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2015 GMC Yukon XL

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By Research the Car 5 min read

The 2015 GMC Yukon XL is a full-size SUV known for its spaciousness, towing capability, and comfortable ride. Engine options include the 5.3L EcoTec3 V8 (355 hp, 383 lb-ft torque) and the 6.2L EcoTec3 V8 (420 hp, 460 lb-ft torque). Both engines are paired with a 6-speed automatic transmission (6L80). People appreciate the Yukon XL’s ample cargo space, strong engine performance, and quiet cabin. Common complaints include the large size making it difficult to maneuver in tight spaces, and the fuel economy of the V8 engines. The Magnetic Ride Control suspension is also a common point of failure in the vehicle.

Engine

5.3L EcoTec3 V8

  • Active Fuel Management (AFM) Lifter Failure
    • Description/Symptoms: The AFM system deactivates cylinders to improve fuel economy. Lifter failure can cause misfires, rough running, and engine knocking. Often accompanied by a check engine light.
    • Solution: Replace the failed lifters. It is highly recommended to replace all lifters and the lifter tray.
    • Estimated Cost to Fix: $2,500 - $4,500+
    • Recalls: None Found
  • Excessive Oil Consumption
    • Description/Symptoms: Higher than normal oil usage between oil changes. Can be caused by worn piston rings, valve seals, or AFM system issues.
    • Solution: Perform an oil consumption test to determine the cause. Depending on the cause, solutions can range from replacing valve seals to replacing the piston rings or entire engine in severe cases.
    • Estimated Cost to Fix: $500 - $7,000+ depending on the cause and severity
    • Recalls: None Found
  • Purge Valve Failure
    • Description/Symptoms: Purge valve gets stuck open causing the vehicle to run lean.
    • Solution: Replace the purge valve.
    • Estimated Cost to Fix: $100 - $300
    • Recalls: None Found

6.2L EcoTec3 V8

  • Active Fuel Management (AFM) Lifter Failure
    • Description/Symptoms: Similar to the 5.3L, the AFM system can lead to lifter failure, causing misfires, rough running, and engine knocking.
    • Solution: Replace the failed lifters. It is highly recommended to replace all lifters and the lifter tray.
    • Estimated Cost to Fix: $2,500 - $4,500+
    • Recalls: None Found
  • Excessive Oil Consumption
    • Description/Symptoms: Higher than normal oil usage between oil changes. Can be caused by worn piston rings, valve seals, or AFM system issues.
    • Solution: Perform an oil consumption test to determine the cause. Depending on the cause, solutions can range from replacing valve seals to replacing the piston rings or entire engine in severe cases.
    • Estimated Cost to Fix: $500 - $7,000+ depending on the cause and severity
    • Recalls: None Found
  • Purge Valve Failure
    • Description/Symptoms: Purge valve gets stuck open causing the vehicle to run lean.
    • Solution: Replace the purge valve.
    • Estimated Cost to Fix: $100 - $300
    • Recalls: None Found

Transmission

6L80 6-Speed Automatic

  • Harsh Shifting/Slipping
    • Description/Symptoms: Rough or delayed shifting, especially between 1st and 2nd gear. Transmission may slip or shudder during acceleration.
    • Solution: In some cases, a software update/reprogramming of the transmission control module (TCM) can resolve the issue. More severe cases may require valve body replacement or a full transmission rebuild.
    • Estimated Cost to Fix: $150 (reprogram) - $4,000+ (rebuild)
    • Recalls: None Found
  • Torque Converter Shudder
    • Description/Symptoms: Vibration or shudder felt at highway speeds, especially under light acceleration. Often caused by torque converter clutch failure.
    • Solution: Replace the torque converter and flush the transmission fluid. In some cases, a full transmission rebuild may be necessary.
    • Estimated Cost to Fix: $800 - $3,000+
    • Recalls: None Found

Suspension

  • Magnetic Ride Control (MRC) Shock Absorber Failure
    • Description/Symptoms: Leaking shock absorbers, poor ride quality, clunking noises, and a “Service Ride Control” message on the dashboard. The MRC shocks are prone to failure.
    • Solution: Replace the failed MRC shock absorbers. Replacing both shocks on the affected axle is recommended.
    • Estimated Cost to Fix: $1,000 - $2,000+ per axle
    • Recalls: None Found
  • Air Suspension Compressor Failure (if equipped)
    • Description/Symptoms: Rear of the vehicle sags, compressor runs constantly or not at all, “Service Ride Control” message on the dashboard.
    • Solution: Replace the air suspension compressor.
    • Estimated Cost to Fix: $500 - $1,200+
    • Recalls: None Found

Electrical

  • Battery Drain
    • Description/Symptoms: Battery drains overnight or after a short period of being parked, requiring frequent jump starts. Can be caused by a parasitic draw from a faulty module or accessory.
    • Solution: Perform a parasitic draw test to identify the source of the drain. Repair or replace the faulty component.
    • Estimated Cost to Fix: $100 - $1,000+ depending on the cause
    • Recalls: None Found
  • Infotainment System Freezing/Crashing
    • Description/Symptoms: The MyLink infotainment system freezes, crashes, or becomes unresponsive.
    • Solution: Try updating the software. If the issue persists, the infotainment module may need to be replaced.
    • Estimated Cost to Fix: $100 - $1,200+
    • Recalls: None Found

Exterior

  • Rear Liftgate Actuator Failure
    • Description/Symptoms: The power liftgate fails to open or close properly. The actuator motor may be noisy or completely dead.
    • Solution: Replace the liftgate actuator.
    • Estimated Cost to Fix: $300 - $600+
    • Recalls: None Found

Interior

  • Cracked Dashboard
    • Description/Symptoms: Dashboard cracks, particularly in warmer climates or areas with high sun exposure.
    • Solution: Replace the dashboard or install a dashboard cover.
    • Estimated Cost to Fix: $50 (cover) - $1,500+ (replacement)
    • Recalls: None Found
  • AC Not Cold Enough
    • Description/Symptoms: Air conditioner blows warm air.
    • Solution: Recharge the AC system. If the issue persists, there is a leak somewhere in the system.
    • Estimated Cost to Fix: $150 - $1000
    • Recalls: None Found

Summary

The 2015 GMC Yukon XL has several common issues that potential buyers should be aware of. Engine problems, particularly AFM lifter failure and excessive oil consumption, can be expensive to repair. Suspension issues, especially with the Magnetic Ride Control, are also common and costly. Electrical gremlins and interior flaws like cracked dashboards can further detract from the ownership experience. While some issues are relatively minor, others can lead to significant repair bills. Overall, the severity of the issues ranges from moderate to severe, with repair costs varying widely depending on the specific problem.

GMC, Yukon XL
GMC Yukon XL 2015
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