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  • 3/4 Front Glamour 2018 GMC Sierra 2500HD
  • Rear Profile  2018 GMC Sierra 2500HD
  • 90 Degree Profile 2018 GMC Sierra 2500HD
  • Grille  2018 GMC Sierra 2500HD
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On This Page: Specs | Safety

Specs, Warranty & Reliability

The table below shows all 2018 GMC Sierra 2500HD specs by style, including MPG (fuel economy), transmission details, and interior and exterior dimensions. Additionally, find 2018 GMC Sierra 2500HD warranty and reliability information, such as limits on bumper-to-bumper coverage and major components.

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2018 GMC Sierra 2500HD Base 4x2 Regular Cab 8 ft. box 133.6 in. WB2018 GMC Sierra 2500HD Base 4x2 Double Cab 6.6 ft. box 144.2 in. WB2018 GMC Sierra 2500HD Base 4x2 Double Cab 8 ft. box 158.1 in. WB
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  • Overview
    MSRP *$35,000$37,200$37,400
    Invoice *$32,900$34,968$35,156
    EngineStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpmStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpmStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpm
    Transmission6-spd sequential shift control auto w/OD6-spd sequential shift control auto w/OD6-spd sequential shift control auto w/OD
    Bumper to Bumper Months/Miles36/36,00036/36,00036/36,000
  • Powertrain
    EngineStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpmStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpmStandard:6.0L V-8 360 HP 380.0 ft.lbs. @ 4,200 rpmAvailable:6.6L V-8 445 HP 910.0 ft.lbs. @ 1,600 rpm
    Transmission6-spd sequential shift control auto w/OD6-spd sequential shift control auto w/OD6-spd sequential shift control auto w/OD
    AlternatorStandard:150 ampAvailable:220 amp150 amp dualStandard:150 ampAvailable:220 amp150 amp dualStandard:150 ampAvailable:220 amp150 amp dual
    BatteryStandard:720 amp heavy duty with run down protectionAvailable:730 amp heavy duty with run down protection730 amp with run down protection, dual lead acid batteriesStandard:720 amp heavy duty with run down protectionAvailable:730 amp heavy duty with run down protection730 amp with run down protection, dual lead acid batteriesStandard:720 amp heavy duty with run down protectionAvailable:730 amp heavy duty with run down protection730 amp with run down protection, dual lead acid batteries
    Axle RatioStandard:4.10Available:3.73Standard:4.10Available:3.73Standard:4.10Available:3.73
    Recommended Fuel TypeStandard:regular unleadedAvailable:dieselgaseous fuel compatibleStandard:regular unleadedAvailable:dieselgaseous fuel compatibleStandard:regular unleadedAvailable:dieselgaseous fuel compatible
    Fuel Tank36.0 gal.36.0 gal.36.0 gal.
    ExhaustStandard:stainless steelAvailable:stainless steel with polished tailpipe finishStandard:stainless steelAvailable:stainless steel with polished tailpipe finishStandard:stainless steelAvailable:stainless steel with polished tailpipe finish
    Drive Typerear-wheelrear-wheelrear-wheel
    Limited Slip Differentiallimited slip differentiallimited slip differentiallimited slip differential
    Traction ControlABS & drivelineABS & drivelineABS & driveline
  • Steering and Suspension
    Electronic StabilityStabiliTrak w/Proactive Roll AvoidanceStabiliTrak w/Proactive Roll AvoidanceStabiliTrak w/Proactive Roll Avoidance
    Rideheavy dutyheavy dutyheavy duty
    Front Suspensiontorsiontorsiontorsion
    Front Anti-Roll Barfront anti-roll barfront anti-roll barfront anti-roll bar
    Front Springscoilcoilcoil
    Front Shocksgas-pressurizedgas-pressurizedgas-pressurized
