Fuel gauge or level sensor failure on the 2001 GMC Sierra 1500
When fuel gauge or level sensor failure gets reported
Owners of the 2001 GMC Sierra 1500 report fuel gauge or level sensor failure at a median of 100,000 miles. A quarter of the reports come in before 80,000 miles and a quarter after 150,000 miles, from 9 reports that carried an odometer reading.
A part like this is normally expected to survive 92,000 miles. It is the 6th most-reported problem on this model year.
The mileage distribution
The reported range runs from 75,000 miles at the tenth percentile to 150,000 miles at the ninetieth, a spread of 76,200 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 75,800 miles | 80,000 miles | 98,000 miles | 152,000 miles | 152,000 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Putting it right typically runs $300–$1,200 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 6 model years of this car. It shows up earliest on the 2007, at a median of 10,000 miles, and latest on the 2001 at 100,000 miles.
By volume the 2001 is the worst of them, which makes this a problem of this specific year rather than of the model as a whole.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
Gas fuel gauge-: gauge registers empty when tank is full. Refuel light comes on & stays on. Gauge bounces back & forth & is hard to tell how much fuel is actually in the tank. Have to watch odometer to figure out when to fill tank up with gas. On -going problem!!!!! *nm
The fuel gauge began jumping from full to empty regarless of the actual amount of fuel in the tank. I took gm's recommendation to put their fuel system cleaner into the gas tank to clean the contacts on the fuel sending unit. Approximately 6 months later, the catalytic converter plugged to the point that the vehicle would not run and it had to be replaced. Now told that only way to fix the fuel gauge is to pull the gas tank and replace the sending unit. Should be a recall for this faulty sending unit and the "quick fix" that many people probably try. Approximately $400 to fix sending unit because it's built into the gas tank, and approximately $1000 to replace the catalytic converter.
I own a 2001 gmc sierra 1500. I have always taken exceptional care of my vehicle. The motor has always had a knock when you start it,which devalues the truck & it also has always used oil. The rack & pinion has started leaking. I have always owned a truck & have never had a rack & pinion go out let alone at 152000 miles.it also is losing antifreeze but there are no leaks. The fuel gauge has never worked properly,now its also flashes low coolant light when its not low. I have seen numerous complaints on line concerning these same issues & lawsuits. I do not feel the consumer should be having to foot these bills. I have called gm about my concerns & they say there is nothing they can do. What can we do to get a recall for all these problems. My truck is one of the ones that have dex-cool antifreeze. *tr
Also reported on the 2001 GMC Sierra 1500
Loss of braking
ABS module or sensor failure
Other brake problem
Parking brake failure
Brake line, hose or caliper failure
Fuel tank, filler or EVAP failure
How far this goes
Complaints are voluntary, so 10 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does fuel gauge or level sensor failure happen on the 2001 GMC Sierra 1500?
Across 9 owner reports that included an odometer reading, half were filed by 100,000 miles. A quarter were filed before 80,000 miles and a quarter after 150,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is fuel gauge or level sensor failure on the 2001 GMC Sierra 1500?
10 reports have been filed with NHTSA, about 0.8 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed