The Lemon IndexThe engine computer sees misfires that move around between cylinders instead of staying in one. Full P0300 page
11 owner complaints · the #1 code Chevrolet Tahoe owners name · 14% of Chevrolet Tahoe complaints that name a code (every car: 2.9%)
Middle of 120,000 miles · most between 115,000 and 130,000 (5 owners gave it)
Chevrolet Tahoe owners named P0300 in 11 complaints to the U.S. government (NHTSA), most often on the 2021, 2017 and 2025 model years, at a middle of 120,000 miles. The part they name most is the ignition coils (2 complaints). Complaints are owner reports, not proof of a defect.
Chevrolet Tahoe model years that report P0300
Owner complaints naming P0300, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
Mileage when it happened
120,000 miles is the middle of what 5 owners entered. Half were between 115,000 and 130,000 miles.
The mileage on the complaint form, when the owner gave one.
What owners say caused it or fixed it
The most-named part is the ignition coils, in 2 of the 11 complaints (18%). 2 of those mention it being replaced or repaired, and 2 say the problem came back afterwards.
- Ignition coils2 complaints2 mention a repair or replacement, 2 of them say the problem came back · what owners paid
4 complaints mention a recall and 3 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P0300
45% of these complaints say the check engine light came on.
- Shakes, runs rough or misfires73%8 of 11 complaints
- Loses power or goes into limp mode27%3 of 11 complaints
- Brakes or ABS act up18%2 of 11 complaints
- Warning lights and electrical faults18%2 of 11 complaints
- Flashing check engine light18%2 of 11 complaints
Share of the complaints naming P0300 whose text also describes each problem. A complaint can describe more than one.
Codes owners report with it
Other codes named in the same Chevrolet Tahoe complaints, and in how many.
Recalls on these Chevrolet Tahoe years
- Transmission & drivetrain · 2017 · issued 2026
A component missing from the drivetrain transfer case may cause the front and/or rear wheels to lock up without warning to the driver. NHTSA 26V289000 - Engine · 2021, 2023 · issued 2025
The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure. NHTSA 25V274000 - Transmission & drivetrain · 2021 · issued 2024
The transmission control valve may fail and cause the rear wheels to lock-up. NHTSA 24V797000 - Transmission & drivetrain · 2021 · issued 2022
The rear wheel driveshaft assemblies may have internal components that were not heat-treated properly, possibly resulting in driveshaft failure. NHTSA 22V036000
4 recalls for the same systems (engine and powertrain) on the Chevrolet Tahoe model years above. A recall for the same system isn't proof it's behind P0300. Recall work is free at any dealer: check a VIN at nhtsa.gov/recalls or with our VIN check.
Keep going
- P0300: meaning, causes and every car that reports it
- Chevrolet Tahoe reliability by year
- 2021 Chevrolet Tahoe problems and recalls
P0300 on other cars
Ford Escape (36) · Chevrolet Silverado (19) · Ford Fusion (19) · Honda Accord (14) · Honda CR-V (14) · Kia Soul (14) · Ford Edge (13) · Ford F-Series (10) · GMC Sierra (10)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P0300 means
The engine computer sees misfires that move around between cylinders instead of staying in one. The engine may shake, stumble or feel down on power. If the check engine light flashes, the misfire is bad enough to overheat the catalytic converter: slow down and get it checked right away.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
- Worn spark plugs or ignition coils
- Vacuum leak
- Low fuel pressure or dirty injectors
- Engine mechanical problem (compression, valve timing)
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11773681, 11737642, 11736994, 11719981, 11712732, 11705793, 11703278, 11639153, 11291732, 11058394, 10864697.
Quick answers
What does P0300 mean on a Chevrolet Tahoe?
Random/Multiple Cylinder Misfire Detected. The engine computer sees misfires that move around between cylinders instead of staying in one. The engine may shake, stumble or feel down on power. If the check engine light flashes, the misfire is bad enough to overheat the catalytic converter: slow down and get it checked right away.
Which Chevrolet Tahoe years have the most P0300 complaints?
In complaints to NHTSA, owners of the 2021 (4), 2017 (2), 2025 (1) Chevrolet Tahoe named P0300 most (11 complaints in all, 2007–2025). Raw counts, not a failure rate.
What fixes P0300 on a Chevrolet Tahoe?
Owners most often name the ignition coils (2 of 11 complaints). That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
At what mileage does P0300 show up on a Chevrolet Tahoe?
Owners who gave their mileage reported a middle of 120,000 miles; half were between 115,000 and 130,000 (5 owners).
Can I drive my Chevrolet Tahoe with P0300?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Sources: NHTSA owner complaints that name P0300 on the Chevrolet Tahoe, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.