Pre-Owned 2021 GMC Sierra 1500 SLT / 4WD / X31 OFF-ROAD PACKAGE / TEXAS EDITION SLT PREMIUM PACKAGE / 20" WHEELS
- Price $44,991
See Important Disclosures Here
Dealership Photos
Specifications
- Miles 60,109
- Exterior Satin Steel Metallic
- Interior Jet Black
- Stock Number 5195568A
- VIN 3GTU9DED1MG225197
Vehicle Description
This certified pre-owned 2021 GMC Sierra 1500 SLT comes fully loaded with 4WD, navigation, back up camera, heated and cooled front seats, park assist, wireless Android Auto and Apple CarPlay, remote engine start, 20" wheels and more. It is Satin Steel with a Black leather interior. The Carfax on this vehicle shows just one previous owner and it has been professionally inspected by a Sewell technician. Visit our store to experience Sewell's commitment to treating every customer like a lifelong customer.
Specifications
Entertainment
- 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Audio system feature, 6-speaker system
- Audio system, Premium GMC Infotainment System with 8" diagonal color touch-screen, includes multi-touch display, AM/FM stereo Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (Note: (PZ8) Hitch Guidance with hitch view is included with trim. Includes SiriusXM with 360L.)
- Bluetooth for phone connectivity to vehicle infotainment system
- HD Radio (Standard on vehicles built before 7-12-2021. Certain vehicles built on or after 7-12-2021 will include (RG0) Not Equipped with HD Radio, which removes (U2L) HD Radio. See dealer for details.)
- SiriusXM Radio
- SiriusXM with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.)
- Steering wheel audio controls
- Wireless Phone Projection, for Apple CarPlay and Android Auto
Exterior
- Bumper, front chrome lower
- Bumper, rear chrome with bumper CornerSteps
- CornerStep, rear bumper
- Door handles, chrome
- Fog lamps, LED
- Glass, deep-tinted
- Grille (Chrome surround with high gloss Black mesh and Chrome inserts.)
- Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
- LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
- Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
- Mirror caps, chrome
- Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
- Moldings, window surround, Chrome
- Tailgate and bed rail protection caps, top
- Tailgate, GMC MultiPro Tailgate with six functional load/access features
- Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
- Taillamps, LED signature taillight with LED stop and reverse light
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Tire, spare 265/70R17SL all-season, blackwall
- Tires, 265/65R18SL all-season, blackwall
- Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
- Wheelhouse liners, rear
- Wheels, 18" x 8.5" (45.7 cm x 21.6 cm) 6-spoke machined aluminum with Dark Grey Metallic accents
Interior
- Air conditioning, dual-zone automatic climate control
- Air vents, rear
- Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
- Brake lining wear indicator
- Compass, located in instrument cluster
- Cruise control, steering wheel-mounted
- Defogger, rear-window electric
- Door locks, power
- Driver Information Center, 4.2" diagonal color display includes driver personalization
- Driver memory recalls driver "presets" for power driver seat and outside mirrors
- Exterior Temperature Display, located in radio display
- Floor covering, color-keyed carpeting
- Floor mats, carpeted front (Deleted when (RIA) All-weather floor liner, LPO is ordered or (BKF) Premium Floor Liners are ordered.)
- Floor mats, carpeted rear (Deleted when (RIA) All-weather floor liner, LPO is ordered or (BKF) Premium Floor Liners are ordered.)
- GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
- In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics
- Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
- Keyless Open and Start
- Mirror, inside rearview auto-dimming
- Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
- Power outlet, front auxiliary, 12-volt
- Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
- Power outlet, rear auxiliary, 12-volt
- Remote vehicle starter system
- Seat adjuster, driver 10-way power including lumbar
- Seat adjuster, passenger 10-way power including lumbar
- Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
- Seating, heated driver and front outboard passenger
- Seats, front 40/20/40 split-bench with covered armrest storage and under-seat storage (lockable) (Not available with (PCY) SLT Convenience Package, (PDB) SLT Premium Package, (PDT) SLT Premium Plus Package or (PDW) Texas Edition SLT Premium Plus Package.)
- Steering column, lock control, electrical
- Steering column, manual Tilt-Wheel and telescoping
- Steering wheel, heated
- Steering wheel, leather-wrapped
- Theft-deterrent system, unauthorized entry
- USB Ports (Instrument Panel with bench seat), 2 also includes 1 SD card reader (first row) With bucket seats, USB Ports are located inside console and includes auxiliary jack
- USB ports, dual, charge-only (2nd row)
- Window, power front, passenger express up/down
- Windows, power front, drivers express up/down
- Windows, power rear, express down
Mechanical
- Alternator, 170 amps (Included and only available with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine. Not available with (NHT) Max Trailering Package, (LM2) Duramax 3.0L Turbo-Diesel I6 engine or (VYU) Snow Plow Prep Package.)
