diff --git a/tc/obsw_tc_service3.py b/tc/obsw_tc_service3.py
index 2eaa501cf42187f9a245dff390071739d6ce4690..79ffd4f99044477f47e452e155feb45e749c259a 100644
--- a/tc/obsw_tc_service3.py
+++ b/tc/obsw_tc_service3.py
@@ -10,159 +10,33 @@ from typing import Deque
 from tmtc_core.tc.obsw_pus_tc_base import PusTelecommand
 import config.obsw_config as g
 
+
+def make_sid(set_id: int, object_id: bytearray) -> bytearray:
+    set_id_bytearray = struct.pack(">I", set_id)
+    return object_id + set_id_bytearray
+
+
 # adding custom defintion to hk using test pool variables
-sid_test = g.TEST_SID
-sid_custom = g.CUSTOM_SID
-sid_gps = g.GPS0_SID
+sid_thermalsensor = make_sid(0, g.THERMAL_SENSOR_DEVICE_ID)
 collection_interval_hk = struct.pack('>f', 3)
 collection_interval_diag = struct.pack('>f', 0.8)
 number_of_parameters = struct.pack('>B', 5)
-p1 = g.TEST_ID_1
-p2 = g.TEST_ID_2
-p3 = g.TEST_ID_3
-p4 = g.TEST_ID_4
-p5 = g.TEST_ID_5
-hk_definition = sid_test + collection_interval_hk + number_of_parameters + p1 + p2 + p3 + p4 + p5
-diag_definition = (sid_custom + collection_interval_diag + number_of_parameters +
-                        p1 + p2 + p3 + p4 + p5)
 
 
 def pack_service3_test_into(tc_queue: Deque) -> Deque:
     tc_queue.appendleft(("print", "Testing Service 3"))
     # Predefined packet testing
-    pack_predefined_tests(tc_queue)
-
+    # pack_predefined_tests(tc_queue)
     pack_custom_tests(tc_queue)
 
     tc_queue.appendleft(("export", "log/tmtc_log_service3.txt"))
     return tc_queue
 