    Rear Suspensionrigid axle leafrigid axle leafrigid axle leaf
    Rear Springsleafleafleaf
    Rear Shocksgas-pressurizedgas-pressurizedgas-pressurized
    Steeringre-circulating ballre-circulating ballre-circulating ball
    BrakesDuraLife 4-wheel discDuraLife 4-wheel discDuraLife 4-wheel disc
    Vented Disc Brakesfront and rearfront and rearfront and rear
    WheelsStandard:17.0 " painted steelAvailable:18.0 " painted steel17.0 " machined aluminumStandard:17.0 " painted steelAvailable:18.0 " painted steel17.0 " machined aluminumStandard:17.0 " painted steelAvailable:18.0 " painted steel17.0 " machined aluminum
    Front TiresStandard:LT245/75SR17.0EBSW ASAvailable:LT265/70SR18.0EBSW ATLT265/70QR17.0EBSW ATLT265/70SR18.0EBSW ASStandard:LT245/75SR17.0EBSW ASAvailable:LT265/70SR18.0EBSW ATLT265/70QR17.0EBSW ATLT265/70SR18.0EBSW ASStandard:LT245/75SR17.0EBSW ASAvailable:LT265/70SR18.0EBSW ATLT265/70SR18.0EBSW ASLT265/70QR17.0EBSW AT
    Spare Tire and WheelStandard:full-size steelAvailable:steelfull-sizeStandard:full-size steelAvailable:steelfull-sizeStandard:full-size steelAvailable:steelfull-size
  • Seating and Interior
    Seating CapacityStandard:3Available:2Standard:6Available:35Standard:6Available:35
    Front Seat TypeStandard:40-20-40 split-benchAvailable:bucketStandard:40-20-40 split-benchAvailable:bucketStandard:40-20-40 split-benchAvailable:bucket
    Front Headrestsadjustableadjustableadjustable
    Front Armrestscenter w/storagecenter w/storagecenter w/storage
    Front Driver Seat Direction ControlsStandard:4-wayAvailable:(8-way power)Standard:4-wayAvailable:(8-way power)Standard:4-wayAvailable:(8-way power)
    Front Passenger Seat Direction Controls4-way4-way4-way
    Rear SeatsN/Afull benchfull bench
    Rear HeadrestsN/Aadjustableadjustable
    Seat TrimStandard:clothAvailable:vinylStandard:clothAvailable:vinylStandard:clothAvailable:vinyl
    Headlinerfull clothfull clothfull cloth
    Floor TrimStandard:vinyl/rubberAvailable:carpetStandard:vinyl/rubberAvailable:carpetStandard:vinyl/rubberAvailable:carpet
    Floor MatsAvailable:vinyl/rubber frontAvailable:vinyl/rubber frontrubber front & rearAvailable:vinyl/rubber frontrubber front & rear
  • Comfort and Conveniences
    Vanity Mirrorspassengerpassengerpassenger
    Rearview MirrorStandard:day-nightAvailable:auto-dimming day-nightStandard:day-nightAvailable:auto-dimming day-nightStandard:day-nightAvailable:auto-dimming day-night
    Glove Boxlockinglockinglocking
    Cabback Insulatorcabback insulatorcabback insulatorcabback insulator
    Dome Lightfadefadefade
    Reading Lightsfrontfront & rearfront & rear
    Overhead Consoleminiminimini
    Cup Holderfrontfront and rearfront and rear
    Instrument Panel Storagecovered bincovered bincovered bin
    Seatback StorageAvailable:2Available:2Available:2
    Door Binsdualdualdual
    Rear Door BinsN/Arear door binsrear door bins
    Underseat TrayAvailable:frontAvailable:rearfrontAvailable:rearfront
    Front Air Conditioningmanualmanualmanual
    Rear Heat DuctsN/Aunderseat ductsunderseat ducts
    RadioStandard:GMC Infotainment System AM/FM, clock, seek-scanAvailable:GMC Infotainment System AM/FM, seek-scanclockGMC Infotainment System SiriusXM AM/FM/Satellite, seek-scanStandard:GMC Infotainment System AM/FM, clock, seek-scanAvailable:GMC Infotainment System AM/FM, seek-scanclockGMC Infotainment System SiriusXM AM/FM/Satellite, seek-scanStandard:GMC Infotainment System AM/FM, clock, seek-scanAvailable:GMC Infotainment System AM/FM, seek-scanclockGMC Infotainment System SiriusXM AM/FM/Satellite, seek-scan
    Speakers666
    Radio Theft Deterrentradio theft deterrentradio theft deterrentradio theft deterrent
    Antennafixedfixedfixed
