The project manager should first gather more information about the previous project's issues by interviewing the other project manager. This will help in understanding the root causes of the delay and how to prevent similar issues in the current project before taking further action.

 The project manager should first include the risk of delay in delivery of the GTG in the risk register and communicate with the stakeholders about the potential impact and response strategies. This is part of the risk identification process, which is the first step in risk management. The risk register is a document that records the identified risks, their causes, effects, probabilities, impacts, and response plans. The project manager should communicate with the stakeholders to ensure that they are aware of the risk and its implications, and to obtain their feedback and support. The project manager should also update the risk register as new information becomes available or as the risk status changes. The other options are not the first actions that the project manager should take. Communicating with the client to provide the previous shutdown plan is part of the risk response process, which comes after the risk identification and analysis processes. Reviewing and updating the project schedule is part of the schedule management process, which is not directly related to risk management. Interviewing the other project manager to learn more details is a technique that can be used to identify risks, but it is not the first action that the project manager should take. The project manager should first document the risk in the risk register and communicate with the stakeholders before seeking more information from other sources. References: 3, 4, 5