2015 – 2021 GMC SIERRA 5.3L ENGINE DROP OUT 36K MILES

2015–2021 GMC Sierra 5.3L Engine Drop-Out – 36K Miles
This GMC Sierra 5.3L V8 engine drop-out is intended for compatible engine replacement projects and GM truck builds. The 5.3L V8 is part of GM’s EcoTec3 engine family for many trucks in this model-year range, offering a combination of everyday drivability, useful torque, and modern engine-management technology.
The engine is listed with approximately 36,000 miles. Because engine specifications and electronic systems can vary across 2015–2021 models, buyers should confirm the exact engine code and donor vehicle details before ordering.
Compatible GMC Applications
GMC Sierra 1500
GMC Sierra 1500 SLE
GMC Sierra 1500 SLT
GMC Sierra 1500 Denali, where engine specifications match
Other compatible Sierra 5.3L applications
Compatible Chevrolet Applications
Chevrolet Silverado 1500
Silverado 1500 LT
Silverado 1500 LTZ, where specifications match
Other compatible Silverado 5.3L applications
Popular Custom Applications
GMC and Chevrolet truck restorations
Compatible GM truck replacement projects
C10 and square-body restomods
Custom street trucks and performance builds
Select LS-based swap projects, subject to electronic and mechanical compatibility
Engine Highlights
Engine:
GM 5.3L V8
Model years listed:
2015–2021
Mileage:
Approximately 36,000 miles, as listed
Original application:
GMC Sierra
Engine family:
GM EcoTec3/Gen V, depending on exact engine code
Ideal for:
Compatible truck replacements and custom GM builds