2018 GMC Sierra Accessories & Parts
2018 GMC Sierra Parts
Brakes- Suspension
- Exhaust
- Driveline & Axles
- Engine Cooling
- A/C & Heating
- Air Intake
- Engine
- Steering
- Fuel Delivery
- Transmission
- Starting & Charging
- Emission Control
- Ignition
- Electrical
- Wipers & Washers
- Turbo & Superchargers
- Performance Chips
- Oils, Fluids, Lubricants
- Repair Manuals
- Power Adders
- Racing Gear
2018 GMC Sierra Wheels & Tires
2018 GMC Sierra Exterior Accessories
- Running Boards
- Off-Road Bumpers
- Custom Hoods
- Towing & Hitches
- Body Kits
- Mirrors
- Grille Guards
- Bed Accessories
- Chrome Trim
- Bug Deflectors
- Spoilers
- Commercial Van Equipment
- Custom Grilles
- Tonneau Covers
- Wind Deflectors
- Fender Flares
- Roof Racks
- Winches
- Car Covers
- Car Bras
- Bike Racks
- Light Covers
- Wiper Blades
- Mud Flaps
- License Plates & Frames
- Emblems & Logos
- Armor & Protection
- Custom Horns
- Car Tents
- Car Wraps
- Sunroof Visors
- Spare Tire Covers & Carriers
- Snow Plows
- Auto Detailing
2018 GMC Sierra Automotive Lighting
2018 GMC Sierra Body Parts
2018 GMC Sierra Interior Accessories
2018 GMC Sierra Maintenance
2018 GMC Sierra Audio & Electronics
2018 GMC Sierra Automotive Tools
- Diagnostic & Testing Tools
- Engine Service Tools
- Pullers & Installers
- Suspension & Steering Service Tools
- Wheel & Tire Service Tools
- Oil Change Tools
- A/C Tools & Equipment
- Spark Plug & Ignition Tools
- Cooling System Service Tools
- Automotive Lifts & Stands
- Fuel System Service
- Automotive Paint
- Repair Manuals
- Jacks
- Brake Service Tools
- Lockout Kits
- Exhaust System Service Tools
- Auto Glass Tools
- Electrical System Tools
- Transmission & Drivetrain Service Tools
- EV Charging
- Battery Chargers & Jump Starters
- Creepers
- Key Cutting Machines
- Dollies & Movers
- Auto Detailing
- Dent Repair Tools
- Service Carts
- Vehicle & Parts Protection
Popular Accessories
2018 GMC Sierra Specifications
| Submodel | 1500 | 2500 HD | 3500 HD | ||||
|---|---|---|---|---|---|---|---|
| Engine | 4.3 L | 5.3 L | 6.2 L | 6.0 | 6.6 | 6.0 | 6.6 |
| Engine type | V6 Ecotec V-6 VVT DI | V8 Ecotec V-8 VVT DI | V8 Ecotec V-8 V-8 VVT DI | V8 Vortec V-8 VVT (L96) | V8 Duramax Turbo Diesel (L5P) | V8 Vortec | V8 Duramax Turbo Diesel (L5P) |
| Fuel | Flexible Fuel Vehicle (E85) | GAS Flexible Fuel Vehicle (E85) | GAS | Flexible Fuel Vehicle (E85) | DIESEL (B20 biodiesel capable) | Flexible Fuel Vehicle (E85) | DIESEL |
| Transmission | 6-Speed automatic (6L80) | 8-Speed automatic (8L90) | 6-Speed automatic (6L90) | 6-Speed automatic (Allison® 1000 Series) | 6-Speed automatic | ||
| Gear Ratio | 0.67 | 0.65 | 0.67 | 0.67 | |||
| Drivetrain | 4WD / RWD | 4WD / RWD | 4WD / RWD | ||||
| Power HP | 285 hp @ 5,300 RPM | 355 hp @ 5,600 RPM | 420 hp @ 5,600 RPM | 360 hp @ 5,400 RPM | 445 hp @ 2,800 RPM | 360 | 445 hp @ 2,800 RPM |
