Makes›GMC›Sierra›2020

2020 GMC Sierra

Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2020 models.

Class
Standard Pickup Trucks 2WD
Body styles
1500 Crew Cab M/Box 2WD, 1500 Crew Cab M/Box 4WD, 1500 Crew Cab S/Box 2WD, 1500 Crew Cab S/Box 4WD
Engines
3.0L 6-cyl turbo, 2.7L 4-cyl turbo, 5.3L 8-cyl, 4.3L 6-cyl
Drivetrain
Rear-Wheel Drive, 4-Wheel Drive
Fuel
Diesel, Regular Gasoline, Premium Gasoline, FFV
MPG (best)
26 combined · 23 city / 30 hwy
Length
231.9–241.3 in
Curb weight
4,619–4,888 lb
NHTSA rating
Not rated
Recalls
16 campaigns

Pros & cons

What's good

  • Excellent fuel economyUp to 26 MPG combined — 32% better than the average 2020 standard pickup truck (19.7 MPG).
  • AWD / 4WD available

Watch out for

No weak spots against similar models in the data.

Calculated from EPA, NHTSA and vPIC data against 4 similar 2020 models — not a review. How we calculate this →

Overview

The 2020 GMC Sierra is a standard pickup truck offered with 4 engines (3.0L 6-cyl turbo, 2.7L 4-cyl turbo, 5.3L 8-cyl and 4.3L 6-cyl) and rear-wheel drive and 4-wheel drive.

It measures about 241 inches long and 81 inches wide on a 157-inch wheelbase, with a curb weight of roughly 4,694 lb (1500 Crew Cab M/Box 2WD).

EPA rates its most efficient version at 26 MPG combined (23 city / 30 highway), 32% better than the 2020 standard pickup truck average of 19.7 MPG, for an estimated $3,200 a year in fuel.

NHTSA has not published a 5-Star overall rating for this model year.

It has 16 recall campaigns on file and owners have filed 624 complaints with NHTSA since 2015, most often about the engine.

What changed for 2020

  • New body dimensions: 15.7 in longer, wheelbase +13.0 in — most likely a redesign or new generation
  • New diesel version
  • Engine added: 3.0L 6-cyl turbo
  • Best combined MPG up from 21 to 26

Compared with 2019; trim, feature and price changes aren't covered. See the 2019 Sierra →

Dimensions & weight

BodyLengthWidthHeightWheelbaseTrack F / RCurb weightWeight F/R
1500 Crew Cab M/Box 2WD241.3 in81.1 in75.6 in156.7 in68.1 / 68.1 in4,694 lb58/42
1500 Crew Cab M/Box 4WD241.3 in81.1 in75.6 in156.7 in68.1 / 68.1 in4,888 lb58/42
1500 Crew Cab S/Box 2WD231.9 in81.1 in75.6 in147.2 in68.1 / 68.1 in4,623 lb58/42
1500 Crew Cab S/Box 4WD231.9 in81.1 in75.6 in147.2 in68.1 / 68.1 in4,835 lb58/42
1500 Double Cab M/Box 2WD231.9 in81.1 in75.6 in147.2 in68.1 / 68.1 in4,619 lb
1500 Double Cab M/Box 4WD231.9 in81.1 in75.6 in147.2 in68.1 / 68.1 in4,835 lb

Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.