    Cruise Controlwith steering wheel controlswith steering wheel controlswith steering wheel controls
    Door LocksStandard:powerAvailable:power with 2 stage unlockStandard:powerAvailable:power with 2 stage unlockStandard:powerAvailable:power with 2 stage unlock
    Remote Keyless EntryAvailable:keyfob (all doors)Available:keyfob (all doors)Available:keyfob (all doors)
    Rear Child Safety Door LocksN/Arear child safety door locksrear child safety door locks
    Power OutletsStandard:2Available:1Standard:2Available:1Standard:2Available:1
    AC power outletAvailable:AC power outletAvailable:AC power outletAvailable:AC power outlet
    Driver Foot Restdriver foot restdriver foot restdriver foot rest
    Retained Accessory Powerretained accessory powerretained accessory powerretained accessory power
    Entertainment CenterN/AAvailable:entertainment system with DVDAvailable:entertainment system with DVD
    Internet AccessAvailable:GMC 4G LTE internet accessAvailable:GMC 4G LTE internet accessAvailable:GMC 4G LTE internet access
    Instrument Displayanaloganaloganalog
    Tachometertachometertachometertachometer
    Oil Pressure Gaugeoil pressure gaugeoil pressure gaugeoil pressure gauge
    Water Temp Gaugeengine temperature gaugeengine temperature gaugeengine temperature gauge
    Volt Gaugevoltmeter gaugevoltmeter gaugevoltmeter gauge
    Systems Monitorsystems monitorsystems monitorsystems monitor
    Trip Computertrip computertrip computertrip computer
    Trip Odometertrip odometertrip odometertrip odometer
    Steering Wheeltilttilttilt
    Front WindowsStandard:manualAvailable:powerpowerpower
    Rear WindowsN/Apowerpower
    1-Touch OpenAvailable:driver and passengerfront and rearfront and rear
    Tinted WindowsStandard:lightAvailable:deepStandard:lightAvailable:deepStandard:lightAvailable:deep
    Front Windshield Wipersvariable intermittentvariable intermittentvariable intermittent
    Rear DefrosterAvailable:rear defrosterAvailable:rear defrosterAvailable:rear defroster
  • Safety
    Anti-Lock Brakes (ABS)4-wheel anti-lock brakes (ABS)4-wheel anti-lock brakes (ABS)4-wheel anti-lock brakes (ABS)
    Daytime Running Lightsdaytime running lightsdaytime running lightsdaytime running lights
    Center High Mounted Stop Lightcenter high mounted stop lightcenter high mounted stop lightcenter high mounted stop light
    Front Impact AirbagsStandard:driver and passengerAvailable:driver and passenger w/passenger front-impact cancellabledriver and passengerStandard:driver and passengerAvailable:driver and passenger w/passenger front-impact cancellable
    Driver Side Impact Airbagsseat mountedseat mountedseat mounted
    Passenger Side Impact Airbagseat mountedseat mountedseat mounted
    Overhead Airbagcurtain 1st row overhead airbagcurtain 1st and 2nd row overhead airbagscurtain 1st and 2nd row overhead airbags
    Occupancy Sensoroccupancy sensoroccupancy sensoroccupancy sensor
    Side Impact Barsside impact beamsside impact beamsside impact beams
    Seatbelt Pretensionersfrontfrontfront
    Ignition DisablePASS-Key III+PASS-Key III+PASS-Key III+
    Panic AlarmAvailable:panic alarmAvailable:panic alarmAvailable:panic alarm
  • Dimensions and Capacities
    Door Count2 doors4 doors4 doors
    Exterior Cargo Length97.8 "78.9 "97.8 "
    Exterior Length224.4 "230.0 "248.9 "
    Exterior Width80.1 "80.5 "80.5 "
    Exterior Height77.8 "78.1 "77.9 "
    Wheelbase134 "144 "158 "
    Front Tread69 "69 "69 "
    Rear Tread67 "67 "67 "
    Turning Radius22.9 '24.6 '26.5 '
    Gross Vehicle Weight RatingStandard:9,300 lbs.Available:9,900 lbs.10,000 lbs.Standard:9,500 lbs.Available:10,000 lbs.Standard:9,500 lbs.Available:10,000 lbs.
