GMC Sierra 1500 2015–2018 car dimensions: 5829 mm long, 2032 mm wide and 1884 mm high. Unladen weight is 2,301 kg. Braked towing is 5,443 kg.
The cabin is quiet with soft-touch surfaces on higher trims and large controls suited for work gloves. Base models have a 4.2-inch color display while SLE and above offer an available or standard 8-inch IntelliLink touchscreen with Bluetooth, USB ports, and Siri Eyes Free. Cruise control is standard. Dual-zone automatic climate control is standard on SLT and Denali and available on SLE. A rear vision camera is standard on SLE, SLT, and Denali. Front and rear park assist is standard on Denali and available via packages on other trims. The Driver Alert Package available on higher trims adds forward collision alert and lane departure warning with Safety Alert Seat. No automatic emergency braking or lane keep assist is offered.
Crew cab models offer a 5-foot-8-inch bed with 53.4 cubic feet of volume or a 6-foot-6-inch bed with 61 cubic feet. The bed includes standard lower tie-downs and available upper adjustable hooks plus an available spray-on liner and under-rail lighting.
Maximum trailering is 12000 pounds when properly equipped with the 6.2-liter V8 and Max Trailering Package on certain 2WD crew cab short box models under SAE J2807 ratings. Other configurations range lower depending on engine, axle, cab, and box, with the 5.3-liter reaching up to 11200 pounds with the package and the 4.3-liter up to 7600 pounds. Payload reaches up to 2270 pounds on select models.
The Max Trailering Package adds a larger rear axle, heavy-duty rear springs, revised shocks, enhanced cooling, and a trailer brake controller. The Z71 package provides reinforced off-road suspension elements. Trailering Package equipment is widely available for work use.
The cabin is quiet thanks to triple door seals and sound-absorbing materials. Seats use dual-firmness foam for lasting support that cuts fatigue on long hauls. Higher trims add leather, heated and cooled front buckets, and multi-way power adjustments with memory. Dual-zone climate is available, and the crew cab rear offers generous legroom for passengers.
EcoTec3 engines with Direct Injection, AFM, and VVT. EPA estimates up to 18 city/24 hwy for 4.3L 2WD
Oil-life monitor system. change oil when indicated or at least yearly
ProGrade includes 2 years/24,000 miles scheduled maintenance with oil changes, tire rotations, and inspections
NHTSA overall 5-star (4-star rollover). IIHS Good in moderate overlap front, side, roof strength, and head restraints
Standard dual-stage front airbags, side-impact, head-curtain airbags, StabiliTrak with rollover mitigation, trailer sway control
Available Driver Alert Package with Forward Collision Alert, Lane Departure Warning, and Safety Alert Seat
Fuel economy varies by engine and drive. The 4.3L V6 is rated 18 city/24 hwy 2WD and 17/22 4WD. The 5.3L V8 is 16/23 2WD and 16/22 4WD. The 6.2L V8 is 15/21. Most are FlexFuel capable. Tank holds 26 gallons.
Servicing relies on the oil-life monitor that tracks conditions and miles. Follow the CHANGE ENGINE OIL SOON message and change within 600 miles, or at least once a year. ProGrade covers the first two years or 24,000 miles of oil changes, rotations, and 27-point inspections. Bumper-to-bumper is 3 years/36,000 miles. powertrain 5 years/100,000 miles.
Safety starts with a strong high-strength steel cab and six airbags. NHTSA gives 5 stars overall for crew cabs with 5 in front and side and 4 in rollover. IIHS rates Good for moderate overlap front, side impact, roof strength, and head restraints/seats. Available package adds camera-based alerts and vibrating Safety Alert Seat. Rear vision camera is standard on most models.
Keep it with regular oil checks, tire pressure monitoring, and following the maintenance schedule for filters and fluids. The durable materials and quiet isolation make daily use straightforward for work or family hauling.
Length 5829 mm, Width 2032 mm, Height 1884 mm, Wheelbase 3645 mm (Sierra 1500 2015–2018)
Sources: manufacturer data, 2015 GMC Sierra 1500 / Sierra Denali Crew Cab Specifications, 2015 GMC Sierra US brochure, The same short-box crew-cab length, width, wheelbase, and 2WD height are repeated in the 2017 GMC Sierra 1500 order guide.