# Service bulletin SSM 49536

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: 10187921
- Published by NHTSA: 2021\-03\-03
- Manufacturer's number: SSM 49536
- Manufacturer's date: 2021\-02\-02
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Some 2017\-2021 Ford GT vehicles may exhibit a runs rough or hard start with or without an illuminated MIL with DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306 and/or P0316. Prior to performing any diagnostics, determine if the vehicle operating conditions may have resulted in multiple cold engine start\-ups without allowing the engine to reach normal operating temperature and being driven. If that operating condition is determined, inspect the spark plugs per Workshop Manual \(WSM\), Section 303\-00 and repair as directed. If no concern with spark plugs are found, proceed with normal diagnostics per the Powertrain Controls/Emission Diagnosis \(PC/ED\) Manual. Upon returning the vehicle, refer the customer to the owners guide regarding proper driving cycles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187921-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187921-9999.pdf)

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

## Components

Engine

## Trouble codes named

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0316

## Vehicles listed

- 2017 to 2018 FORD GT

## Other bulletins for the same vehicles and component

- [SSM 50616](/bulletins/10209230.md), 2022-03-22, Service bulletin: ENGINE AND ENGINE COOLING. Some 2017\-2022 Ford GT vehicles may exhibit a runs rough or hard start with or without an illuminated MIL with DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306 and/or P0316. Prior to performing any diagnostics, determine if the vehicle operating conditions may have resulted in multiple cold engine start\-ups without allowing the engine to reach normal operating temperature and being driven. If that operating condition is determined, inspect the spark plugs per Workshop Manual \(WSM\), Section 303\-00 and repair as directed. If no concern with spark plugs are found, proceed with normal diagnostics per the Powertrain Controls/Emission Diagnosis \(PC/ED\) Manual. Upon returning the vehicle, refer the customer to the owners guide regarding proper driving cycles.
- [SSM 49028](/bulletins/10177874.md), 2020-08-04, Service bulletin: ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Some 2017\-2020 Ford GT vehicles may exhibit a runs rough or hard start with or without an illuminated MIL with DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306 and/or P0316. Prior to performing any diagnostics, determine if the vehicle operating conditions may have resulted in multiple cold engine start\-ups without allowing the engine to reach normal operating temperature and being driven. If that operating condition is determined, inspect the spark plugs per Workshop Manual \(WSM\), Section 303\-00 and repair as directed. If no concern with spark plugs are found, proceed with normal diagnostics per the Powertrain Controls/Emission Diagnosis \(PC/ED\) Manual. Upon returning the vehicle, refer the customer to the owners guide regarding proper driving cycles.

JSON: [/v1/bulletins/10187921](/v1/bulletins/10187921)

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