What is the 2015 GMC Yukon XL Electric Power Steering (EPS) Assist Loss / Reduced Assist (NHTSA 14V-153)?

Some Yukon XL models can experience intermittent or complete loss of electric power steering assist, increasing steering effort especially at low speeds. GM issued a safety recall for EPS-related conditions (NHTSA 14V-153) affecting certain full-size GM SUVs, including Yukon XL,… Severity: high.

What is the 2007-2019 GMC Yukon XL Active Fuel Management (AFM) Lifter Failure and Tick?

The Yukon XL with the 5.3L or 6.2L V8 and Active Fuel Management (AFM/DOD) system develops hydraulic valve lifter failures. The AFM lifters, which collapse to deactivate cylinders for fuel economy, fail and cause persistent ticking noise, misfires, and potential camshaft damage. Repairs typically run $1,500-$4,500. Severity: high.

What is the 2015-2017 GMC Yukon XL Takata Passenger Airbag Inflator Rupture Risk (Recall 174 / NHTSA 21V-050)?

NHTSA campaign 21V050 covers certain 2007-2011 GMC Yukon XL vehicles in specified U.S. states and territories. Long-term heat and humidity exposure can degrade the non-desiccated passenger frontal-airbag inflator propellant and cause the inflator to explode during deployment. Severity: high.

What is the 2015-2020 GMC Yukon XL Steering Column Lock Actuator Click and Binding?

The electronic steering column lock (ESCL) actuator in 2015-2020 Yukon XL models develops a clicking, popping, or grinding noise when turning the steering wheel, particularly at startup. In some cases, the ESCL prevents the vehicle from starting entirely, displaying a "Steering C… Repairs typically run $300-$800. Severity: high.

What is the 2007-2020 GMC Yukon XL Rear Air Suspension (Auto-Leveling) Compressor Failure / Air Shock Leaks (Z55/Z95 equipped)?

Yukon XL models equipped with rear auto-leveling air suspension can suffer compressor burnout or air shock/air line leaks, causing the rear to sag and triggering suspension warnings. Owners commonly report the compressor running frequently or continuously before failing, and the… Repairs typically run $450-$1,800. Severity: medium.

What is the 2007-2019 GMC Yukon XL AC Compressor and Rear AC System Failure?

The Yukon XL (like all GMT900 full-size GM SUVs) has a high rate of AC compressor failure, often before 80,000 miles. When the compressor seizes, metal debris contaminates the entire system. The dual-zone system with separate rear AC is complex and expensive to repair. Rear AC li… Repairs typically run $800-$2,500. Severity: medium.

What is the 2015-2024 GMC Yukon XL Transmission Torque Converter Shudder (8L90/10L80)?

The 8-speed (8L90) and 10-speed (10L80) automatic transmissions in the Yukon XL develop a torque converter clutch (TCC) shudder felt as a vibration or shake at light throttle between 25-50 mph. The shudder mimics driving over rumble strips. GM issued multiple TSBs (18-NA-355, 19-… Repairs typically run $150-$3,000. Severity: medium.

What is the 2015-2024 GMC Yukon XL Transfer Case Fluid Leak from Output Shaft Seal?

Four-wheel-drive Yukon XL models with the NP263 (NQH) and NP246 transfer cases develop fluid leaks from the front and rear output shaft seals. The leak typically starts as a slow weep and progresses to a steady drip, leaving ATF spots on the driveway. If left unaddressed, the tra… Repairs typically run $200-$600. Severity: medium.

What is the 2007-2020 GMC Yukon XL Door Handle/Linkage Failure (Exterior Handle Pulls but Door Won’t Open)?

Yukon XL owner reports frequently cite exterior door handles or internal linkage rods/clips failing, causing the handle to move without unlatching the door. This can occur on front or rear doors and may worsen in cold weather or after repeated use as plastic clips fatigue. The is… Repairs typically run $120-$550. Severity: low.

What is the 2007-2020 GMC Yukon XL Rear Wiper Motor/Washer Hose Failure (No Rear Wipe or Washer Spray)?

Yukon XL vehicles commonly experience rear wiper motor failure or washer hose disconnection/leaks in the liftgate area, resulting in loss of rear wiping or washer function. Owners report the rear wiper stopping intermittently, moving slowly, or not operating at all, and washer fl… Repairs typically run $90-$450. Severity: low.

What is the 2015-2020 GMC Yukon XL Dashboard Cracking and Warping from UV/Heat Exposure?

The K2UC (2015-2020) generation Yukon XL dashboards develop cracks, warping, and delamination from UV exposure and heat cycling, particularly in southern states. Cracks typically originate near the defroster vents and passenger airbag seam and spread across the dash surface. The… Repairs typically run $150-$2,000. Severity: low.