- Auto-locking rear differential
- Automatic Stop/Start (Standard on vehicles built before 6-7-2021. Most vehicles built on or after 6-7-2021 that are equipped with a V8 engine and (MQB) 10-speed automatic transmission will have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start and its content. See dealer for details)
- Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine, (L3B) 2.7L Turbo engine and (L87) 6.2L EcoTec3 V8 engine.)
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- Capless Fuel Fill
- Cargo tie downs (12), fixed, rated at 500 lbs per corner
- Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
- Cooling, external engine oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
- Engine, 5.3L EcoTec3 V8 (355 hp [265 kW] @ 5600 rpm, 383 lb-ft of torque [518 Nm] @ 4100 rpm); featuring available Dynamic Fuel Management that enables the engine to operate in 17 different patterns between 2 and 8 cylinders, depending on demand, to optimize power delivery and efficiency (NOTE: Certain 21MY vehicles will include (YK9) Not Equipped with Dynamic Fuel Management.)
- Exhaust, aluminized stainless-steel muffler and tailpipe
- Exhaust, single outlet
- Four wheel drive
- Frame, fully-boxed, hydroformed front section
- GVWR, 7100 lbs. (3221 kg) (Requires Crew Cab 4WD model with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine without (NHT) Max Trailering Package. Requires Crew Cab 2WD model with (L84) 5.3L EcoTec3 V8 engine and (NHT) Max Trailering Package.)
- Pickup bed
- Rear axle, 3.23 ratio (Not available with (NHT) Max Trailering Package.)
- Recovery hooks, front, frame-mounted, Black (Included with 4WD models. Included and only available on 2WD models with (PQB) Driver Alert Package I.)
- Steering, Electric Power Steering (EPS) assist, rack-and-pinion
- Trailer brake controller, integrated
- Transfer case, single speed, electronic Autotrac with push button control (4WD models only)
- Transmission, 8-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Standard on models equipped with (L84) 5.3L EcoTec3 V8 engine.)
Safety
- Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
- Daytime Running Lamps, LED signature lighting
- HD Rear Vision Camera
- Hitch Guidance
- Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
- OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Rear Seat Reminder
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
- Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
- Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire)
Featured Equipment
- 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Air conditioning, dual-zone automatic climate control
- Air vents, rear
- Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
- Audio system feature, 6-speaker system
- Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine, (L3B) 2.7L Turbo engine and (L87) 6.2L EcoTec3 V8 engine.)
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- Bumper, front chrome lower
- Capless fuel fill
- Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
- CornerStep, rear bumper
- Cruise control, steering wheel-mounted
- Defogger, rear-window electric
- Door handles, chrome
- Door locks, power
- Driver Information Center, 4.2" diagonal color display includes driver personalization
- Driver memory recalls driver "presets" for power driver seat and outside mirrors
- Exhaust, aluminized stainless-steel muffler and tailpipe
- Exterior Temperature Display, located in radio display
- FRONT AND REAR PARK ASSIST, ULTRASONIC
- Floor covering, color-keyed carpeting
- Four wheel drive
- Frame, fully-boxed, hydroformed front section
- GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
- Glass, deep-tinted
- HD Rear Vision Camera
- HILL DESCENT CONTROL
- Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
- Hitch Guidance
- Hitch Guidance with hitch view with Image adjustment, Pan/Zoom/Tilt
- Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
- Keyless open and start
- LICENSE PLATE KIT, FRONT
- Mirror caps, chrome
- Mirror, inside rearview auto-dimming
- OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
- Pickup bed
- Power outlet, front auxiliary, 12-volt
- Power outlet, rear auxiliary, 12-volt
- REAR AXLE, 3.23 RATIO
- Rear Seat Reminder
- Remote vehicle starter system
- SLT PREFERRED EQUIPMENT GROUP Includes Standard Equipment
- Seat adjuster, passenger 10-way power including lumbar
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
- Steering column, lock control, electrical
- Steering column, manual Tilt-Wheel and telescoping
