2020 GMC Yukon XL

The 2020 GMC Yukon XL is a full-size SUV known for its spacious interior, comfortable ride, and powerful engine options. It offers ample cargo space, making it a popular choice for families and those needing to transport large items. Available engine options include a 5.3L EcoTec3 V8 engine that produces 355 horsepower and 383 lb-ft of torque, and a 6.2L EcoTec3 V8 engine that produces 420 horsepower and 460 lb-ft of torque. Both engines are paired with a 10-speed automatic transmission. Many owners appreciate the Yukon XL’s towing capacity and luxurious features, while some common dislikes include its large size making it difficult to maneuver in tight spaces and its relatively lower fuel economy.

Engine

5.3L EcoTec3 V8

• Active Fuel Management (AFM) / Dynamic Fuel Management (DFM) Lifter Failure
  • Description/Symptoms: Engine misfires, rough idling, excessive oil consumption, and a check engine light. This is typically caused by a failed lifter due to the AFM/DFM system deactivating cylinders to improve fuel economy.
  • Solution: Replacement of the affected lifters and potentially the camshaft. Some owners choose to disable the AFM/DFM system to prevent future failures.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found

6.2L EcoTec3 V8

• Active Fuel Management (AFM) / Dynamic Fuel Management (DFM) Lifter Failure
  • Description/Symptoms: Engine misfires, rough idling, excessive oil consumption, and a check engine light. This is typically caused by a failed lifter due to the AFM/DFM system deactivating cylinders to improve fuel economy.
  • Solution: Replacement of the affected lifters and potentially the camshaft. Some owners choose to disable the AFM/DFM system to prevent future failures.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found

Transmission

10-Speed Automatic (10L80)

• Harsh Shifting / Shifting Problems
  • Description/Symptoms: The transmission shifts erratically, hesitates, or slams into gears, especially between 1st and 2nd gear, or 3rd and 5th.
  • Solution: In some cases, a software update can resolve the issue. Other times, the valve body needs to be replaced or rebuilt. In severe cases, a full transmission replacement is necessary.
  • Estimated Cost to Fix: $100 - $3,000+
  • Recalls: None Found

Suspension

• Magnetic Ride Control (If Equipped) Failure
  • Description/Symptoms: The ride becomes harsh and bumpy. The vehicle may sag on one side or corner. A warning light may appear on the dash. Failure of the magnetic ride shocks is often the cause.
  • Solution: Replacement of the defective magnetic ride shocks.
  • Estimated Cost to Fix: $800 - $1500+ per shock
  • Recalls: None Found

Electrical

• Infotainment System Freezing / Glitching
  • Description/Symptoms: The infotainment screen freezes, lags, or glitches. Functions like navigation, radio, and climate control become unresponsive.
  • Solution: A software update can often resolve these issues. In some cases, the entire infotainment unit needs to be replaced.
  • Estimated Cost to Fix: $0 - $1,200+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The battery drains quickly, especially when the vehicle is not in use, leading to difficulty starting the car.
  • Solution: Identify and repair the parasitic drain. This could involve replacing a faulty module, fixing wiring issues, or replacing the battery itself.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Cracked Dashboard
  • Description/Symptoms: Cracks appear on the dashboard, especially in warmer climates or vehicles exposed to direct sunlight.
  • Solution: Dashboard replacement or repair.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found

Summary

The 2020 GMC Yukon XL, while generally a reliable vehicle, does have some common issues that prospective buyers should be aware of. The most significant issues revolve around the engine’s AFM/DFM system, which can lead to lifter failure, and the 10-speed transmission, which can experience harsh shifting. These repairs can be costly. Electrical issues, such as infotainment glitches and battery drain, are also relatively common. While not all vehicles will experience these problems, it is wise to be informed and have the vehicle inspected by a trusted mechanic before purchasing.