diff --git a/thermal/1.0/vts/functional/Android.bp b/thermal/1.0/vts/functional/Android.bp
index 6bda558..d183bd8 100644
--- a/thermal/1.0/vts/functional/Android.bp
+++ b/thermal/1.0/vts/functional/Android.bp
@@ -19,6 +19,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalThermalV1_0TargetTest.cpp"],
     static_libs: ["android.hardware.thermal@1.0"],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/thermal/1.0/vts/functional/VtsHalThermalV1_0TargetTest.cpp b/thermal/1.0/vts/functional/VtsHalThermalV1_0TargetTest.cpp
index 6f059ef..aa1c0ce 100644
--- a/thermal/1.0/vts/functional/VtsHalThermalV1_0TargetTest.cpp
+++ b/thermal/1.0/vts/functional/VtsHalThermalV1_0TargetTest.cpp
@@ -21,11 +21,12 @@
 
 #define LOG_TAG "thermal_hidl_hal_test"
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/thermal/1.0/IThermal.h>
 #include <android/hardware/thermal/1.0/types.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <unistd.h>
 
 using ::android::hardware::hidl_string;
@@ -46,26 +47,11 @@
 #define MAX_DEVICE_TEMPERATURE 200
 #define MAX_FAN_SPEED 20000
 
-// Test environment for Thermal HIDL HAL.
-class ThermalHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
- public:
-  // get the test environment singleton
-  static ThermalHidlEnvironment* Instance() {
-    static ThermalHidlEnvironment* instance = new ThermalHidlEnvironment;
-    return instance;
-  }
-
-  virtual void registerTestServices() override { registerTestService<IThermal>(); }
- private:
-  ThermalHidlEnvironment() {}
-};
-
 // The main test class for THERMAL HIDL HAL.
-class ThermalHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class ThermalHidlTest : public testing::TestWithParam<std::string> {
  public:
   virtual void SetUp() override {
-    thermal_ = ::testing::VtsHalHidlTargetTestBase::getService<IThermal>(
-        ThermalHidlEnvironment::Instance()->getServiceName<IThermal>());
+    thermal_ = IThermal::getService(GetParam());
     ASSERT_NE(thermal_, nullptr);
     baseSize_ = 0;
     names_.clear();
@@ -178,7 +164,7 @@
 };
 
 // Sanity test for Thermal::getTemperatures().
-TEST_F(ThermalHidlTest, TemperatureTest) {
+TEST_P(ThermalHidlTest, TemperatureTest) {
   hidl_vec<Temperature> passed;
   for (size_t i = 0; i < MONITORING_OPERATION_NUMBER; ++i) {
     thermal_->getTemperatures(
@@ -193,7 +179,7 @@
 }
 
 // Sanity test for Thermal::getCpuUsages().
-TEST_F(ThermalHidlTest, CpuUsageTest) {
+TEST_P(ThermalHidlTest, CpuUsageTest) {
   hidl_vec<CpuUsage> passed;
   for (size_t i = 0; i < MONITORING_OPERATION_NUMBER; ++i) {
     thermal_->getCpuUsages(
@@ -208,7 +194,7 @@
 }
 
 // Sanity test for Thermal::getCoolingDevices().
-TEST_F(ThermalHidlTest, CoolingDeviceTest) {
+TEST_P(ThermalHidlTest, CoolingDeviceTest) {
   hidl_vec<CoolingDevice> passed;
   for (size_t i = 0; i < MONITORING_OPERATION_NUMBER; ++i) {
     thermal_->getCoolingDevices([&passed](
@@ -222,11 +208,7 @@
   }
 }
 
