Excessive oil consumption on the 2001 Chevrolet Tahoe
Only 3 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When excessive oil consumption gets reported
There are 3 reports of excessive oil consumption on the 2001 Chevrolet Tahoe, 3 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 85,000 miles. It is the 30th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 15,000 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 $900–$6,500 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 5 model years of this car. It shows up earliest on the 2001, at a median of 15,000 miles, and latest on the 2007 at 90,000 miles.
By volume the 2007 carries the most reports, with 31; the 2001 has 3. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
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.
A loud embarrassing and annoying internal engine knock. Defective due to design and manufacturing quality consistency problems. Higher than normal levels of wear related materials in oil analysis. Vertical piston and cylinder wall scuffing/scratching or scoring on the hammering (noisy) cylinders upon visual inspection. Reduced combustion chamber compression on the hammering (noisy) cylinders. Increased oil consumption. Increased exhaust emissions. *jb
Tl*the contact owns a 2001 chevrolet tahoe. The contact noticed that the vehicle was experiencing oil consumption failure. Tracy chevrolet performed an oil consumption diagnostic that spanned three years. The result of the diagnostic was that there was potential engine failure. In 2004, the dealer stated that the cylinder head level was missing a part from the factory assembly. Two months later, the vehicle continued to experience oil consumption failure. A general motors customer service agent promised to provide a new engine if the repair to the cylinder did not remedy the failure. Three years later, the dealer performed another oil consumption test and found yet another part missing from the original assembly. The contact asked general motors to replace the engine as promised but they refused to comply. The current mileage is 83,600 and failure mileage was 15,000.
Purchased brand new 2001 chevy tahoe and within first 3 months noticed oil level was lower than expected. Began 'oil consumption' test with tracy dealership that extended into 2004 until they finally agreed 2 tear down the engine...all 3 years was ongoing oil loss within the engine! They only went 2 the cylinder heads despite several requests by expert mechanic's advice 2 go further into the piston level. Tracy chevrolet reported their findings as 'parts missing from cylinder heads from original engine assembly'. Gm's ceo promised 2 replace my engine if the oil consumption wasn't fixed. Within 1 month of that repair, oil loss continued. Another 'oil consumption' test scenario was established and another 3 years passed with me reporting 2 them every 500 miles for oil level checks. Again, 3 years passed before they finally decided 2 tear the engine down again. (3/7/07). The cylinder heads were fine so gm recommended that they go down 2 the piston level (sound familiar??) where they found another missing part from original factory assembly! (oil control rings) they tried 2 have me accept they were doing me a favor as I was now out of…
Also reported on the 2001 Chevrolet Tahoe
ABS module or sensor failure
Parking brake failure
Other brake problem
Loss of braking
Other body or interior problem
Seat belt or retractor failure
How far this goes
This page is kept out of search results because 3 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 3 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 excessive oil consumption happen on the 2001 Chevrolet Tahoe?
Across 3 owner reports that included an odometer reading, half were filed by 15,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is excessive oil consumption on the 2001 Chevrolet Tahoe?
3 reports have been filed with NHTSA, about 0.1 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