cost and emissions from the EPA's fueleconomy.gov data; weights from NHTSA crash-test records. Your car's exact equipment may differ.
NHTSA lists 12 safety recalls covering the 2020 GMC Sierra. Open recalls don't stop you from selling or junking the car, but check your VIN at nhtsa.gov/recalls to see which apply to yours.
General Motors, LLC is recalling certain 2020 Chevrolet Silverado 2500, 3500, GMC Sierra 2500, 3500, and 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles that may have been repaired incorrectly under recall 24V797. The transmission control valve may fail and cause the rear wheels to lock up.
Risk: Rear wheel lock up increases the risk of a crash.
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Risk: Rear wheel lock-up can increase the risk of a crash.
General Motors (GM) is recalling certain 2019-2021 GMC Sierra 1500 and Silverado 1500 vehicles equipped with certain accessory road tires and a 17" spare tire. The 17" spare tire provided with the vehicle is not compatible for use with the accessory wheels, which can cause the anti-lock brake system (ABS) to not function properly…
Risk: An ABS system that does not function properly can increase the risk of a crash.
General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for…
Risk: Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.
General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat frame in the front-row center seating…
Risk: If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.
General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500 vehicles. The vehicles may have been manufactured with Continental tires that were overcured.
Risk: Overcured tires may experience a carcass break in the sidewall resulting in a sudden air loss or could develop a belt edge separation which could lead to partial or full tread/belt loss. Either condition increases the risk of a crash.
General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 and 2020 Chevrolet Silverado 2500 trucks. One of the driveshaft joints may not have been properly welded, causing the driveshaft to separate while the vehicle is moving.
Risk: If the driveshaft separates, there may be a loss of propulsion, increasing the risk of crash.
General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehicles. The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could…
Risk: If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles. The bolts used to attach the front and/or rear brake calipers may have not been heat treated and may break under load.
Risk: Broken caliper bolts can reduce brake performance or interfere with wheel rotation and increase the risk of a crash.
General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. The battery positive (B+) cable rings may have been manufactured with excessive glue, potentially causing an intermittent electrical connection between the B+ cable and alternator.
Risk: An intermittent electrical connection between the B+ battery cable and the alternator could cause the vehicle to stall, increasing the risk of a crash. The intermittent connection could also lead to electrical arcing, which could generate s
General Motors LLC (GM) is recalling certain 2020 Cadillac Escalade, Escalade ESV, Chevrolet Camaro, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
Risk: Over-pressurization can crack the fuel pump and cause leaks, increasing the risk of a fire in the presence of an ignition source.
General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2020 Silverado 2500, Silverado 3500, Sierra 2500, and Sierra 3500 vehicles equipped with carpet floor covering. When the front seat belt pretensioners deploy, hot gas may vent through an opening in the pretensioner bracket…
Risk: A vehicle fire could result if materials ignite inside the vehicle.
Owners have filed 479 complaints about the 2020 GMC Sierra with NHTSA. 12 reports involved a crash and 5 reports involved a fire. Owners reported 13 injuries.
Complaints are reports from owners and aren't verified by NHTSA. One complaint can list several components. Mileage is the median odometer reading owners reported for that component.
NHTSA's 5-Star Safety Ratings for the 2020 GMC Sierra, by version tested.
| Version | Overall | Frontal crash | Side crash | Rollover | Rollover risk |
|---|---|---|---|---|---|
| Pu/Cc, 2WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.1% |
| Pu/Rc, 2WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.1% |
| Pu/Ec, 2WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.1% |
| Pu/Cc, 4WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.8% |
| Pu/Ec, 4WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.8% |
| Pu/Rc, 4WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ | 19.8% |
Source: NHTSA 5-Star Safety Ratings (NCAP). Ratings from different model years or rating systems aren't directly comparable.
Manufacturers have filed 1,539 technical service bulletins and communications with NHTSA covering the 2020 GMC Sierra. These are repair instructions for known issues, not recalls.
1 of them is a warranty extension. Warranty extensions mean the manufacturer agreed to cover a specific repair beyond the normal warranty. They rarely still apply to a car this age, but they point to known weak spots.
This document assists GM dealer technicians with diagnosing torque converter concerns to ensure torque converter replacement is necessary. The torque converter part numbe
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
This PI communicates the proper part numbers for transmission connectors and internal harness to prevent confusion when ordering
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Source: NHTSA manufacturer communications (technical service bulletins).
NHTSA opened 3 defect investigations covering the 2020 GMC Sierra.
Loss of motive power due to engine failure
The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Years (MY) 2019-2024 Chevrolet Silverado 150
Loss of motive power due to engine failure
On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM's full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine. These complainants alleged engine bearing failures
Air Bag Malfunction
On April 9, 2021, the Office of Defects Investigations (ODI) opened PE21-010 to investigate instances of air bag malfunction indicator light (MIL) illumination and potential for frontal air bag non-deployment in several vehicles manufactured by General Motors (GM). The vehicles included model year (MY) 2020 through 202
It depends on its condition, whether major parts like the engine, transmission and catalytic converter are still there, and current scrap and parts prices where you live. As a heavier vehicle, its scrap weight adds to the offer. Enter your ZIP code above for a free offer on your specific car.
Yes. We buy 2020 Sierras that don't start, were in an accident, failed inspection or have a blown engine or transmission. Towing is always free.
Yes. Open recalls don't prevent a junk sale. NHTSA lists 12 recalls for the 2020 GMC Sierra; you can check whether any are still open on yours with the VIN lookup at nhtsa.gov/recalls.
Usually the title and a photo ID. Rules differ by state, including what to do with your plates and whether to file a notice of sale. Check our state-by-state car title guides for the official forms.
Data retrieved October 2026.
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