-int main(int argc, char** argv) {
-  ::testing::AddGlobalTestEnvironment(ThermalHidlEnvironment::Instance());
-  ::testing::InitGoogleTest(&argc, argv);
-  ThermalHidlEnvironment::Instance()->init(&argc, argv);
-  int status = RUN_ALL_TESTS();
-  LOG(INFO) << "Test result = " << status;
-  return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ThermalHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IThermal::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/thermal/1.1/vts/functional/Android.bp b/thermal/1.1/vts/functional/Android.bp
index 9a16c30..2c43d79 100644
--- a/thermal/1.1/vts/functional/Android.bp
+++ b/thermal/1.1/vts/functional/Android.bp
@@ -22,6 +22,5 @@
         "android.hardware.thermal@1.0",
         "android.hardware.thermal@1.1",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
-
diff --git a/thermal/1.1/vts/functional/VtsHalThermalV1_1TargetTest.cpp b/thermal/1.1/vts/functional/VtsHalThermalV1_1TargetTest.cpp
index 91c8b6e..bc7b2ee 100644
--- a/thermal/1.1/vts/functional/VtsHalThermalV1_1TargetTest.cpp
+++ b/thermal/1.1/vts/functional/VtsHalThermalV1_1TargetTest.cpp
@@ -17,10 +17,11 @@
 #include <android/hardware/thermal/1.1/IThermal.h>
 #include <android/hardware/thermal/1.1/IThermalCallback.h>
 #include <android/hardware/thermal/1.0/types.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include <VtsHalHidlTargetCallbackBase.h>
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 
 using ::android::hardware::thermal::V1_0::Temperature;
 using ::android::hardware::thermal::V1_0::TemperatureType;
@@ -63,26 +64,11 @@
     }
 };
 
-// Test environment for Thermal HIDL HAL.
-class ThermalHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static ThermalHidlEnvironment* Instance() {
-        static ThermalHidlEnvironment* instance = new ThermalHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IThermal>(); }
-   private:
-    ThermalHidlEnvironment() {}
-};
-
 // The main test class for THERMAL HIDL HAL 1.1.
-class ThermalHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class ThermalHidlTest : public testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        mThermal = ::testing::VtsHalHidlTargetTestBase::getService<IThermal>(
-            ThermalHidlEnvironment::Instance()->getServiceName<IThermal>());
+        mThermal = IThermal::getService(GetParam());
         ASSERT_NE(mThermal, nullptr);
         mThermalCallback = new(std::nothrow) ThermalCallback();
         ASSERT_NE(mThermalCallback, nullptr);
@@ -104,7 +90,7 @@
 // This just calls into and back from our local ThermalCallback impl.
 // Note: a real thermal throttling event from the Thermal HAL could be
 // inadvertently received here.
-TEST_F(ThermalHidlTest, NotifyThrottlingTest) {
+TEST_P(ThermalHidlTest, NotifyThrottlingTest) {
     auto ret = mThermalCallback->notifyThrottling(true, kThrottleTemp);
     ASSERT_TRUE(ret.isOk());
     auto res = mThermalCallback->WaitForCallback(kCallbackNameNotifyThrottling);
@@ -114,11 +100,7 @@
     EXPECT_EQ(kThrottleTemp, res.args->temperature);
 }
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(ThermalHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    ThermalHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    cout << "Test result = " << status << std::endl;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ThermalHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IThermal::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/thermal/2.0/vts/functional/Android.bp b/thermal/2.0/vts/functional/Android.bp
index f4e95f8..0940576 100644
--- a/thermal/2.0/vts/functional/Android.bp
+++ b/thermal/2.0/vts/functional/Android.bp
@@ -22,5 +22,6 @@
         "android.hardware.thermal@1.0",
         "android.hardware.thermal@2.0",
     ],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/thermal/2.0/vts/functional/VtsHalThermalV2_0TargetTest.cpp b/thermal/2.0/vts/functional/VtsHalThermalV2_0TargetTest.cpp
index d0f2e84..75536a6 100644
--- a/thermal/2.0/vts/functional/VtsHalThermalV2_0TargetTest.cpp
+++ b/thermal/2.0/vts/functional/VtsHalThermalV2_0TargetTest.cpp
@@ -18,9 +18,11 @@
 #include <android/hardware/thermal/2.0/IThermalChangedCallback.h>
 #include <android/hardware/thermal/2.0/types.h>
 
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
 #include <VtsHalHidlTargetCallbackBase.h>
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 
 using ::android::sp;
 using ::android::hardware::hidl_enum_range;
@@ -63,27 +65,11 @@
     }
 };
 