| Torque | 305 lb-ft @ 3,900 RPM / 414 Nm | 383 lb-ft @ 4,100 RPM / 519 Nm | 460 lb-ft @ 4,100 RPM / 624 Nm | 380 lb-ft @ 4,200 RPM / 515 Nm | 910 lb-ft @ 1,600 RPM / 1234 Nm | 380 / 515 | 910 lb-ft @ 1,600 RPM / 1234 Nm |
| 0-60 | 7.2s | 6.4s | 5.7s | 6.7s | 6.2s | 6.7s | 6.2s |
| Top Speed | 100 mph | 100 mph | 100 mph | ||||
| Weight | 4500 - 5000 lbs | 5741 - 6242 lbs | 5985 - 6551 lbs | ||||
| GVWR | 6500 - 6800 lbs (Reg Cab) 6900 - 7400 lbs (Double Cab) 6900 - 7400 lbs (Crew Cab) | REGULAR CAB Long Box 9,500/9,900 DOUBLE CAB St Box 9,500/10,000 Lg Box 9,500/10,000 CREW CAB St Box 9,500/10,000 Lg Box 9,900/10,000 | REGULAR CAB SRW 10,700/11,400 DRW 13,500/13,025 DOUBLE CAB SRW 11,000/11,600 DRW 13,025/13,025 CREW CAB SRW 11,000/11,600 DRW 13,025/13,025 | ||||
| Payload Capacity (lbs.) | Regular Cab Standard Box 2WD / 4WD: 1,960 / 1,880 Regular Cab Long Box 2WD / 4WD: 1,980 / 1,920 Double Cab Standard Box 2WD / 4WD: 1,890 / 1,840 Crew Cab Short Box 2WD / 4WD: 1,840 / 1,770 | Regular Cab Standard Box 2WD / 4WD: 1,920 / 1,870 Regular Cab Long Box 2WD / 4WD: 1,980 / 1,930 Double Cab Standard Box 2WD / 4WD: 1,890 - 2,200 / 1,850 - 2,220 Crew Cab Short Box 2WD / 4WD: 1,810 - 2,170 / 1,760 - 2,120 | Double Cab Standard Box 2WD / 4WD: 1,820 - 2,150 / 1,780 - 2,110 Crew Cab Short Box 2WD / 4WD: 1,740 - 2,080 / 1,690 - 2,030 Crew Cab Standard Box 4WD: 1,640 - 1,980 | 2356 - 3534 lbs | 3821 - 7153 | ||
| Towing capacity (lbs.) | Regular Cab Standard Box 2WD / 4WD: 6,000 / 7,600 Regular Cab Long Box 2WD / 4WD: 5,900 / 7,400 Double Cab Standard Box 2WD / 4WD: 5,600 / 7,100 Crew Cab Short Box 2WD / 4WD: 5,500 / 7,000 | Regular Cab Standard Box 2WD / 4WD: 6,900 - 8,900 / 6,600 - 8,600 Regular Cab Long Box 2WD / 4WD: 6,800 - 9,800 / 6,500 - 9,500 Double Cab Standard Box 2WD / 4WD: 6,400 - 11,100 / 6,200 - 10,800 Crew Cab Short Box 2WD / 4WD: 6,400 - 11,000 / 6,100 - 10,700 | Double Cab Standard Box 2WD / 4WD: 9,400 - 12,500 / 9,100 - 11,800 Crew Cab Short Box 2WD / 4WD: 9,300 - 12,500 / 9,100 - 11,700 Crew Cab Standard Box 4WD: 9,000 - 11,700 | 13000 - 18100 (max with Duramax Turbo Diesel ) lbs | 13000 - 23300 lbs lbs | ||
| Wheelbase | Regular cab - 119 in (short box) / 133 in (long box) Double cab - 143.5 in (standard box) Crew cab - 143.5 in (short box) / 153 in (standard) | Regular cab - 133.6 in (long box) Double cab - 144.2 in (standard box) / 158.1 in (long box) Crew cab - 153.7 in (standard box) / 167.7 in (long box) | Regular cab - 133.6 in (long box)
Double cab - 144.2 in (standard box) / 158.1 in (long box) Crew cab - 153.7 in (standard box) / 167.7 in (long box) | ||||
| Bed Length | Regular Cab SB 78.9 in LB 97.8 in Double Cab SB 78.9 in LB 97.8 in Crew Cab SB 69.3 in LB 78.9 in | Regular Cab SB 78.9 in LB 97.8 in Double Cab SB 78.9 in LB 97.8 in Crew Cab SB 78.9 in LB 97.8 in | Regular Cab SB 78.9 in LB 97.8 in Double Cab SB 78.9 in LB 97.8 in Crew Cab SB 78.9 in LB 97.8 in | ||||
