# Service bulletin 22\-NA\-203

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10254012
- Published by NHTSA: 2024\-05\-02
- Manufacturer's number: 22\-NA\-203
- Manufacturer's date: 2024\-04\-17
- NHTSA component: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING

## NHTSA's summary

This technical bulletin provides a procedure to correct the condition of Check Engine Lamp Illuminated on Driver Information Center \(DIC\) with DTC P0451 Set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10254012-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10254012-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Fuel system

## Trouble codes named

P0451

## Vehicles listed

- 2021 to 2024 BUICK ENVISION
- 2019 to 2024 CADILLAC XT4

## Other bulletins for the same vehicles and component

- [N252516900\-01](/bulletins/11028909.md), 2026-02-19, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
- [N252516900](/bulletins/11028382.md), 2026-02-05, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Additional VINs moved to Open status.
- [N252516900](/bulletins/11027870.md), 2026-01-29, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Additional VINs Moved to ‘Open’ Status
- [N252516900](/bulletins/11027666.md), 2026-01-15, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Fuel Pump Power Control Module. Additional VINs Moved to ‘Open’ Status
- [N252516900](/bulletins/11026626.md), 2025-12-17, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Additional VINs moved to Open status.
- [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
- [25\-NA\-249](/bulletins/11024386.md), 2025-10-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM. This service bulletin provides the correction to the condition of the Malfunction Indicator Lamp being illuminated and/or the DTC P149E set.
- [N252516900](/bulletins/11024191.md), 2025-10-09, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Population Expansion.
- [N252516900](/bulletins/11023730.md), 2025-10-03, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. Fuel Pump Power Control Module.

JSON: [/v1/bulletins/10254012](/v1/bulletins/10254012)

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