-// Test environment for Thermal HIDL HAL.
-class ThermalHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static ThermalHidlEnvironment* Instance() {
-        static ThermalHidlEnvironment* instance = new ThermalHidlEnvironment;
-        return instance;
-    }
-
-    void registerTestServices() override { registerTestService<IThermal>(); }
-
-   private:
-    ThermalHidlEnvironment() {}
-};
-
 // The main test class for THERMAL HIDL HAL 2.0.
-class ThermalHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class ThermalHidlTest : public testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        mThermal = ::testing::VtsHalHidlTargetTestBase::getService<IThermal>(
-            ThermalHidlEnvironment::Instance()->getServiceName<IThermal>());
+        mThermal = IThermal::getService(GetParam());
         ASSERT_NE(mThermal, nullptr);
         mThermalCallback = new (std::nothrow) ThermalCallback();
         ASSERT_NE(mThermalCallback, nullptr);
@@ -119,7 +105,7 @@
 // This just calls into and back from our local ThermalChangedCallback impl.
 // Note: a real thermal throttling event from the Thermal HAL could be
 // inadvertently received here.
-TEST_F(ThermalHidlTest, NotifyThrottlingTest) {
+TEST_P(ThermalHidlTest, NotifyThrottlingTest) {
     auto ret = mThermalCallback->notifyThrottling(kThrottleTemp);
     ASSERT_TRUE(ret.isOk());
     auto res = mThermalCallback->WaitForCallback(kCallbackNameNotifyThrottling);
@@ -129,7 +115,7 @@
 }
 
 // Test Thermal->registerThermalChangedCallback.
-TEST_F(ThermalHidlTest, RegisterThermalChangedCallbackTest) {
+TEST_P(ThermalHidlTest, RegisterThermalChangedCallbackTest) {
     // Expect to fail with same callback
     auto ret = mThermal->registerThermalChangedCallback(
             mThermalCallback, false, TemperatureType::SKIN,
@@ -159,7 +145,7 @@
 }
 
 // Test Thermal->unregisterThermalChangedCallback.
-TEST_F(ThermalHidlTest, UnregisterThermalChangedCallbackTest) {
+TEST_P(ThermalHidlTest, UnregisterThermalChangedCallbackTest) {
     sp<ThermalCallback> localThermalCallback = new (std::nothrow) ThermalCallback();
     // Expect to fail as the callback was not registered before
     auto ret = mThermal->unregisterThermalChangedCallback(
@@ -184,7 +170,7 @@
 }
 
 // Sanity test for Thermal::getCurrentTemperatures().
-TEST_F(ThermalHidlTest, TemperatureTest) {
+TEST_P(ThermalHidlTest, TemperatureTest) {
     mThermal->getCurrentTemperatures(false, TemperatureType::SKIN,
                                      [](ThermalStatus status, hidl_vec<Temperature> temperatures) {
                                          if (temperatures.size()) {
@@ -214,7 +200,7 @@
 }
 
 // Sanity test for Thermal::getTemperatureThresholds().
-TEST_F(ThermalHidlTest, TemperatureThresholdTest) {
+TEST_P(ThermalHidlTest, TemperatureThresholdTest) {
     mThermal->getTemperatureThresholds(
         false, TemperatureType::SKIN,
         [](ThermalStatus status, hidl_vec<TemperatureThreshold> temperatures) {
@@ -242,7 +228,7 @@
 }
 
 // Sanity test for Thermal::getCurrentCoolingDevices().
-TEST_F(ThermalHidlTest, CoolingDeviceTest) {
+TEST_P(ThermalHidlTest, CoolingDeviceTest) {
     mThermal->getCurrentCoolingDevices(
         false, CoolingType::CPU, [](ThermalStatus status, hidl_vec<CoolingDevice> cooling_devices) {
             if (cooling_devices.size()) {
@@ -271,11 +257,7 @@
     }
 }
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(ThermalHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    ThermalHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    cout << "Test result = " << status << std::endl;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ThermalHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IThermal::descriptor)),
+        android::hardware::PrintInstanceNameToString);