What is the 2015-2024 GMC Yukon XL Rear Liftgate Support Strut Failure?

The Yukon XL rear liftgate gas struts lose their charge and fail to hold the heavy liftgate open, typically between 3-5 years regardless of mileage. The oversized liftgate of the XL model is significantly heavier than the standard Yukon, putting more stress on the struts. A faili… Repairs typically run $50-$200. Severity: low.

GMC · Known Issues

2015 GMC Yukon XL Problems: 15 Known Issues

2015 model year · 1,190+ owner reports · Updated August 2026

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According to Au7o's analysis of 1,190+ owner reports, the 2015 GMC Yukon XL has 15 documented known issues, with 6 rated critical. The most serious are 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss) ($250-$900 repair), Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings ($900-$3,200 repair), Electric Power Steering (EPS) Assist Loss / Reduced Assist (NHTSA 14V-153), Active Fuel Management (AFM) Lifter Failure and Tick ($1,500-$4,500 repair), Takata Passenger Airbag Inflator Rupture Risk (Recall 174 / NHTSA 21V-050) and Steering Column Lock Actuator Click and Binding ($300-$800 repair). The most commonly reported issue is Cracked Exhaust Manifold Bolts / Manifold Leak (5.3L/6.2L V8) Causing Cold-Start Tick with 260 owner reports. Across all issues with published estimates, repair costs range from $50 to $4,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common GMC Yukon XL problems?

According to Au7o's analysis of 1,190+ owner reports, the 2015 GMC Yukon XL has 15 documented issues. The most frequently reported are: 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss), Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings, Electric Power Steering (EPS) Assist Loss / Reduced Assist (NHTSA 14V-153). Of these, 6 are rated critical and should be addressed promptly.

Is the GMC Yukon XL reliable?

The 2015 GMC Yukon XL has 15 known issues documented across 1,190+ owner reports. 6 issues are rated critical: 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss) and Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings and Electric Power Steering (EPS) Assist Loss / Reduced Assist (NHTSA 14V-153) and Active Fuel Management (AFM) Lifter Failure and Tick and Takata Passenger Airbag Inflator Rupture Risk (Recall 174 / NHTSA 21V-050) and Steering Column Lock Actuator Click and Binding. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common GMC Yukon XL problems?

Repair costs for known GMC Yukon XL issues range from $50 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss), typically costs $250-$900 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2007-2016 GMC Yukon XL 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss)?

GMT900 and early K2XX Yukon XL models with 6L80/6L90 transmissions commonly develop leaks at the transmission cooler line crimps or quick-connect fittings. Owners report red fluid spots, low transmission fluid, and in severe cases slipping or overheating if fluid loss is signific… Repairs typically run $250-$900. Severity: high.

All 15 Known Issues

Other GMC Models

Frequently Asked Questions

What are the most common GMC Yukon XL problems?

Is the GMC Yukon XL reliable?

How much does it cost to fix common GMC Yukon XL problems?

What is the 2007-2016 GMC Yukon XL 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss)?

What is the 2015-2020 GMC Yukon XL Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings?

When Issues Typically Appear

2015 GMC Yukon XL: Electric Power Steering (EPS) Assist Loss / Reduced Assist (NHTSA 14V-153)#

2015-2017 GMC Yukon XL: Takata Passenger Airbag Inflator Rupture Risk (Recall 174 / NHTSA 21V-050)#

2007-2016 GMC Yukon XL: 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss)#

2015-2024 GMC Yukon XL: Transmission Torque Converter Shudder (8L90/10L80)#

2015-2020 GMC Yukon XL: Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings#

2007-2020 GMC Yukon XL: Rear Air Suspension (Auto-Leveling) Compressor Failure / Air Shock Leaks (Z55/Z95 equipped)#

2007-2019 GMC Yukon XL: Active Fuel Management (AFM) Lifter Failure and Tick#

2015-2020 GMC Yukon XL: Steering Column Lock Actuator Click and Binding#

2007-2020 GMC Yukon XL: Door Handle/Linkage Failure (Exterior Handle Pulls but Door Won’t Open)#

2015-2024 GMC Yukon XL: Rear Liftgate Support Strut Failure#

2007-2020 GMC Yukon XL: Cracked Exhaust Manifold Bolts / Manifold Leak (5.3L/6.2L V8) Causing Cold-Start Tick#

2007-2019 GMC Yukon XL: AC Compressor and Rear AC System Failure#

2015-2024 GMC Yukon XL: Transfer Case Fluid Leak from Output Shaft Seal#

2007-2020 GMC Yukon XL: Rear Wiper Motor/Washer Hose Failure (No Rear Wipe or Washer Spray)#

2015-2020 GMC Yukon XL: Dashboard Cracking and Warping from UV/Heat Exposure#