| Legroom | Regular Cab Front / Back: 45.3 in / - Double Cab Front / Back: 45.3 in / 34.6 in Crew Cab Front / Back: 45.3 in / 40.9 in | Regular Cab
Front / Back: 45.3 in / - Double Cab Front / Back: 45.3 in / 34.6 in Crew Cab Front / Back: 45.3 in / 40.9 in | Regular Cab Front / Back: 45.3 in / - Double Cab Front / Back: 45.3 in / 34.7 in Crew Cab Front / Back: 45.3 in / 40.9 in | ||||
| Width | 80 in | 80.5 in | 80.5 in | ||||
| Length | Regular cab - 205.6 in (short box) / 224.4 in (long box) Double cab - 230 in (standard) Crew cab - 230 in (short box) / 239.6 in (standard) | Regular cab - 224.4 in (long box) Double cab - 230 in (standard box) / 248.9 in (long box) Crew cab - 239.5 in (standard box) / 258.4 in (long box) | Regular cab - 224.4 in (long box) Double cab - 230 in (standard box) / 248.9 in (long box) Crew cab - 239.5 in (standard box) / 258.4 in (long box) | ||||
| Height | 73.5 in - 74.2 in | Regular cab - 77.3-77.9 in (long box) Double cab - 77.6 in (standard box) / 78.1 in (long box) Crew cab - 77.8 in (standard box) / 78.3 in (long box) | Regular cab - 77.9 in (long box) Double cab - 77.7 in (standard box) / 78.1 in (long box) Crew cab - 77.8 in (standard box) / 78.4 in (long box) | ||||
| Tire Size | LT245/75R17-7.5Jx17 ET31 2.4( tire pressure) LT255/70R17 110S-7.5Jx17 ET31 2.4 (tire pressure) LT265/70R17 112S-8Jx17 ET24 2.4 (tire pressure) LT265/65R18 112S-8Jx18 ET24 2.4 (tire pressure) LT275/55R20 110H-9Jx20 ET24 2.5 (tire pressure) | LT255/70R17 110S-7.5Jx17 ET31 2.4 (tire pressure) LT265/70R17 112S-8Jx17 ET24 2.4 (tire pressure) LT265/65R18 112S-8Jx18 ET24 2.4 (tire pressure) LT265/70R18 113S-8Jx18 ET24 2.4 (tire pressure) LT275/55R20 110H-9Jx20 ET24 2.5 (tire pressure) | LT265/70R17 110S-8Jx17 ET24 2.4 (tire pressure) LT265/65R18 112H-8Jx18 ET24 2.4 (tire pressure) LT265/70R18 113S-8Jx18 ET24 2.4 (tire pressure) LT275/55R20 108H-9Jx20 ET24 2.5 (tire pressure) LT285/45R22 110V-9Jx22 ET24 2.6 (tire pressure) | LT245/75R17 10PR-7Jx17 ET50 LT265/70R17 10PR-7.5Jx17 ET44 LT265/70R18 10PR-8Jx18 ET44 LT265/60R20 10PR-8Jx20 ET44 LT265/50R22 10PR-8.5Jx22 ET40 3.4 / 5.2 (tire pressure) | LT245/75R17 10PR-7.5Jx17 ET44 3.4 / 5.2 (tire pressure) LT265/70R17 10PR-7.5Jx17 ET44 3.4 / 5.2 (tire pressure) LT265/70R18 10PR-8Jx18 ET44 3.4 / 5.2(tire pressure) LT265/60R20 10PR-8.5Jx20 ET44 3.4 / 5.2 (tire pressure) LT275/50R22 10PR-9Jx22 ET40 3.6 / 5.4 (tire pressure) | LT265/70R18 10PR-8Jx18 ET44 LT265/60R20 10PR-8.5Jx20 ET44 | LT265/70R18 10PR-8Jx18 ET44 LT265/60R20 10PR-8.5Jx20 ET44 |
| Wheel Bolt Pattern | 6x139.7 | 8x180 | 8x180 | ||||
| Seats | Regular cab - 3 Double cab - 5 (6) Crew Cab - 5 (6) | Regular cab - 3 Double cab - 5 (6) Crew Cab - 5 (6) | Regular cab - 3 Double cab - 5 (6) Crew Cab - 5 (6) | ||||
