diff --git a/esmvalcore/cmor/_fixes/cmip6/gfdl_cm4.py b/esmvalcore/cmor/_fixes/cmip6/gfdl_cm4.py
index fdc349d08a..7cdf0e9031 100644
--- a/esmvalcore/cmor/_fixes/cmip6/gfdl_cm4.py
+++ b/esmvalcore/cmor/_fixes/cmip6/gfdl_cm4.py
@@ -68,30 +68,24 @@ def fix_metadata(self, cubes):
         return cubes
 
 
-class Uas(Fix):
-    """Fixes for uas."""
+class Tasmin(Tas):
+    """Fixes for tasmin."""
 
-    def fix_metadata(self, cubes):
-        """
-        Add height (10m) coordinate.
 
-        Parameters
-        ----------
-        cubes : iris.cube.CubeList
-            Input cubes.
+class Tasmax(Tas):
+    """Fixes for tasmax."""
 
-        Returns
-        -------
-        iris.cube.CubeList
 
-        """
-        cube = self.get_cube_from_list(cubes)
-        add_scalar_height_coord(cube, 10.0)
-        return cubes
+class SfcWind(Tas):
+    """Fixes for sfcWind."""
 
 
-class Vas(Fix):
-    """Fixes for vas."""
+class Hurs(Tas):
+    """Fixes for hurs."""
+
+
+class Uas(Fix):
+    """Fixes for uas."""
 
     def fix_metadata(self, cubes):
         """
@@ -112,6 +106,10 @@ def fix_metadata(self, cubes):
         return cubes
 
 
+class Vas(Uas):
+    """Fixes for vas."""
+
+
 Omon = BaseOmon
 
 
diff --git a/esmvalcore/cmor/_fixes/cmip6/kiost_esm.py b/esmvalcore/cmor/_fixes/cmip6/kiost_esm.py
index 77ab4805e5..e06922a0af 100644
--- a/esmvalcore/cmor/_fixes/cmip6/kiost_esm.py
+++ b/esmvalcore/cmor/_fixes/cmip6/kiost_esm.py
@@ -35,6 +35,14 @@ class Huss(Tas):
     """Fixes for huss."""
 
 
+class Tasmin(Tas):
+    """Fixes for tasmin."""
+
+
+class Tasmax(Tas):
+    """Fixes for tasmax."""
+
+
 class SfcWind(Fix):
     """Fixes for sfcWind."""
 
diff --git a/tests/integration/cmor/_fixes/cmip6/test_gfdl_cm4.py b/tests/integration/cmor/_fixes/cmip6/test_gfdl_cm4.py
index f28310c6c2..46b4424f52 100644
--- a/tests/integration/cmor/_fixes/cmip6/test_gfdl_cm4.py
+++ b/tests/integration/cmor/_fixes/cmip6/test_gfdl_cm4.py
@@ -10,11 +10,14 @@
     Fgco2,
     Omon,
     Siconc,
+    Tas,
+    Uas,
 )
 from esmvalcore.cmor._fixes.common import SiconcFixScalarCoord
 from esmvalcore.cmor._fixes.fix import GenericFix
 from esmvalcore.cmor.fix import Fix
 from esmvalcore.cmor.table import get_var_info
+from cf_units import Unit
 
