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2021 Chevrolet Suburban fuel system problems
moderate
Owners of the 2021 Chevrolet Suburban have filed 8 NHTSA complaints about the fuel system, typically surfacing around 62,000 miles at roughly $1,200 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation.See fuel system across all vehicles →
Failure mileage
Q1 46kmed 62kQ3 90kn=8
Complaints
8
Recalls
1
Avg fix
$1,200
When does it fail?
Of the 8 fuel system complaints filed for the 2021 Chevrolet Suburban,
here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
0 (0%)
25-50k
0 (0%)
50-75k
0 (0%)
75-100k
1 (100%)
100-125k
0 (0%)
125-150k
0 (0%)
150k+
0 (0%)
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted.
Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits
and driving conditions shift the curve as much as mileage alone.
General Motors, LLC (GM) is recalling certain 2021 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL vehicles
An engine stall increases the risk of a crash.
Fix: Dealers will replace the fuel pump power control module, free of charge. Owner notification letters were mailed on October 14, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; or GMC customer service at 1-800-462-8782. GM's number for this recall is N212332040.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering fuel system on this vehicle — documented
repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall
(it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Service Bulletin22-NA-057Mar 2024
This technical bulletin provides a procedure replace the tappet that is located on the fuel door.
This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting
1 most recent
fuel system · 90,000 mi
· filed 12/20/2023
The contact owns a 2021 Chevrolet Suburban. The contact stated while driving 45-55 MPH, the vehicle lost motive power inadvertently. There was no warning light illuminated. The contact was able to veer to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed that the fuel pump power control module had failed and needed to be replaced.…
Had fuel system trouble with your 2021 Chevrolet Suburban?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the fuel system problem on the 2021 Chevrolet Suburban?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $1,200 and most owners catch it before it causes a breakdown.
At what mileage does the fuel system typically fail?
Across the 8 complaints that reported odometer mileage, most fuel system failures cluster between 46,000 and 90,000 miles, with the median around 62,000. A quarter of owners report trouble before 46,000; a quarter make it past 90,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $1,200 for fuel system repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to fuel system?
Yes — 1 active recall(s) cover fuel system issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Chevrolet/Suburban.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.