What are the most common GMC Yukon problems?
According to Au7o's analysis of 490+ owner reports, the 2021 GMC Yukon has 3 documented issues. The most frequently reported are: 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion, 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up, Power Running Board Motor Failure and Corrosion. Of these, 2 are rated critical and should be addressed promptly.
Is the GMC Yukon reliable?
The 2021 GMC Yukon has 3 known issues documented across 490+ owner reports. 2 issues are rated critical: 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion and 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up. 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 problems?
Repair costs for known GMC Yukon issues range from $400 to $15,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion, typically costs $6,000-$15,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021-2024 GMC Yukon 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion?
The 6.2L L87 V8 in 2021-2024 Yukons can suffer catastrophic engine failure from connecting-rod bearing damage. GM's own teardown analysis (Recall 25V-274 / N252494001) identified two supplier root causes: machining sediment left on the connecting rods and in the crankshaft oil ga… Repairs typically run $6,000-$15,000. Severity: high.
What is the 2021-2023 GMC Yukon 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up?
The 10L80/10L90 ten-speed automatic exhibits harsh 1-2 upshifts when cold, steady-speed shudder around 40-70 mph, and a lag into Drive/Reverse that ends with a jolt. The failure point is valve-body wear and internal pressure leaks. In the worst case a transmission control-valve d… Repairs typically run $600-$4,000. Severity: high.
What is the 2015-2025 GMC Yukon Power Running Board Motor Failure and Corrosion?
The power retractable running boards available on 2015+ Yukon and Yukon XL are a common failure point. The electric motors and gearboxes corrode and seize, especially in salt-belt states. Boards get stuck in the out position (creating a road-clearance hazard and trip risk) or ref… Repairs typically run $400-$2,500. Severity: medium.