Will it fit your garage? Check with your measurements →

Engines, MPG & running costs

VersionEngineTransmissionDriveCity / Hwy / Combvs. classFuel / yrCO₂ g/mi
Sierra 2WD Diesel3.0L 6-cyl turboAutomatic 10-spdRear-Wheel Drive23 / 30 / 26+32%$3,700392
Sierra 4WD Diesel3.0L 6-cyl turboAutomatic 10-spd4-Wheel Drive22 / 26 / 24+29%$4,000427
Sierra 4WD AT4 Diesel3.0L 6-cyl turboAutomatic 10-spd4-Wheel Drive22 / 26 / 24+29%$4,000427
Sierra 2WD2.7L 4-cyl turboAutomatic 8-spdRear-Wheel Drive20 / 23 / 21+7%$3,200421
Sierra 2WD2.7L 4-cyl turboAutomatic 8-spdRear-Wheel Drive19 / 22 / 20+2%$3,350421
Sierra 4WD2.7L 4-cyl turboAutomatic 8-spd4-Wheel Drive19 / 22 / 20+8%$3,350442
Sierra 4WD2.7L 4-cyl turboAutomatic 8-spd4-Wheel Drive19 / 22 / 20+8%$3,350442
Sierra 2WD5.3L 8-cylAutomatic 8-spdRear-Wheel Drive17 / 24 / 20+2%$3,350448
Sierra 2WD5.3L 8-cylAutomatic 8-spdRear-Wheel Drive17 / 23 / 19-4%$3,550463
Sierra 4WD5.3L 8-cylAutomatic 10-spd4-Wheel Drive16 / 22 / 19+2%$3,550479
Sierra 4WD5.3L 8-cylAutomatic 8-spd4-Wheel Drive16 / 22 / 18-3%$3,700490
Sierra 4WD AT45.3L 8-cylAutomatic 8-spd4-Wheel Drive16 / 21 / 18-3%$3,700486
Sierra 4WD AT45.3L 8-cylAutomatic 10-spd4-Wheel Drive16 / 21 / 18-3%$3,700494
Sierra 2WD4.3L 6-cylAutomatic 6-spdRear-Wheel Drive16 / 21 / 17-14%$3,950523
Sierra 2WD5.3L 8-cylAutomatic 6-spdRear-Wheel Drive15 / 21 / 17-14%$3,950524
Sierra 4WD6.2L 8-cylAutomatic 10-spd4-Wheel Drive15 / 20 / 17-9%$4,850525
Sierra 4WD AT46.2L 8-cylAutomatic 10-spd4-Wheel Drive15 / 19 / 17-9%$4,850515
Sierra 4WD5.3L 8-cylAutomatic 6-spd4-Wheel Drive15 / 20 / 17-9%$3,950530
Sierra 4WD4.3L 6-cylAutomatic 6-spd4-Wheel Drive15 / 20 / 17-9%$3,950532
Sierra Cab Chassis 2WD4.3L 6-cylAutomatic 6-spdRear-Wheel Drive15 / 19 / 17-21%$3,950523
Sierra 2WD FFV5.3L 8-cylAutomatic 6-spdRear-Wheel Drive15 / 19 / 16-19%$4,200545
Sierra 4WD AT45.3L 8-cylAutomatic 6-spd4-Wheel Drive14 / 18 / 16-14%$4,200556
Sierra 4WD FFV5.3L 8-cylAutomatic 6-spd4-Wheel Drive14 / 19 / 16-14%$4,200549
Sierra Cab Chassis 4WD4.3L 6-cylAutomatic 6-spd4-Wheel Drive14 / 16 / 15–$4,450594
Sierra Cab Chassis 4WD5.3L 8-cylAutomatic 6-spd4-Wheel Drive14 / 17 / 15–$4,450593
Sierra Cab Chassis 2WD5.3L 8-cylAutomatic 6-spdRear-Wheel Drive14 / 18 / 15-30%$4,450582
5/10EPA fuel economy score (best version)
5/10EPA greenhouse gas score
Spend $4,000Fuel over 5 years vs. average new car
19.7 MPG2020 Standard Pickup Trucks 2WD average

EPA estimates; "vs. class" is combined MPG against the 2020 EPA class average. How we calculate this →

Safety ratings & technology

NHTSA has not published 5-Star ratings for the 2020 GMC Sierra.

Similar 2020 standard pickup trucks

ModelBest MPG / rangeNHTSA overallRecalls
2020 GMC Sierra (this car)26 MPGNot rated16
2020 Chevrolet Silverado27 MPG★★★★★18
2020 Ram 150026 MPG★★★★★14
2020 Roush Performance F15013 MPGNot rated0
2020 Jeep Gladiator Pickup19 MPGNot rated0

Recalls (16)

Power Train › Automatic Transmission › Control Module › Software · Feb 12, 2026

NHTSA campaign 26V083000 · 1,055 vehicles

Problem
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.
Fix
Dealers will inspect the vehicles and update the transmission control software, free of charge. Owner notification letters were mailed March 6, 2026. Owners may contact GMC customer service at 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252516560. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 12, 2026.
Power Train › Automatic Transmission › Fluid/Lubricant › Valves/Valve Body · Oct 24, 2024

