2021 GMC Yukon XL fuel/propulsion system problems
24 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 GMC Yukon XL — 12% of all complaints for this model year.
What owners report
“My 2021 GMC Yukon XL recently suffered a failure of its fuel pump control module. This occurred at just 44,000 miles, mere weeks after my manufacturer warranty expired in June of 2026. This issue goes far beyond a financial inconvenience or a matter of consumer reimbursement; it is a severe…”
filed Jul 2, 2026
“Check engine light comes on and an alert says "acceleration reduced" dealer says the coolant control valve is bad but the engine never overheats but the fans are running max speed 100% of the time.”
filed Jun 12, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Yukon XL years
| Year | Reports | Share |
|---|---|---|
| 2026 Yukon XL | 1 | 5% |
| 2025 Yukon XL | 2 | 9% |
| 2024 Yukon XL | 6 | 10% |
| 2023 Yukon XL | 18 | 9% |
| 2022 Yukon XL | 12 | 8% |
| 2020 Yukon XL | 3 | 7% |
| 2018 Yukon XL | 2 | 4% |
| 2017 Yukon XL | 5 | 3% |
| 2016 Yukon XL | 5 | 3% |
| 2015 Yukon XL | 6 | 2% |
| 2009 Yukon XL | 1 | 4% |
| 2005 Yukon XL | 3 | 7% |
Other reported problem areas on the 2021 GMC Yukon XL
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.