    Curb WeightStandard:5,741 lbs.Available:5,931 lbs.6,671 lbs.Standard:6,094 lbs.Available:7,024 lbs.Standard:6,199 lbs.Available:7,130 lbs.
    Front Gross Axle Weight RatingStandard:4,400 lbs.Available:4,800 lbs.Standard:4,400 lbs.Available:5,200 lbs.Standard:4,400 lbs.Available:5,200 lbs.
    Rear Gross Axle Weight RatingStandard:6,200 lbs.Available:6,700 lbs.6,200 lbs.6,200 lbs.
    PayloadStandard:3,534 lbs.Available:4,044 lbs.3,204 lbs.Standard:3,381 lbs.Available:2,951 lbs.Standard:3,276 lbs.Available:2,845 lbs.
    Max Trailer WeightStandard:14,500 lbs.Available:10,200 lbs.13,000 lbs.Standard:14,400 lbs.Available:14,500 lbs.
    Max Trailer Tongue WeightStandard:21,100 lbs.Available:25,300 lbs.16,600 lbs.Standard:21,100 lbs.Available:25,300 lbs.Standard:21,100 lbs.Available:25,300 lbs.
    Front Legroom45.3 "45.3 "45.3 "
    Rear LegroomN/A34.6 "34.6 "
    Front Headroom42.8 "42.8 "42.8 "
    Rear HeadroomN/A38.7 "38.7 "
    Front Hiproom61.2 "60.7 "60.7 "
    Rear HiproomN/A60.2 "60.2 "
    Front Shoulder Room66.0 "64.8 "64.8 "
    Rear Shoulder RoomN/A64.3 "64.3 "
    Exterior Cargo Width51.0 "51.0 "51.0 "
    Exterior Cargo Volume76.3 cu.ft.61.0 cu.ft.76.3 cu.ft.
  • Exterior Features
    Mud FlapsAvailable:body-colored front and rearfront and rearAvailable:body-colored front and rearfront and rearAvailable:body-colored front and rearfront and rear
    Skid PlatesAvailable:2Available:24Available:24
    PickupStandard:regularAvailable:regular with bed linerStandard:regularAvailable:regular with bed linerStandard:regularAvailable:regular with bed liner
    BumpersStandard:chrome with 2 front tow hook(s)Available:front chrome with 2 front tow hook(s)Standard:chrome with 2 front tow hook(s)Available:front chrome with 2 front tow hook(s)Standard:chrome with 2 front tow hook(s)Available:front chrome with 2 front tow hook(s)
    Rear Step Bumperrear step bumperrear step bumperrear step bumper
    Bodyside MoldingsAvailable:body-coloredAvailable:body-coloredAvailable:body-colored
    Fender FlaresAvailable:body-coloredAvailable:body-coloredAvailable:body-colored
    Grille MoldingsStandard:black w/chrome surroundAvailable:body-coloredbody-colored w/chrome surroundStandard:black w/chrome surroundAvailable:body-coloredbody-colored w/chrome surroundStandard:black w/chrome surroundAvailable:body-coloredbody-colored w/chrome surround
    PaintStandard:clearcoat monotoneAvailable:metallic monotoneStandard:clearcoat monotoneAvailable:metallic monotoneStandard:clearcoat monotoneAvailable:metallic monotone
    Exterior MirrorsStandard:dual manualAvailable:dual power remote heated convex spotterdual manual convex spotterdual power remote heated, convex spotter driverStandard:dual manualAvailable:dual power remote heated convex spotterdual manual convex spotterdual power remote heated, convex spotter driverStandard:dual manualAvailable:dual power remote heated convex spotterdual manual convex spotterdual power remote heated, convex spotter driver
    TraileringAvailable:class IVAvailable:class IVAvailable:class IV
    Trailering HarnessAvailable:trailering harnessAvailable:trailering harnessAvailable:trailering harness
    Trailering HitchAvailable:trailering hitchAvailable:trailering hitchAvailable:trailering hitch
  • Warranty
    Bumper to Bumper Months/Miles36/36,00036/36,00036/36,000
    Major Components Months/MilesStandard:60/60,000Available:60/100,000Standard:60/60,000Available:60/100,000Standard:60/60,000Available:60/100,000
    Corrosion Perforation Months/Miles72/100,00072/100,00072/100,000
