P2635
11 owner reports and 474 manufacturer filings across 102 model years from Buick, Cadillac, Chevrolet, GMC and others.
Where P2635 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 GMC Yukon | Fuel System, Gasoline | 29 | — |
| 2016 Cadillac Escalade | Fuel System, Gasoline | 21 | — |
| 2016 Chevrolet Suburban | Fuel System, Gasoline | 16 | — |
| 2017 GMC Sierra | Fuel System, Gasoline | 15 | — |
| 2017 Chevrolet Silverado | Fuel System, Gasoline | 13 | 1 |
| 2016 Chevrolet Tahoe | Fuel System, Gasoline | 13 | — |
| 2016 GMC Sierra | Fuel System, Gasoline | 13 | — |
| 2016 Chevrolet Silverado 2500HD | Fuel System, Gasoline | 11 | — |
| 2017 GMC Yukon | Fuel System, Other | 10 | 1 |
| 2017 Chevrolet Silverado 3500HD | Fuel System, Gasoline | 8 | — |
| 2017 Chevrolet Suburban | Fuel System, Gasoline | 8 | — |
| 2017 Chevrolet Colorado | Fuel System, Gasoline | 7 | — |
| 2016 Chevrolet Colorado | Fuel System, Gasoline | 7 | — |
| 2024 Chevrolet Silverado 2500HD | Engine | 7 | — |
| 2017 Chevrolet Tahoe | Fuel System, Other | 6 | 1 |
| 2017 GMC Canyon | Fuel System, Gasoline | 7 | — |
| 2016 GMC Canyon | Fuel System, Gasoline | 7 | — |
| 2024 GMC Sierra 2500HD | Engine | 7 | — |
| 2016 GMC Sierra 2500HD | Fuel System, Gasoline | 7 | — |
| 2017 Cadillac Escalade | Fuel System, Other | 6 | — |
| 2017 Chevrolet Spark | Fuel System, Other | 6 | — |
| 2016 Chevrolet Spark | Fuel System, Other | 6 | — |
| 2017 Cadillac XT5 | Fuel System, Other | 5 | — |
| 2017 Chevrolet Cruze | Fuel System, Gasoline | 5 | — |
| 2017 Chevrolet Express | Fuel System, Gasoline | 5 | — |
| 2016 Chevrolet Express | Fuel System, Gasoline | 5 | — |
| 2017 Chevrolet Malibu | Fuel System, Other | 5 | — |
| 2016 Chevrolet Malibu | Fuel System, Other | 5 | — |
| 2018 Chevrolet Silverado 2500HD | Fuel System, Gasoline | 5 | — |
| 2024 Chevrolet Silverado 3500HD | Engine | 5 | — |
| 2016 Chevrolet Silverado 3500HD | Fuel System, Gasoline | 5 | — |
| 2019 Chevrolet Tahoe | Fuel/Propulsion System | — | 5 |
| 2017 Chevrolet Volt | Fuel System, Other | 5 | — |
| 2016 Chevrolet Volt | Fuel System, Other | 5 | — |
| 2017 GMC Acadia | Fuel System, Other | 5 | — |
| 2017 GMC Savana | Fuel System, Gasoline | 5 | — |
| 2016 GMC Savana | Fuel System, Gasoline | 5 | — |
| 2024 GMC Sierra 3500HD | Electrical System | 5 | — |
| 2017 Buick Cascada | Fuel System, Other | 3 | — |
| 2016 Buick Cascada | Fuel System, Other | 3 | — |
| 2017 Buick Enclave | Fuel System, Other | 3 | — |
| 2016 Buick Enclave | Fuel System, Other | 3 | — |
| 2017 Buick Encore | Fuel System, Other | 3 | — |
| 2016 Buick Encore | Fuel System, Other | 3 | — |
| 2017 Buick Envision | Fuel System, Other | 3 | — |
| 2016 Buick Envision | Fuel System, Other | 3 | — |
| 2017 Buick LaCrosse | Fuel System, Other | 3 | — |
| 2016 Buick LaCrosse | Fuel System, Other | 3 | — |
| 2017 Buick Regal | Fuel System, Other | 3 | — |
| 2016 Buick Regal | Fuel System, Other | 3 | — |
| 2017 Buick Verano | Fuel System, Other | 3 | — |
| 2016 Buick Verano | Fuel System, Other | 3 | — |
| 2017 Cadillac ATS | Fuel System, Other | 3 | — |
| 2017 Cadillac CT6 | Fuel System, Other | 3 | — |
| 2016 Cadillac CT6 | Fuel System, Other | 3 | — |
| 2017 Cadillac CTS | Fuel System, Other | 3 | — |
| 2016 Cadillac ELR | Fuel System, Other | 3 | — |
| 2016 Cadillac SRX | Fuel System, Other | 3 | — |
| 2017 Cadillac XTS | Fuel System, Other | 3 | — |
| 2016 Cadillac XTS | Fuel System, Other | 3 | — |
Showing the 60 model years where P2635 appears most; it is on file for 102 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
What owners said
Source: NHTSA complaint databaseOwners’ 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.
The vehicle has previously experienced electrical and fuel-system related issues, including fault codes such as P2635, P0E32 and P0E37
03-04-24 Engine sputtering Scanned vehicle and codes P2635 fuel pump low fuel/performance was detected
Code: P2635 Fuel pump ‘A’ low flow/ performance It only happens when it’s warm outside
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P2635. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- 23-NA-0662024-10-10 · Electrical System
- This service bulletin refers the technician to Recall N242438501, and if closed, refer to SI to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P0402, P062D, P144E, P242B, P2459, and/or P2635 Set.
- 23-NA-0662024-05-24 · Engine
- This service bulletin refers the technician to Recall N242438501, and if closed, refer to SI to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P0402, P062D, P144E, P242B, P2459, and/or P2635 Set.
- 23-NA-0662024-04-16 · Electrical System
- This service bulletin provides a procedure to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P0402, P062D, P144E, P242B, P2459, and/or P2635 Set.
- PIP5916B2023-05-31 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm) — Software
- This Preliminary information communicates that there is a software issue in the ecm for the following dtc's P062D P163A P163B, P0402 P144E. P2635 which could cause a crank, no start issue, and how to correct.
- PIP5916A2023-05-30 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm) — Software
- This Preliminary information communicates that there is a software issue in the ecm for the following dtc's P062D P163A P163B, P0402 P144E. P2635 which could cause a crank, no start issue, and how to correct.
- 17-NA-3352021-04-15 · Engine
- Malfunction Indicator Lamp Illuminated (MIL) - DTC P2635 and/or P018B Set In High Ambient Temperatures With Hesitation, Surging and Stalling Condition Some customers may comment that the Malfunction Indicator Light (MIL) is illuminated. Some customers may also comment on one or more of the following symptoms: Hesitation Surging Stalling Note: In ambient temperatures 100 F (37.7
What P2635 means
Source: SAE J2012 / OBD-IIP2635 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 P2635
Source: NHTSA files and the OBD-II standardCan I keep driving with P2635 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.