| EPA-estimated mpg | 18 city/ 24 hwy/ 21 combi | 16 city/ 23 hwy/ 19 combi | 15 city/ 21 hwy/ 18 combi | 18 hwy/ 15 combi | 12 | 15 | |
| Lights | Headlamps, High-Intensity Discharge (HID), bifunctional with GMC LED signature lighting High-performance LED headlamps with GMC signature lighting | High-Intensity Discharge (HID) projector-beam headlamps | High-Intensity Discharge (HID) projector-beam headlamps. | ||||
| Tank Capacity | 26 gal | 36 gal | 36 gal | ||||
| Price | Base ( Sierra ) from $36,895 SLE from $42,095 SLT from $46,595 Denali from $54,295 | Base from $40,195 SLE from $46,495 SLT from $51,695 Denali from $57,795 | Base from $41,995 SLE from $47,695 SLT from $52,795 Denali from $57,795 | ||||
| Warranty | Basic:
3 Years/36,000 Miles Drivetrain: 5 Years/60,000 Miles Corrosion: 3 Years/36,000 Miles Roadside Assistance: 5 Years/60,000 Miles Maintenance: 2 Years/24,000 Miles | Basic: 3 Years/36,000 Miles Drivetrain: 5 Years/60,000 Miles Corrosion: 3 Years/36,000 Miles Roadside Assistance: 5 Years/60,000 Miles Maintenance: 2 Years/24,000 Miles | Basic:
3 Years/36,000 Miles Drivetrain: 5 Years/60,000 Miles Corrosion: 3 Years/36,000 Miles Roadside Assistance: 5 Years/60,000 Miles Maintenance: 2 Years/24,000 Miles | ||||
| Brakes | 4-wheel disc, 4-wheel antilock with Duralife rotors | 4-wheel disc with 4-wheel antilock (includes Duralife brake rotors) | 4-wheel disc with 4-wheel antilock (includes Duralife brake rotors) | ||||
| Suspension | Front: Coil-Over-Shock Rear: Semi-Elliptical 2-stage Multilieaf springs | Front independent with torsion bars. Includes 33 mm front stabilizer bar Rear multileaf springs, semielliptical with urethane jounce bumpers | Front independent with torsion bars. Includes 33 mm front stabilizer bar
Rear multileaf springs, semielliptical with urethane jounce bumpers | ||||
| Safety / Security | AIR BAGS8 Dual-stage frontal for driver and front passenger with Passenger Sensing System Front-seat-mounted side-impact driver and right front-passenger air bags for thorax and pelvis protection Front and rear head-curtain air bags for all outboard seating positions LED DAYTIME RUNNING LAMPS LANE KEEP ASSIST WITH LANE DEPARTURE WARNING AND FORWARD COLLISION ALERT Included and only available with Enhanced Driver Alert Package. On SLE, requires Regular Cab model. (SLE, SLT, Denali) LOW SPEED FORWARD AUTOMATIC BRAKING Included and only available with Enhanced Driver Alert Package. On SLE, requires Regular Cab model. (SLE, SLT, Denali) REAR VISION CAMERA SYSTEM With dynamic grid lines SAFETY ALERT SEAT Included and only available with Enhanced Driver Alert Package. On SLE, requires Regular Cab model. (SLE, SLT, Denali) THEFT-DETERRENT SYSTEM Unauthorized entry. Included and