The GMC Sierra 1500 IV, specifically the Crew Cab Short Box configuration with the 5.3 EcoTec3 V8 engine and 8-speed automatic transmission, was a popular full-size pickup truck produced from 2016 to 2018. This iteration represents a facelift of the GMTK2XX platform, building upon the foundation laid by previous Sierra generations. Positioned as a mid-range offering within the Sierra 1500 lineup, it aimed to balance capability, comfort, and fuel efficiency for both work and personal use. 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) 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) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 6.6 kg/Hp, 151.1 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 220.9 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 capacity | 14.8 l (15.64 US qt | 13.02 UK qt) |
| Kerb Weight | 2350 kg (5180.86 lbs.) |
| Max. weight | 3175 kg (6999.68 lbs.) |
| Max load | 825 kg (1818.81 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%) | 4264 kg (9400.51 lbs.) |
| Length | 5825 mm (229.33 in.) |
| Width including mirrors | 2032 mm (80 in.) |
| Height | 1884 mm (74.17 in.) |
| Wheelbase | 3645 mm (143.5 in.) |
| Front track | 1747 mm (68.78 in.) |
| Rear (Back) track | 1716 mm (67.56 in.) |
| Ride height (ground clearance) | 222 mm (8.74 in.) |
| Minimum turning circle (turning diameter) | 14.4 m (47.24 ft.) |
| Approach angle | 17.2° |
| Departure angle | 23.9° |
| Ramp-over (brakeover) angle | 19.2° |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| 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
The heart of this Sierra 1500 variant is the 5.3-liter L83 EcoTec3 V8 engine. This engine is a naturally aspirated, direct-injection powerplant featuring Active Fuel Management (cylinder deactivation) to improve fuel economy. The L83 utilizes a robust cast iron block with aluminum cylinder heads. The direct injection system, coupled with a relatively high 11:1 compression ratio, contributes to both power and efficiency. The overhead valve (OHV) valvetrain, while a more traditional design, is known for its durability and simplicity. The 8-speed Hydra-Matic automatic transmission was a significant upgrade over previous offerings, providing smoother shifts and a wider gear ratio spread for improved acceleration and highway cruising. This transmission is electronically controlled, adapting to driving conditions and driver input.
Driving Characteristics
The 5.3L V8 paired with the 8-speed automatic delivers a comfortable and capable driving experience. While not a performance-oriented setup, the engine provides ample torque for towing and hauling. The automatic transmission is well-tuned for everyday driving, offering smooth and predictable shifts. Compared to the available 6.2L V8, this engine offers less outright power, but it provides better fuel economy. Against the 4.3L V6, the 5.3L offers a noticeable increase in both horsepower and torque, making it a more suitable choice for those regularly needing to tow or carry heavy loads. The gear ratios in the 8-speed transmission are optimized for both acceleration and fuel efficiency, allowing the engine to operate in its most efficient range more often.
Equipment & Trim Levels
The Crew Cab Short Box 5.3L configuration typically came standard with features like air conditioning, power windows and locks, a basic infotainment system with a touchscreen display, and a rearview camera. 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 included a sunroof, navigation system, and various towing packages. Interior upholstery was typically cloth on lower trims and leather on higher trims. Dashboard configurations varied depending on the trim level, with higher trims featuring more premium materials and finishes.
Chassis & Braking
The Sierra 1500 IV utilizes a body-on-frame construction, providing a robust and durable platform. The front suspension features independent coil springs, while the rear suspension employs a traditional leaf spring setup. This configuration is well-suited for handling heavy loads and providing a comfortable ride. Braking duties are handled by ventilated discs at all four corners, with ABS standard. The rear brakes are slightly smaller in diameter than the front brakes. Steering is rack-and-pinion with electric power assist, providing responsive and precise handling.
Market Reception & Comparison
The 5.3L V8 with the 8-speed automatic was generally well-received by critics and consumers. It was praised for its balance of power, fuel efficiency, and reliability. Fuel economy figures were competitive for a full-size pickup truck, although the E85 fuel option could impact overall efficiency depending on fuel prices and availability. Compared to the 6.2L V8, the 5.3L offered a more affordable price point and better fuel economy, making it a popular choice for buyers who didn’t require the maximum amount of power. Reliability reports generally indicated good long-term durability for the L83 engine and Hydra-Matic transmission.
Legacy
The L83 5.3L EcoTec3 V8 has proven to be a relatively reliable powertrain. Used examples are readily available on the market, and with proper maintenance, these engines can provide many years of service. Common maintenance items include regular oil changes, spark plug replacements, and fuel system cleaning. The 8-speed automatic transmission has also demonstrated good durability. The GMTK2XX platform Sierra 1500 remains a popular choice for those seeking a capable and affordable full-size pickup truck, and the 5.3L V8 variant continues to hold its value in the used car market.