    Roadside Assistance Months/MilesStandard:60/60,000Available:60/100,000Standard:60/60,000Available:60/100,000Standard:60/60,000Available:60/100,000
    Maintenance Months/Miles24/24,00024/24,00024/24,000
SELECT STYLESClose
Select up to 3 styles to compare:
Base 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
Base 4x4 Double Cab 8 ft. box 158.1 in. WB
SLT 4x4 Crew Cab 8 ft. box 167.7 in. WB
Base 4x2 Double Cab 8 ft. box 158.1 in. WB
SLT 4x2 Crew Cab 8 ft. box 167.7 in. WB
Base 4x2 Double Cab 6.6 ft. box 144.2 in. WB
SLT 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
SLT 4x2 Double Cab 8 ft. box 158.1 in. WB
Base 4x2 Regular Cab 8 ft. box 133.6 in. WB
SLT 4x2 Double Cab 6.6 ft. box 144.2 in. WB
SLT 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
Base 4x4 Double Cab 6.6 ft. box 144.2 in. WB
SLT 4x4 Double Cab 8 ft. box 158.1 in. WB
Base 4x4 Regular Cab 8 ft. box 133.6 in. WB
SLT 4x4 Double Cab 6.6 ft. box 144.2 in. WB
Base 4x2 Crew Cab 8 ft. box 167.7 in. WB
Base 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
SLE 4x4 Crew Cab 8 ft. box 167.7 in. WB
SLE 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
SLE 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
SLE 4x2 Double Cab 8 ft. box 158.1 in. WB
SLE 4x2 Double Cab 6.6 ft. box 144.2 in. WB
Denali 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
SLE 4x2 Regular Cab 8 ft. box 133.6 in. WB
SLE 4x4 Double Cab 8 ft. box 158.1 in. WB
SLE 4x4 Double Cab 6.6 ft. box 144.2 in. WB
Denali 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
SLE 4x4 Regular Cab 8 ft. box 133.6 in. WB
SLE 4x2 Crew Cab 8 ft. box 167.7 in. WB
Base 4x4 Crew Cab 8 ft. box 167.7 in. WB
CompareCancel

Safety Rating

Below is the 2018 GMC Sierra 2500HD safety rating information and crash results as reported by the National Highway Traffic Safety Administration (NHTSA). The ratings are based on a star system and can vary by style.
StyleFrontal Rating
Side Rating
Base 4x2 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x2 Regular Cab 8 ft. box 133.6 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Double Cab 6.6 ft. box 144.2 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
Base 4x4 Regular Cab 8 ft. box 133.6 in. WB
DriverFront Seat
PassengerRear Seat
Denali 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
Denali 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x2 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x2 Double Cab 6.6 ft. box 144.2 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x2 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x2 Regular Cab 8 ft. box 133.6 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x4 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x4 Double Cab 6.6 ft. box 144.2 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x4 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
SLE 4x4 Regular Cab 8 ft. box 133.6 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x2 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x2 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x2 Double Cab 6.6 ft. box 144.2 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x2 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x4 Crew Cab 6.6 ft. box 153.7 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x4 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x4 Crew Cab 8 ft. box 167.7 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x4 Double Cab 6.6 ft. box 144.2 in. WB
DriverFront Seat
PassengerRear Seat
SLT 4x4 Double Cab 8 ft. box 158.1 in. WB
DriverFront Seat
PassengerRear Seat

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