- Steering wheel audio controls
- Steering wheel, heated
- Steering wheel, leather-wrapped
- Steering, Electric Power Steering (EPS) assist, rack-and-pinion
- TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL
- Tailgate and bed rail protection caps, top
- Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
- Theft-deterrent system, unauthorized entry
- Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire)
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Tire, spare 265/70R17SL all-season, blackwall
- Trailer brake controller, integrated
- UNIVERSAL HOME REMOTE
- WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER
- Wheelhouse liners, rear
Options
- AIR FILTER, HEAVY-DUTY (Included and only available with (X31) X31 Off-Road Package or (VYU) Snow Plow Prep Package.) (K47)
- ASSIST STEPS, CHROME WHEEL TO WHEEL (Requires Crew Cab model. Included with (PDB) SLT Premium Package, (PDC) Texas Edition SLT Premium Package, (PDT) SLT Premium Plus Package and (PDW) Texas Edition SLT Premium Plus Package. Not available with any other RPO or LPO assist step.) (BVT)
- AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH 8" DIAGONAL COLOR TOUCH-SCREEN, INCLUDES MULTI-TOUCH DISPLAY, AM/FM STEREO Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (Note: (PZ8) Hitch Guidance with hitch view is included with trim. Includes SiriusXM with 360L.) (STD) (IOS)
- CENTER CONSOLE, FLOOR-MOUNTED with cup holders, cell phone storage, power cord management, hanging file folder capability (Included and only available with (PCY) SLT Convenience Package.) (D07)
- DRIVER ALERT PACKAGE I includes (UD5) Front and Rear Park Assist, (UKC) Lane Change Alert with Side Blind Zone Alert and (UFG) Rear Cross Traffic Alert (Includes Perimeter Lighting. Includes (V76) recovery hooks on 2WD models. Included with (PDT) SLT Premium Plus Package or (PDW) Texas Edition SLT Premium Plus Package.) (PQB)
- EMISSIONS, FEDERAL REQUIREMENTS (FE9)
- ENGINE, 5.3L ECOTEC3 V8 (355 hp [265 kW] @ 5600 rpm, 383 lb-ft of torque [518 Nm] @ 4100 rpm); featuring available Dynamic Fuel Management that enables the engine to operate in 17 different patterns between 2 and 8 cylinders, depending on demand, to optimize power delivery and efficiency (STD) (NOTE: Certain 21MY vehicles will include (YK9) Not Equipped with Dynamic Fuel Management.) (L84)
- EXHAUST, DUAL WITH PREMIUM TIPS (Included and only available with (L87) 6.2L EcoTec3 V8 engine or (X31) X31 Off-Road Package.) (N10)
- FRONT AND REAR PARK ASSIST, ULTRASONIC (Included and only available with (PQB) Driver Alert Package I.) (UD5)
- GVWR, 7100 LBS. (3221 KG) (STD) (Requires Crew Cab 4WD model with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine without (NHT) Max Trailering Package. Requires Crew Cab 2WD model with (L84) 5.3L EcoTec3 V8 engine and (NHT) Max Trailering Package.) (C5Y)
- HILL DESCENT CONTROL (Included and only available with (X31) X31 Off-Road Suspension Package.) (JHD)
- JET BLACK, PERFORATED LEATHER-APPOINTED FRONT OUTBOARD SEAT TRIM (H1Y)
- LANE CHANGE ALERT with Side Blind Zone Alert (Included and only available with (PQB) Driver Alert Package I.) (UKC)
- LICENSE PLATE KIT, FRONT (will be forced on orders with ship-to states that require front license plate) (VK3)
- LPO, ALL-WEATHER FLOOR LINER, 1ST AND 2ND ROWS (dealer-installed) (Included with (PDH) GMC Interior Protection Package, LPO or (RFX) X31 Off-Road and Protection Package. Replaces factory floor mats.) (RIA)
- LPO, CONSOLE INSERT ORGANIZER TRAY (Requires (A50) bucket seats. Not available with (S1O) LPO, console-mounted safe.) (S0P)
- LPO, WHEEL LOCKS, SET OF 4 (dealer-installed) (Please note that LPO 22" wheels will include wheel locks without the LPO code (SFE) wheel locks, LPO.) (SFE)
- REAR AXLE, 3.23 RATIO (Not available with (NHT) Max Trailering Package.) (GU5)
- REAR CROSS TRAFFIC ALERT (Included and only available with (PQB) Driver Alert Package I.) (UFG)
- SATIN STEEL METALLIC (Available at extra charge.) (G9K)
- SEATS, FRONT BUCKET with center console (Included and only available with (PCY) SLT Convenience Package, (PDB) SLT Premium Package, (PDT) SLT Premium Plus Package or (PDW) Texas Edition SLT Premium Plus Package.) (A50)
- SEATS, HEATED SECOND ROW OUTBOARD SEATS (Included and only available with (PCY) SLT Convenience Package on vehicles built before 7-26-2021. Certain vehicles built on or after 7-26-2021 will include (RFU) Not Equipped with Heated Second Row Outboard Seats, which removes (KA6) Heated Second Row Outboard Seats. See dealer for details.) Requires a Crew Cab model. *No Longer Factory Orderable, See Dealer for Current Availability* (KA6)
