GMC Yukon 2015-2020 Drivetrain Specifications

The 2015-2020 GMC Yukon offers multiple drivetrain configurations, including rear-wheel drive (RWD) and all-wheel drive (AWD). It is equipped with a 5.3L V8 engine producing 355 horsepower and 383 lb-ft of torque, paired with a 6-speed or 10-speed automatic transmission. The drivetrain includes features like a two-speed transfer case for 4WD models, offering high and low ranges for off-road capability. It is compatible with towing capacities up to 8,500 lbs when properly equipped.

Regular maintenance for the GMC Yukon drivetrain includes checking and replacing transfer case fluid every 50,000 miles, inspecting driveshaft and U-joints for wear, and ensuring proper lubrication of components. Differential fluid should be changed every 30,000 to 50,000 miles. Regularly inspect 4WD systems for leaks or damage and ensure tires are rotated and balanced to prevent uneven wear, which can strain the drivetrain.

To replace drivetrain components, first, safely lift the vehicle using a jack and secure it on stands. For driveshaft removal, disconnect it from the differential and transfer case. For differential or transfer case replacement, drain the fluid, remove mounting bolts, and carefully lower the component. Always refer to the service manual for torque specifications and alignment procedures. Use OEM or compatible parts to ensure proper fit and performance.

Common drivetrain issues include vibrations during acceleration, which may indicate a worn driveshaft or U-joint. Noises from the differential or transfer case could signal low fluid levels or internal damage. Difficulty shifting into 4WD may be due to a faulty actuator or electrical issue. Regular inspections and timely repairs can prevent these problems from escalating.

To optimize drivetrain performance, use high-quality synthetic fluids for the transfer case and differentials. Regularly inspect and maintain 4WD components to ensure smooth operation. Upgrade to performance-grade driveshafts or differential covers for improved durability. Ensure tires are properly inflated and aligned to reduce strain on the drivetrain. Avoid excessive towing loads beyond the vehicle’s rated capacity.