The GMC Sierra 1500 IV, specifically the Crew Cab Short Box configuration with the 5.3 EcoTec3 V8 engine paired with an 8-speed automatic transmission and four-wheel drive, represents a significant iteration of GMC’s full-size pickup truck. Produced from 2016 to 2018 as part of the GMTK2XX platform’s facelift, this variant aimed to balance capability, comfort, and efficiency within the highly competitive American truck market. This model year saw updates to the exterior styling, interior features, and technology, building upon the foundation laid by the previous generation. The FlexFuel capability added versatility, allowing operation on gasoline or ethanol blends up to E85.
Technical Specifications
| Brand | GMC |
| Model | Sierra 1500 |
| Generation | Sierra 1500 IV (GMTK2XX, facelift 2016) Crew Cab Short Box |
| Type (Engine) | 5.3 EcoTec3 V8 (355/380 Hp) 4WD 8 Automatic FlexFuel |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg) |
| Fuel consumption (extra urban) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 6.9 kg/Hp, 143.9 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 210.4 Nm/tonne |
| Power | 355 Hp @ 5600 rpm |
| Power per litre | 66.6 Hp/l |
| Power (Ethanol – E85) | 380 Hp @ 5600 rpm |
| Power per litre (Ethanol – E85) | 71.3 Hp/l |
| Torque | 519 Nm @ 4100 rpm (382.79 lb.-ft. @ 4100 rpm) |
| Torque (Ethanol – E85) | 564 Nm @ 4100 rpm |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L83 |
| Engine displacement | 5328 cm3 (325.13 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 96 mm (3.78 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 14.8 l (15.64 US qt | 13.02 UK qt) |
| Kerb Weight | 2467 kg (5438.8 lbs.) |
| Max. weight | 3266 kg (7200.3 lbs.) |
| Max load | 799 kg (1761.49 lbs.) |
| Trunk (boot) space – minimum | 1512 l (53.4 cu. ft.) |
| Fuel tank capacity | 98 l (25.89 US gal | 21.56 UK gal) |
| Permitted trailer load with brakes (12%) | 4127 kg (9098.48 lbs.) |
| Length | 5825 mm (229.33 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1879 mm (73.98 in.) |
| Wheelbase | 3645 mm (143.5 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 226 mm (8.9 in.) |
| Minimum turning circle (turning diameter) | 14.4 m (47.24 ft.) |
| Approach angle | 17.4° |
| Departure angle | 23.2° |
| Ramp-over (brakeover) angle | 19.0° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 330×30 mm |
| Rear brakes | Ventilated discs, 345×20 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/70 R17; 265/70 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
At the heart of this Sierra 1500 variant lies the 5.3-liter L83 EcoTec3 V8 engine. This engine is a member of GM’s small-block V8 family, known for its durability and relatively simple design. The “EcoTec3” designation signifies features aimed at improving fuel efficiency, including direct injection, variable valve timing, and cylinder deactivation. The direct injection system precisely meters fuel into the combustion chambers, enhancing combustion efficiency and power output. The overhead valve (OHV) valvetrain, while traditional, contributes to the engine’s compact size and robust nature. The L83 is capable of running on gasoline or E85 fuel, with a slight power increase when utilizing the ethanol blend. The 8-speed Hydra-Matic automatic transmission was a key upgrade for this generation, offering smoother shifts and improved fuel economy compared to the previous 6-speed unit. Its gear ratios were optimized for both towing and everyday driving.
Driving Characteristics
The 5.3L V8 with the 8-speed automatic provides a comfortable and capable driving experience. While not the quickest Sierra 1500 variant – the 6.2L V8 offered significantly more power – this configuration delivers ample torque for everyday tasks and towing. The automatic transmission generally shifts smoothly, although some drivers noted occasional hunting for the right gear, particularly during highway cruising. The 4WD system provides enhanced traction in inclement weather or off-road conditions. Compared to the manual transmission options, the automatic prioritizes convenience over driver engagement. The weight of the Crew Cab Short Box configuration, combined with the 4WD system, does impact acceleration and fuel economy, but the trade-off is increased stability and capability.
Equipment & Trim Levels
The Crew Cab Short Box 5.3L 4WD typically fell into the mid-range of the Sierra 1500 lineup. Standard features generally included air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and cloth upholstery. Higher trim levels, such as the SLT and Denali, added features like leather upholstery, heated and ventilated seats, a premium sound system, and advanced safety technologies. Optional extras for this variant included a sunroof, navigation system, and various towing packages. The interior design was functional and relatively straightforward, prioritizing durability and ease of use.
Chassis & Braking
The Sierra 1500 IV utilizes a body-on-frame construction, providing a robust platform for hauling and towing. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration balances ride comfort with load-carrying capacity. Braking duties are handled by ventilated disc brakes at all four corners, providing adequate stopping power for the vehicle’s weight. ABS (Anti-lock Braking System) is standard. The rear leaf springs and relatively high ride height contribute to a firm ride, especially when unladen.
Market Reception & Comparison
Critics generally praised the Sierra 1500 IV for its comfortable ride, spacious interior, and capable powertrain options. The 5.3L V8 with the 8-speed automatic was considered a good all-around choice, offering a balance of power, fuel economy, and refinement. Compared to the 4.3L V6, the 5.3L provided a noticeable increase in performance, particularly when towing. However, the 6.2L V8 offered significantly more power for those prioritizing maximum capability. Fuel economy was competitive for a full-size pickup truck, but not class-leading. Reliability was generally good, although some owners reported minor issues with the infotainment system.
Legacy
The GMTK2XX Sierra 1500, and specifically the 5.3L V8/8-speed automatic combination, has proven to be a relatively reliable and durable powertrain. These trucks remain common sights on used car lots today, and well-maintained examples can provide many years of service. The EcoTec3 engine, while not without its quirks, has generally held up well over time. The 8-speed automatic transmission has also proven to be a robust unit. The combination of capability, comfort, and relative affordability has made this Sierra 1500 variant a popular choice among truck buyers, and it continues to hold its value in the used market.
