diff --git a/tests/system/providers/google/cloud/cloud_build/example_cloud_build.py b/tests/system/providers/google/cloud/cloud_build/example_cloud_build.py
index 0b6b25dc6500d..d31c799d95661 100644
--- a/tests/system/providers/google/cloud/cloud_build/example_cloud_build.py
+++ b/tests/system/providers/google/cloud/cloud_build/example_cloud_build.py
@@ -44,7 +44,7 @@
 ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
 PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT") or DEFAULT_GCP_SYSTEM_TEST_PROJECT_ID
 
-DAG_ID = "example_gcp_cloud_build"
+DAG_ID = "gcp_cloud_build"
 
 GCP_SOURCE_ARCHIVE_URL = "gs://airflow-system-tests-resources/cloud-build/file.tar.gz"
 # Repository with this name is expected created within the project $SYSTEM_TESTS_GCP_PROJECT
@@ -52,21 +52,21 @@
 #   1. Create Cloud Source Repository
 #   2. Push into a master branch the following file:
 #   tests/system/providers/google/cloud/cloud_build/resources/example_cloud_build.yaml
-GCP_SOURCE_REPOSITORY_NAME = "test-cloud-build-repo"
+GCP_SOURCE_REPOSITORY_NAME = "test-cloud-build-repository"
 
 CURRENT_FOLDER = Path(__file__).parent
 
 # [START howto_operator_gcp_create_build_from_storage_body]
 CREATE_BUILD_FROM_STORAGE_BODY = {
     "source": {"storage_source": GCP_SOURCE_ARCHIVE_URL},
-    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world"]}],
+    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world", "sleep 200"]}],
 }
 # [END howto_operator_gcp_create_build_from_storage_body]
 
 # [START howto_operator_create_build_from_repo_body]
 CREATE_BUILD_FROM_REPO_BODY: dict[str, Any] = {
     "source": {"repo_source": {"repo_name": GCP_SOURCE_REPOSITORY_NAME, "branch_name": "master"}},
-    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world"]}],
+    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world", "sleep 200"]}],
 }
 # [END howto_operator_create_build_from_repo_body]
 
@@ -76,7 +76,7 @@
     schedule="@once",
     start_date=datetime(2021, 1, 1),
     catchup=False,
-    tags=["example"],
+    tags=["example", "cloud_build"],
 ) as dag:
 
     @task_group(group_id="build_from_storage")
diff --git a/tests/system/providers/google/cloud/cloud_build/example_cloud_build_trigger.py b/tests/system/providers/google/cloud/cloud_build/example_cloud_build_trigger.py
index fa8bf9b7f3be7..ac58a1c567d46 100644
--- a/tests/system/providers/google/cloud/cloud_build/example_cloud_build_trigger.py
+++ b/tests/system/providers/google/cloud/cloud_build/example_cloud_build_trigger.py
@@ -25,9 +25,14 @@
 from datetime import datetime
 from typing import Any, cast
 
+from googleapiclient.discovery import build
+from googleapiclient.errors import HttpError
+
+from airflow.exceptions import AirflowException
 from airflow.models.baseoperator import chain
 from airflow.models.dag import DAG
 from airflow.models.xcom_arg import XComArg
+from airflow.operators.python import PythonOperator
 from airflow.providers.google.cloud.operators.cloud_build import (
     CloudBuildCreateBuildTriggerOperator,
     CloudBuildDeleteBuildTriggerOperator,
@@ -42,16 +47,17 @@
 ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
 PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT") or DEFAULT_GCP_SYSTEM_TEST_PROJECT_ID
 
-DAG_ID = "example_gcp_cloud_build_trigger"
+DAG_ID = "gcp_cloud_build_trigger"
 
 # Repository with this name is expected created within the project $SYSTEM_TESTS_GCP_PROJECT
 # If you'd like to run this system test locally, please
 #   1. Create Cloud Source Repository
 #   2. Push into a master branch the following file:
 #   tests/system/providers/google/cloud/cloud_build/resources/example_cloud_build.yaml
-GCP_SOURCE_REPOSITORY_NAME = "test-cloud-build-repo"
+GCP_SOURCE_REPOSITORY_NAME = "test-cloud-build-repository"
 
-TRIGGER_NAME = f"cloud-build-trigger-{ENV_ID}"
+TRIGGER_NAME = f"cloud-build-trigger-{ENV_ID}".replace("_", "-")
+PROJECT_NUMBER = "{{ task_instance.xcom_pull('get_project_number') }}"
 
 # [START howto_operator_gcp_create_build_trigger_body]
 create_build_trigger_body = {
@@ -59,9 +65,10 @@
     "trigger_template": {
         "project_id": PROJECT_ID,
         "repo_name": GCP_SOURCE_REPOSITORY_NAME,
-        "branch_name": "main",
+        "branch_name": "master",
     },
     "filename": "example_cloud_build.yaml",
+    "service_account": f"projects/{PROJECT_ID}/serviceAccounts/{PROJECT_NUMBER}-compute@developer.gserviceaccount.com",
 }
 # [END howto_operator_gcp_create_build_trigger_body]
 
@@ -74,23 +81,40 @@
         "branch_name": "master",
     },
     "filename": "example_cloud_build.yaml",
+    "service_account": f"projects/{PROJECT_ID}/serviceAccounts/{PROJECT_NUMBER}-compute@developer.gserviceaccount.com",
 }
 # [END START howto_operator_gcp_update_build_trigger_body]
 
 # [START howto_operator_create_build_from_repo_body]
 create_build_from_repo_body: dict[str, Any] = {
     "source": {"repo_source": {"repo_name": GCP_SOURCE_REPOSITORY_NAME, "branch_name": "master"}},
-    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world"]}],
+    "steps": [{"name": "ubuntu", "args": ["echo", "Hello world", "sleep 200"]}],
 }
 # [END howto_operator_create_build_from_repo_body]
 
 
+def get_project_number():
+    """Helper function to retrieve the number of the project based on PROJECT_ID"""
+    try:
+        with build("cloudresourcemanager", "v1") as service:
+            response = service.projects().get(projectId=PROJECT_ID).execute()
+        return response["projectNumber"]
+    except HttpError as exc:
+        if exc.status_code == 403:
+            raise AirflowException(
+                "No project found with specified name, "
+                "or caller does not have permissions to read specified project"
+            )
+        else:
+            raise exc
+
+
 with DAG(
     DAG_ID,
     schedule="@once",
     start_date=datetime(2021, 1, 1),
     catchup=False,
-    tags=["example"],
+    tags=["example", "cloud_build_trigger"],
 ) as dag:
     # [START howto_operator_create_build_trigger]
     create_build_trigger = CloudBuildCreateBuildTriggerOperator(
@@ -100,6 +124,11 @@
 
     build_trigger_id = cast(str, XComArg(create_build_trigger, key="id"))
 
+    get_project_number = PythonOperator(
+        task_id="get_project_number",
+        python_callable=get_project_number,
+    )
+
     # [START howto_operator_run_build_trigger]
     run_build_trigger = CloudBuildRunBuildTriggerOperator(
         task_id="run_build_trigger",
@@ -145,6 +174,7 @@
     # [END howto_operator_list_build_triggers]
 
     chain(
+        get_project_number,
         create_build_trigger,
         run_build_trigger,
         update_build_trigger,