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Diagnostic trouble code

P129F

42 owner reports and 521 manufacturer filings across 79 model years from Buick, Cadillac, Chevrolet, GMC.

PowertrainManufacturer-specific521 manufacturer filings42 owner reports

Where P129F shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2022 GMC TerrainElectrical System117
2022 Chevrolet EquinoxFuel/Propulsion System98
2021 GMC YukonElectrical System124
2023 GMC YukonElectrical System15
2023 Chevrolet ExpressFuel/Propulsion System14
2023 GMC SavanaElectrical System14
2021 Chevrolet TahoeFuel/Propulsion System76
2022 GMC YukonElectrical System121
2021 Chevrolet SuburbanFuel/Propulsion System102
2022 Chevrolet ExpressFuel/Propulsion System11
2021 Chevrolet ExpressFuel/Propulsion System11
2022 Chevrolet SuburbanFuel/Propulsion System101
2023 Cadillac EscaladeElectrical System10
2022 Cadillac EscaladeFuel/Propulsion System10
2022 Chevrolet SilveradoFuel/Propulsion System73
2021 Cadillac EscaladeFuel/Propulsion System9
2022 Chevrolet BlazerFuel/Propulsion System71
2023 Chevrolet SilveradoEngine71
2022 GMC SavanaElectrical System8
2021 GMC SavanaElectrical System8
2023 GMC SierraElectrical System71
2023 Buick EnclaveFuel/Propulsion System7
2022 Buick EnclaveFuel/Propulsion System7
2021 Buick EnclaveElectrical System7
2023 Buick EncoreElectrical System7
2022 Buick EncoreElectrical System7
2021 Buick EncoreElectrical System7
2023 Buick EnvisionElectrical System7
2022 Buick EnvisionFuel/Propulsion System7
2021 Buick EnvisionElectrical System7
2023 Cadillac XT4Electrical System7
2022 Cadillac XT4Fuel/Propulsion System7
2021 Cadillac XT4Electrical System7
2023 Cadillac XT5Fuel/Propulsion System7
2022 Cadillac XT5Fuel/Propulsion System7
2021 Cadillac XT5Electrical System7
2023 Cadillac XT6Fuel/Propulsion System7
2022 Cadillac XT6Fuel/Propulsion System7
2021 Cadillac XT6Electrical System7
2023 Chevrolet BlazerFuel/Propulsion System7
2021 Chevrolet BlazerElectrical System7
2023 Chevrolet CamaroFuel/Propulsion System7
2022 Chevrolet CamaroElectrical System7
2021 Chevrolet CamaroElectrical System7
2023 Chevrolet EquinoxElectrical System7
2023 Chevrolet MalibuElectrical System7
2022 Chevrolet MalibuElectrical System7
2021 Chevrolet MalibuElectrical System7
2023 Chevrolet TahoeElectrical System7
2022 Chevrolet TahoeFuel/Propulsion System7
2023 Chevrolet TraverseFuel/Propulsion System7
2022 Chevrolet TraverseFuel/Propulsion System7
2021 Chevrolet TraverseElectrical System7
2023 GMC AcadiaFuel/Propulsion System7
2022 GMC AcadiaElectrical System7
2021 GMC AcadiaElectrical System7
2022 GMC SierraElectrical System61
2020 GMC Sierra 2500HDEngine And Engine Cooling7
2023 GMC TerrainElectrical System7
2023 Chevrolet SuburbanFuel/Propulsion System6

Showing the 60 model years where P129F appears most; it is on file for 79 in total.

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

What it gets filed under

Fuel/Propulsion System 224Electrical System 191Engine 115Engine And Engine Cooling 12Power Train 6Fuel System, Gasoline 2
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What owners said

Source: NHTSA complaint database

Owners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.

OBD reader Code P129F Fuel pump power control Module is bad GM has recall #N252516900 lists my year and make of my SUV but my VIN# is not included and GMC said that it will not covered because the vin is not on the list
2022 GMC TerrainAug 14, 2026NHTSA owner report
GM diagnostic code P129F indicates a Fuel Pump Driver Control Module (FPDCM) fuel pump speed signal fault… My vehicle with 51,000 miles was serviced on 5/6/2026 for PA inspections, oil change and transmission flush
2021 Chevrolet TahoeAug 10, 2026NHTSA owner report
I received an email at that exact time from General Motors showing a code of P129F which is the Fuel Pump Power Control Module
2023 Chevrolet SilveradoAug 5, 2026NHTSA owner report
The contact's husband was notified of DTC: P129F, which was diagnosed by the OnStar App
2022 Chevrolet Suburbanat 39,000 milesAug 3, 2026NHTSA owner report
onstar all of a sudden when the car shut down on me, it gave me a code of p129f
2024 Chevrolet EquinoxJul 24, 2026NHTSA owner report

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P129F. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What P129F means

Source: SAE J2012 / OBD-II

P129F is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.

A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.

Common questions about P129F

Source: NHTSA files and the OBD-II standard

Why does this page not define P129F?

Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.

Can I keep driving with P129F stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.

Does a code mean the car is recalled?

No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.

Why do the counts here differ from other sites?

Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.

Will clearing the code fix it?

Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.