- SEATS, VENTILATED DRIVER AND FRONT PASSENGER (Included and only available with (PCY) SLT Convenience Package.) (KQV)
- SKID PLATES (Included and only available with (X31) X31 Off-Road Package or (VYU) Snow Plow Prep Package.) (NZZ)
- SLT CONVENIENCE PACKAGE includes (A50) bucket seats with (D07) center console, (KQV) ventilated front seats, (A48) rear sliding power window, (UG1) Universal Home Remote, (MCZ) 2 USB ports with auxiliary input (IP Mounted), (MCR) 2 USB Ports/SD Card/Aux Jack (Inside Console with bucket seats) and (KA6) rear heated seats (KA6) Heated Second Row Outboard Seats are included on Crew Cab models built before 7-26-2021. Certain vehicles built on or after 7-26-2021 will include (RFU) Not Equipped with Heated Second Row Outboard Seats, which removes (KA6) Heated Second Row Outboard Seats. See dealer for details.) (Included with (PDB) SLT Premium Package, (PDC) Texas Edition SLT Premium Package, (PDT) SLT Premium Plus Package and (PDW) Texas Edition SLT Premium Plus Package. (PCY)
- SLT PREFERRED EQUIPMENT GROUP includes standard equipment (4SA)
- TEXAS EDITION SLT PREMIUM PACKAGE includes (PCY) SLT Convenience Package, (NZM) 20" Polished aluminum wheels, (BVT) Chrome assist steps and Texas Edition badging. No substitutions except for LPO wheels. (Not available with (PDW) Texas Edition SLT Premium Plus Package, (PDB) SLT Premium Package, (PDY) SLT Preferred Package or (PDJ) Driver Alert Package II. NOTE: (NZM) 20" Polished aluminum wheels can be upgraded to 22" LPO wheels. If 22" LPO wheels are ordered (X31) X31 Off-Road Package or (NHT) Max Trailering Package will not be available. Only available for dealers located in Arkansas, Louisiana, New Mexico, Oklahoma and Texas.) *GROSS* (PDC)
- TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL (Included and only available with 20" or 22" wheels and tires.) (QAQ)
- TIRES, 275/60R20SL ALL-TERRAIN, BLACKWALL (Includes (QAQ) spare tire. Included with (RFX) X31 Off-Road and Protection Package.) (QAE)
- TRANSFER CASE, TWO-SPEED, ELECTRONIC AUTOTRAC with push button control (4WD models only) (Included and only available with (L87) 6.2L EcoTec3 V8 engine or (X31) X31 Off-Road Package.) (NQH)
- TRANSMISSION, 8-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (STD) (Standard on models equipped with (L84) 5.3L EcoTec3 V8 engine.) (MQE)
- UNIVERSAL HOME REMOTE (Included and only available with (PCY) SLT Convenience Package.) (UG1)
- USB PORTS, 2 (FIRST ROW) LOCATED ON INSTRUMENT PANEL (Included and only available with (PCY) SLT Convenience Package.) (MCZ)
- WHEELS, 20" X 9" (50.8 CM X 22.9 CM) POLISHED ALUMINUM (Included with (RFX) X31 Off-Road and Protection Package, (PDB) SLT Premium Package, (PDC) Texas Edition SLT Premium Package, (PDT) SLT Premium Plus Package and (PDW) Texas Edition SLT Premium Plus Package.) (NZM)
- WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER (Included and only available with (PCY) SLT Convenience Package.) (A48)
- X31 OFF-ROAD PACKAGE includes Off-Road suspension, (JHD) Hill Descent Control, (NZZ) skid plates, (K47) heavy-duty air filter and X31 hard badge Includes (NQH) 2-speed transfer case, (XCK) 265/65R18SL all-terrain, blackwall tires and (N10) dual exhaust. (Requires 4WD model, and AT tires. Included with (RFX) X31 Off-Road and Protection Package. Not available with (NHT) Max Trailering Package or 22" LPO wheels. Upgradeable to (NZM) 20" Polished aluminum wheels with (QAE) 275/60R20SL all-terrain, blackwall tires.) (X31)
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Prices do not include additional fees and costs of closing, including government fees and taxes, any finance charges, any dealer documentation fees, any emissions testing fees or other fees. All prices and specifications are subject to change without notice, including to correct typographical errors or omissions. Certain new vehicles advertised may be in transit or not yet at dealer's premises. Vehicle photographs may not represent actual vehicle available for purchase. All advertised vehicles are subject to prior sale and actual dealer availability. Contact dealer for most current information.
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MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the “Fuel Economy” portion of the EPA’s website for details, including a MPG recalculation tool).
The features and options listed are for the new 2021 GMC Sierra 1500 and may not apply to this specific vehicle.