NHTSA campaign 24V797000 · 463,295 vehicles

Problem
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.
Fix
Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
Latches/Locks/Linkages › Tailgate › Latch · Feb 1, 2024

NHTSA campaign 24V060000 · 570,434 vehicles

Problem
General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.
Risk
An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.
Fix
Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N232426400.
Tires › Temporary/Emergency Spare Tire · Dec 16, 2021

NHTSA campaign 21V985000 · 626 vehicles

Problem
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 under certain conditions.
Risk
An ABS system that does not function properly can increase the risk of a crash.
Fix
Dealers will provide a new 17" spare tire and wheel assembly that is compatible with the accessory wheels, free of charge. Dealers will also apply a new spare tire information label, and provide owners with an owner's manual insert clarifying which spare tire to use with the accessory road tires and with the 17" original tires. Owner notification letters were mailed February 7, 2022. Owners may contact GM customer service at 1-800-462-8782 or GMC customer service at 1-800-462-8782. GM's number for this recall is N212346510.
Tires › Temporary/Emergency Spare Tire · Jul 29, 2021

NHTSA campaign 21V578000 · 86 vehicles

Problem
General Motors, LLC. (GM) is recalling certain 2020-2021 Chevrolet Silverado 2500 and GMC Sierra 2500 vehicles equipped with a 17" spare tire (RPO ZHQ or ZXT) and either the 20" accessory road tire (RPO REM) or the 18" accessory road tire (RPO Q2V). Operating the spare tire with other 20" or 18" tires can prevent the Anti-Lock Braking System (ABS) from engaging.
Risk
An ABS system that cannot control the rear wheels independently increases the risk of a crash.
Fix
Dealers will provide the appropriate spare tire and apply a new spare tire information label, free of charge. Owner notification letters were mailed on October 18, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; GMC customer service at 1-800-462-8782. GM's number for this recall is N212329780.
Tires · Feb 25, 2021

NHTSA campaign 21V115000 · 33,838 vehicles

Problem
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 various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
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.
Fix
GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at 1-888-988-7267, Buick customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212329050.
Seat Belts › Critical Fasteners · Dec 17, 2020

NHTSA campaign 20V792000 · 624,216 vehicles

Problem
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 position.
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.
Fix
GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began January 26, 2021. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202314670.
Tires · Nov 5, 2020

NHTSA campaign 20V684000 · 7,516 vehicles

Problem
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.
Fix
GM will notify owners, and dealers will inspect vehicles and replace tires that have DOT number and production mold number combinations identified by Continental, free of charge. The recall began December 17, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202319030.
Power Train › Driveline › Driveshaft · Oct 22, 2020

NHTSA campaign 20V650000 · 42 vehicles

Problem
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.
Fix
GM will notify owners, and dealers will replace the driveshaft, free of charge. The recall is expected to begin December 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N202314870.
Air Bags › Side/Window › Curtain › Inflator · Jul 30, 2020

NHTSA campaign 20V446000 · 769 vehicles

Problem
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 separate from the inflator during air bag deployment.
Risk
If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
Fix
GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge. The recall began September 3, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number for this recall is N202305380.
Latches/Locks/Linkages › Hood › Latch · Jun 4, 2020

NHTSA campaign 20V324000 · 272 vehicles

Problem
General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles previously recalled under 20V-142. Some of the vehicles in 20V-324 were not part of Recall 20V-142 but received defect parts during another service (typically during collision repair). The hood-latch striker wires on replacement hoods installed for Safety Recall 20V-142 may not have been heat-treated properly, possibly causing them to fracture.
Risk
If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
Fix
GM will notify owners, and dealers will replace the hood assembly, free of charge. For hoods sold over the counter, dealers will contact customers with instructions for hood replacement. The recall began July 7, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N202306490.
Latches/Locks/Linkages › Hood › Latch · Mar 12, 2020

NHTSA campaign 20V142000 · 1,909 vehicles

Problem
General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The hood-latch striker wires may not have been heat-treated properly, possibly causing them to fracture.
Risk
If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
Fix
GM will notify owners, and dealers will replace the hood assembly, free of charge. The recall began April 13, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192284960.
Service Brakes, Hydraulic › Foundation Components › Disc › Caliper · Feb 27, 2020