only available with remote vehicle starter system on SLE. (SLE, Elevation Edition SLE, SLT, All Terrain, Denali) TIRE PRESSURE MONITORING SYSTEM Includes Tire Fill Alert. Does not monitor spare tire. Tire Fill Alert not available with ZW9 Box Delete. | AIR BAGS3 Single-stage frontal for driver and front passenger on all 3500HD models and 2500HD Crew Cab models. Includes dual-stage front-passenger air bag with infant-only Passenger Sensing System on 2500HD Regular Cab and 2500HD Double Cab models with a pickup box. Front-seat-mounted side-impact driver and right front-passenger air bags for thorax and pelvis protection. Included on all 2500HD and select 3500HD models. See your dealer for more details and availability. Front and rear head-curtain air bags for all outboard seating positions. Included on all 2500HD models. See your dealer for more details and availability. DAYTIME RUNNING LAMPS With automatic lamp controlLANE DEPARTURE WARNING AND FORWARD COLLISION ALERT Included and only available with Driver Alert Package. On SLE trim, requires Regular Cab. (SLE, SLT, Denali) SAFETY ALERT SEAT Included and only available with Driver Alert Package. On SLE trim, requires Regular Cab. (SLE, SLT, Denali) THEFT-DETERRENT SYSTEM Unauthorized entry. Included and only available with Remote Vehicle Starter System on SLE trim. (SLE, SLT, All Terrain, Denali) TIRE PRESSURE MONITORING SYSTEM Includes Tire Fill Alert on all single-rear-wheel models. Does not monitor spare tire. | AIR BAGS3 Single-stage frontal for driver and front passenger on all 3500HD models and 2500HD Crew
Cab models. Includes dual-stage front-passenger air bag with infant-only Passenger Sensing System on 2500HD Regular Cab and 2500HD Double Cab models with a pickup box. Front-seat-mounted side-impact driver and right front-passenger air bags for thorax and pelvis protection. Included on all 2500HD and select 3500HD models. See your dealer for more details and availability. Front and rear head-curtain air bags for all outboard seating positions. Included on all 2500HD models. See your dealer for more details and availability. DAYTIME RUNNING LAMPS With automatic lamp controlLANE DEPARTURE WARNING AND FORWARD COLLISION ALERT Included and only available with Driver Alert Package. On SLE trim, requires Regular Cab. (SLE, SLT, Denali) SAFETY ALERT SEAT Included and only available with Driver Alert Package. On SLE trim, requires Regular Cab. (SLE, SLT, Denali) THEFT-DETERRENT SYSTEM Unauthorized entry. Included and only available with Remote Vehicle Starter System on SLE trim. (SLE, SLT, All Terrain, Denali) TIRE PRESSURE MONITORING SYSTEM Includes Tire Fill Alert on all single-rear-wheel models. Does not monitor spare tire. | ||||
| Safety Rating | NHTSA 5 Stars Overall Rating | NHTSA 4 Stars Overall Rating | NHTSA - N/A | ||||