 
 def test_get_cl_fix():
@@ -116,3 +119,103 @@ def test_get_siconc_fix():
 def test_siconc_fix():
     """Test fix for ``siconc``."""
     assert Siconc is SiconcFixScalarCoord
+
+
+@pytest.fixture
+def tas_cubes():
+    correct_lat_coord = iris.coords.DimCoord([0.0],
+                                             var_name='lat',
+                                             standard_name='latitude')
+    wrong_lat_coord = iris.coords.DimCoord([0.0],
+                                           var_name='latitudeCoord',
+                                           standard_name='latitude')
+    correct_lon_coord = iris.coords.DimCoord([0.0],
+                                             var_name='lon',
+                                             standard_name='longitude')
+    wrong_lon_coord = iris.coords.DimCoord([0.0],
+                                           var_name='longitudeCoord',
+                                           standard_name='longitude')
+    correct_cube = iris.cube.Cube([[2.0]],
+                                  var_name='tas',
+                                  dim_coords_and_dims=[(correct_lat_coord, 0),
+                                                       (correct_lon_coord, 1)])
+    wrong_cube = iris.cube.Cube([[2.0]],
+                                var_name='ta',
+                                dim_coords_and_dims=[(wrong_lat_coord, 0),
+                                                     (wrong_lon_coord, 1)])
+    scalar_cube = iris.cube.Cube(0.0, var_name='ps')
+    return iris.cube.CubeList([correct_cube, wrong_cube, scalar_cube])
+
+
+def test_get_tas_fix():
+    fixes = Fix.get_fixes('CMIP6', 'GFDL-CM4', 'day', 'tas')
+    assert Tas(None) in fixes
+
+
+def test_tas_fix_metadata(tas_cubes):
+    for cube in tas_cubes:
+        with pytest.raises(iris.exceptions.CoordinateNotFoundError):
+            cube.coord('height')
+    height_coord = iris.coords.AuxCoord(2.0,
+                                        var_name='height',
+                                        standard_name='height',
+                                        long_name='height',
+                                        units=Unit('m'),
+                                        attributes={'positive': 'up'})
+    vardef = get_var_info('CMIP6', 'day', 'tas')
+    fix = Tas(vardef)
+
+    out_cubes = fix.fix_metadata(tas_cubes)
+    assert out_cubes[0].var_name == 'tas'
+    coord = out_cubes[0].coord('height')
+    assert coord == height_coord
+
+
+@pytest.fixture
+def uas_cubes():
+    correct_lat_coord = iris.coords.DimCoord([0.0],
+                                             var_name='lat',
+                                             standard_name='latitude')
+    wrong_lat_coord = iris.coords.DimCoord([0.0],
+                                           var_name='latitudeCoord',
+                                           standard_name='latitude')
+    correct_lon_coord = iris.coords.DimCoord([0.0],
+                                             var_name='lon',
+                                             standard_name='longitude')
+    wrong_lon_coord = iris.coords.DimCoord([0.0],
+                                           var_name='longitudeCoord',
+                                           standard_name='longitude')
+    correct_cube = iris.cube.Cube([[10.0]],
+                                  var_name='uas',
+                                  dim_coords_and_dims=[(correct_lat_coord, 0),
+                                                       (correct_lon_coord, 1)])
+    wrong_cube = iris.cube.Cube([[10.0]],
+                                var_name='ua',
+                                dim_coords_and_dims=[(wrong_lat_coord, 0),
+                                                     (wrong_lon_coord, 1)])
+    scalar_cube = iris.cube.Cube(0.0, var_name='ps')
+    return iris.cube.CubeList([correct_cube, wrong_cube, scalar_cube])
+
+
+def test_get_uas_fix():
+    fixes = Fix.get_fixes('CMIP6', 'GFDL-CM4', 'day', 'uas')
+    assert Uas(None) in fixes
+
+
+def test_uas_fix_metadata(uas_cubes):
+    for cube in uas_cubes:
+        with pytest.raises(iris.exceptions.CoordinateNotFoundError):
+            cube.coord('height')
+    height_coord = iris.coords.AuxCoord(10.0,
+                                        var_name='height',
+                                        standard_name='height',
+                                        long_name='height',
+                                        units=Unit('m'),
+                                        attributes={'positive': 'up'})
+    vardef = get_var_info('CMIP6', 'day', 'uas')
+    fix = Uas(vardef)
+
+    out_cubes = fix.fix_metadata(uas_cubes)
+    assert out_cubes[0].var_name == 'uas'
+    coord = out_cubes[0].coord('height')
+    assert coord == height_coord