-
-def pack_predefined_tests(tc_queue: Deque):
-    # enable gps0
-    tc_queue.appendleft(("print", "Testing Service 3: Enable GPS definition"))
-    command = PusTelecommand(service=3, subservice=5, ssc=3000, app_data=sid_gps)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # enable test
-    tc_queue.appendleft(("print", "Testing Service 3: Enable test definition"))
-    command = PusTelecommand(service=3, subservice=5, ssc=3010, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # wait a bit to receive at least 2 packets..
-    tc_queue.appendleft(("wait", 2))
-
-    # disable gps0
-    tc_queue.appendleft(("print", "Testing Service 3: Disable GPS definition"))
-    command = PusTelecommand(service=3, subservice=6, ssc=3020, app_data=sid_gps)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # disable test
-    tc_queue.appendleft(("print", "Testing Service 3: Disable test definition"))
-    command = PusTelecommand(service=3, subservice=6, ssc=3030, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # report gps definition
-    tc_queue.appendleft(("print", "Testing Service 3: Reporting GPS definition"))
-    command = PusTelecommand(service=3, subservice=9, ssc=3040, app_data=sid_gps)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # report test definition
-    tc_queue.appendleft(("print", "Testing Service 3: Reporting test definition"))
-    command = PusTelecommand(service=3, subservice=9, ssc=3050, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # generate one gps 0 definition
-    tc_queue.appendleft(("print", "Testing Service 3: Generate one gps 0 defintion"))
-    command = PusTelecommand(service=3, subservice=27, ssc=3060, app_data=sid_gps)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # generate test definition
-    tc_queue.appendleft(("print", "Testing Service 3: Generate test defintion"))
-    command = PusTelecommand(service=3, subservice=27, ssc=3070, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-
 def pack_custom_tests(tc_queue: Deque):
     # deleting pre-defined test entry
-    tc_queue.appendleft(("print", "Testing Service 3: Deleting pre-defined HK definition"))
-    command = PusTelecommand(service=3, subservice=3, ssc=3100, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # adding pre-defined definition to hk using test pool variables
-    tc_queue.appendleft(("print", "Testing Service 3: Adding pre-defined HK definition"))
-    command = PusTelecommand(service=3, subservice=1, ssc=3110, app_data=hk_definition)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # adding custom definition to diagnostics using test pool variables
-    tc_queue.appendleft(("print", "Testing Service 3: Adding custom diganostics definition"))
-    command = PusTelecommand(service=3, subservice=2, ssc=3120, app_data=diag_definition)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # enable custom hk definition
-    tc_queue.appendleft(("print", "Testing Service 3: Enable custom definition"))
-    command = PusTelecommand(service=3, subservice=5, ssc=3130, app_data=hk_definition)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # enable custom diag definition
-    tc_queue.appendleft(("print", "Testing Service 3: Enable custom diagnostics definition"))
-    command = PusTelecommand(service=3, subservice=7, ssc=3140, app_data=diag_definition)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # Disable custom diag definition
-    tc_queue.appendleft(("print", "Testing Service 3: Disable custom diagnostics definition"))
-    command = PusTelecommand(service=3, subservice=8, ssc=3160, app_data=sid_custom)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # Disable custom hk definition
-    tc_queue.appendleft(("print", "Testing Service 3: Disable custom definition"))
-    command = PusTelecommand(service=3, subservice=6, ssc=3150, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # report custom test definition
-    tc_queue.appendleft(("print", "Testing Service 3: Reporting hk definition"))
-    command = PusTelecommand(service=3, subservice=9, ssc=3170, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # report custom Diag definition
-    tc_queue.appendleft(("print", "Testing Service 3: Reporting diag definition"))
-    command = PusTelecommand(service=3, subservice=11, ssc=3180, app_data=sid_custom)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # generate one custom hk definition
-    tc_queue.appendleft(("print", "Testing Service 3: Generate one custom hk definition"))
-    command = PusTelecommand(service=3, subservice=27, ssc=3190, app_data=sid_test)
-    tc_queue.appendleft(command.pack_command_tuple())
-
-    # generate one custom diag definition
-    tc_queue.appendleft(("print", "Testing Service 3: Generate one custom diagnostics definition"))
-    command = PusTelecommand(service=3, subservice=28, ssc=3200, app_data=sid_custom)
+    tc_queue.appendleft(("print", "Testing Service 3: "))
+    command = PusTelecommand(service=3, subservice=3, ssc=3100, app_data=sid_thermalsensor)
     tc_queue.appendleft(command.pack_command_tuple())
 
-    # modify custom hk definition interval
-    # new_interval = struct.pack('>f', 10.0)
-    # new_interval_command = sid1 + new_interval
-    # tc_queue.appendleft(("print", "Testing Service 3: Changing pre-defined HK definition interval"))
-    # command = PusTelecommand(service=3, subservice=31, ssc=3090, app_data=new_interval_command)
-    # tc_queue.appendleft(command.pack_command_tuple())
-    # report custom HK definition
-    # tc_queue.appendleft(("print", "Testing Service 3: Reporting pre-defined HK definition with changed interval"))
-    # command = PusTelecommand(service=3, subservice=9, ssc=3090, app_data=sid1)
-    # tc_queue.appendleft(command.pack_command_tuple())
-    # modify custom diag definition interval
-    # new_interval_command = sid2 + new_interval
-    # tc_queue.appendleft(("print", "Testing Service 3: Changing custom diag HK definition interval"))
-    # command = PusTelecommand(service=3, subservice=32, ssc=3090, app_data=new_interval_command)
-    # tc_queue.appendleft(command.pack_command_tuple())
-    # report custom diag definition
-    # tc_queue.appendleft(("print", "Testing Service 3: Reporting diag definition"))
-    # command = PusTelecommand(service=3, subservice=11, ssc=3100, app_data=sid2)
-    # tc_queue.appendleft(command.pack_command_tuple())
-    # append parameter to custom hk definiton
-    # append parameter to custom diag definition
 
-    # delete custom diag definition
-    # tc_queue.appendleft(("print", "Testing Service 3: Deleting custom diagnostics definition"))
-    # command = PusTelecommand(service=3, subservice=4, ssc=3120, app_data=sid2)
-    # tc_queue.appendleft(command.pack_command_tuple())