NHTSA campaign 20V116000 · 20,352 vehicles

Problem
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.
Fix
GM will notify owners, and dealers will replace the brake caliper bolts, free of charge. The recall began March 23, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-866-522-9559. GM's number for this recall is N202294420.
Electrical System › 12v/24v/48v Battery › Cables · Dec 12, 2019

NHTSA campaign 19V888000 · 350,371 vehicles

Problem
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 sufficient heat to damage surrounding material, increasing the risk of a fire.
Fix
GM will notify owners, and dealers will inspect for the presence of glue or other contamination at the B+ cable attachment to the alternator and clean the connection and reattach the B+ cable connection, as necessary. If arcing has damaged the cable, nut, or alternator, the dealer will replace the damaged components. All services will be performed free of charge. GM issued owners an interim notification on February 4, 2020. GM issued second notice and the recall began March 9, 2019. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192273510.
Fuel System, Gasoline › Delivery › Fuel Pump · Nov 21, 2019

NHTSA campaign 19V837000 · 502 vehicles

Problem
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.
Fix
GM will notify owners, and dealers will replace the fuel pump, free of charge. The recall began December 18, 2019. Owners may contact Cadillac customer service at 1-800-333-4223, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-888-988-7267. GM's number for this recall is N192283991.
Seat Belts › Pretensioner · Nov 14, 2019

NHTSA campaign 19V814000 · 556,399 vehicles

Problem
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, possibly igniting the carpet.
Risk
A vehicle fire could result if materials ignite inside the vehicle.
Fix
GM will notify owners, and dealers will close off the opening in the pretensioner bracket, free of charge. The recall began December 13, 2019. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192270600.
Check your VIN for open recalls at NHTSA ↗

Not every 2020 GMC Sierra is affected — only a VIN check confirms your car.

Owner-reported problems

624Complaints to NHTSA since 2015
17Involved a crash
10Involved a fire
18Injuries reported
31,800 miTypical mileage at failure
Engine266
Power Train142
Electrical System99
Service Brakes70
Unknown Or Other68
Steering44
Fuel/Propulsion System33
Structure › Body21
Complaints received per month (last 24 months with reports)
24/11: 524/12: 1025/01: 1825/02: 1925/03: 2425/04: 2125/05: 4225/06: 2425/07: 1025/08: 825/09: 1525/10: 1625/11: 2225/12: 1426/01: 1726/02: 1826/03: 2326/04: 1326/05: 1026/06: 1126/07: 426/08: 1726/09: 1926/10: 1724/1125/0225/0525/0825/1126/0226/0526/08max 42

Unverified owner reports; best-sellers collect more.

Used 2020 GMC Sierra buyer's checklist

  1. Run the VIN at nhtsa.gov/recalls. 16 recalls this year — ask for proof of repairs.
  2. Engine — 266 owner reports. Cold-start the engine, listen for knocking, and watch for warning lights or hesitation on acceleration.
  3. Power Train — 142 owner reports. Test-drive through all gears, including reverse; note slipping, harsh or delayed shifts.
  4. Electrical System — 99 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
  5. Mileage to watch. Owners typically reported problems around 31,800 miles; ask what was repaired near that point.
  6. Before you pay: service records, a history report and an independent inspection.

Generated by DecodedCars from NHTSA recalls and owner complaints for the 2020 GMC Sierra. Not a substitute for a professional inspection.

Other Sierra years

Compare all years →
YearMPG (best)LengthOverallRecallsComplaints
2026 Sierra25241.3 inNot rated6169
2025 Sierra26241.3 inNot rated4178
2024 Sierra25233.1 inNot rated8538
2023 Sierra26229.5 inNot rated4558
2022 Sierra26241.3 inNot rated8674
2021 Sierra26241.3 inNot rated10668
2019 Sierra21225.6 inNot rated17729
2018 Sierra20235.4 inNot rated12371
2017 Sierra20235.4 inNot rated11481
2016 Sierra20235.4 inNot rated13457
2015 Sierra20235.4 inNot rated23915
2014 Sierra20235.4 inNot rated22814

Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or GMC. How we calculate this →