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Owner complaints · Fuel/Propulsion System

2021 GMC Yukon fuel system problems

89 of the 559 complaints owners filed with NHTSA about the 2021 GMC Yukon name the fuel system (NHTSA’s “Fuel/Propulsion System” heading — fuel tanks, lines, pumps and injection — and on an EV, the propulsion battery and motors). Filed under the same heading: 93 manufacturer bulletins, 2 recalls. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.

89 complaints 16% of this model year’s typically at 52k miles

What owners filed about the fuel system

Source: NHTSA complaint database
89complaints name the fuel system

0 of the 89 reports a crash · 0 a fire · 0 injuries. Self-reported, unverified.

Filed per year: 2022: 5 · 2023: 13 · 2024: 11 · 2025: 33 · 2026: 27

52kmiles, typically

Half of the 16 owners who gave an odometer reading reported the fuel system problem between 29,000 and 60,000 miles. A median of reports, not the life of a part.

16%of this model year’s complaints

559 complaints in all about the 2021 GMC Yukon, 27 filed in 2026. The whole picture, every system →

Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Fuel/Propulsion System” means the same area of the vehicle, not one fault.

Across model years: GMC Yukon fuel system problems, every year on file →

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In owners’ own words

Source: NHTSA complaint database

Filed with NHTSA by the people who own these cars, about the fuel system. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.

Noticeable ticking from the motor, loss of power while driving and smoking. Took to dealership to for repairs. Lifters replaced on one side, within 30 miles after leaving dealership vehicle lost power and would not crank. Per dealership same issue with spun bearing and crankshaft. New lifters and crankshaft placed.
Fuel/Propulsion System May 14, 2025 NHTSA owner report
I was driving on a highway at speeds of 65 mph and the engine stalled on the left lane. I almost got struck by a tracker trailer. The dealer supposedly fixed the issue and a few months went by and the vehicle died again engine failure in middle of the highway
Fuel/Propulsion System Apr 26, 2025 NHTSA owner report
I was driving with my son and my car just stalled out in the middle of the road. I couldn’t start it and we were stuck in the middle of the road. My husband arranged for a tow and the repair shop (safe auto repair Mont Belvieu) told me that this type of thing they have seen a lot of.
Fuel/Propulsion System Mar 27, 2025 NHTSA owner report
The contact owns a 2021 GMC Yukon XL. The contact stated while attempting to start the vehicle, the vehicle failed to start up. The vehicle was towed to a dealer where it was diagnosed that the fuel pump power control module was inoperable. The vehicle was not repaired.
Fuel/Propulsion System at 63,000 miles Sep 3, 2024 NHTSA owner report
I was driving on a normal local highway and my car started to slow and an indicator to 'press start' to restart the engine came up. I tried to do that and the engine wouldn't turn over. My car sputtered to a stop during rush hour traffic as I was able to drift over to side of the road.
Fuel/Propulsion System Jan 16, 2024 NHTSA owner report

What is on file about the fuel system

Source: NHTSA recalls, investigations and manufacturer communications

Recalls filed under this heading

93 manufacturer bulletins filed under this heading

The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.

Trouble codes named on this system

P129F P0201 P0202 P0203 P0204 P0205 P0206 P0216

Codes a bulletin or an owner’s complaint about the 2021 GMC Yukon names on this model year; a code with a record of its own links it.

Other systems with a record on the 2021 GMC Yukon

Source: the same files
From here

Common questions

Source: NHTSA complaint database, recalls and manufacturer communications

Are fuel system problems common on the 2021 GMC Yukon?

They are documented: NHTSA holds 89 owner complaints naming the fuel system on this model year (16% of everything owners filed about it), and 93 manufacturer bulletins, 2 recalls are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.

Is there a recall for the fuel system on the 2021 GMC Yukon?

Yes — 2 campaigns are filed under this heading: 21V739000, 21V064000. A recall is matched by VIN; check yours at nhtsa.gov/recalls.

When do fuel system problems show up on the 2021 GMC Yukon?

Owners who gave an odometer reading reported it at a median of 52,000 miles; half of them between 29,000 and 60,000. That is when reports cluster, not the life of a part.

What does NHTSA's "Fuel/Propulsion System" heading cover?

Fuel tanks, lines, pumps and injection — and on an EV, the propulsion battery and motors. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.