diff --git a/Marlin/M100_Free_Mem_Chk.cpp b/Marlin/M100_Free_Mem_Chk.cpp
index 6033c0afe3..276df98eb1 100644
--- a/Marlin/M100_Free_Mem_Chk.cpp
+++ b/Marlin/M100_Free_Mem_Chk.cpp
@@ -180,10 +180,10 @@ void gcode_M100() {
     x = code_value();
     SERIAL_ECHOLNPGM("Corrupting free memory block.\n");
     ptr = (unsigned char*) __brkval;
-    SERIAL_ECHOPAIR("\n__brkval : ", (long) ptr);
+    SERIAL_ECHOPAIR("\n__brkval : ", ptr);
     ptr += 8;
     sp = top_of_stack();
-    SERIAL_ECHOPAIR("\nStack Pointer : ", (long) sp);
+    SERIAL_ECHOPAIR("\nStack Pointer : ", sp);
     SERIAL_ECHOLNPGM("\n");
     n = sp - ptr - 64;    // -64 just to keep us from finding interrupt activity that
     // has altered the stack.
@@ -204,10 +204,10 @@ void gcode_M100() {
   if (m100_not_initialized || code_seen('I')) {       // If no sub-command is specified, the first time
     SERIAL_ECHOLNPGM("Initializing free memory block.\n");    // this happens, it will Initialize.
     ptr = (unsigned char*) __brkval;        // Repeated M100 with no sub-command will not destroy the
-    SERIAL_ECHOPAIR("\n__brkval : ", (long) ptr);     // state of the initialized free memory pool.
+    SERIAL_ECHOPAIR("\n__brkval : ", ptr);     // state of the initialized free memory pool.
     ptr += 8;
     sp = top_of_stack();
-    SERIAL_ECHOPAIR("\nStack Pointer : ", (long) sp);
+    SERIAL_ECHOPAIR("\nStack Pointer : ", sp);
     SERIAL_ECHOLNPGM("\n");
     n = sp - ptr - 64;    // -64 just to keep us from finding interrupt activity that
     // has altered the stack.
@@ -217,7 +217,7 @@ void gcode_M100() {
       *(ptr + i) = (unsigned char) 0xe5;
     for (i = 0; i < n; i++) {
       if (*(ptr + i) != (unsigned char) 0xe5) {
-        SERIAL_ECHOPAIR("? address : ", (unsigned long) ptr + i);
+        SERIAL_ECHOPAIR("? address : ", ptr + i);
         SERIAL_ECHOPAIR("=", *(ptr + i));
         SERIAL_ECHOLNPGM("\n");
       }
diff --git a/Marlin/Marlin.h b/Marlin/Marlin.h
index c6274056c1..61bb33a21a 100644
--- a/Marlin/Marlin.h
+++ b/Marlin/Marlin.h
@@ -101,13 +101,15 @@ extern const char echomagic[] PROGMEM;
 #define SERIAL_ECHOLN(x) SERIAL_PROTOCOLLN(x)
 #define SERIAL_ECHOLNPGM(x) SERIAL_PROTOCOLLNPGM(x)
 
-#define SERIAL_ECHOPAIR(name,value) do{ serial_echopair_P(PSTR(name),(value)); }while(0)
+#define SERIAL_ECHOPAIR(name,value) (serial_echopair_P(PSTR(name),(value)))
 
 void serial_echopair_P(const char* s_P, int v);
 void serial_echopair_P(const char* s_P, long v);
 void serial_echopair_P(const char* s_P, float v);
 void serial_echopair_P(const char* s_P, double v);
 void serial_echopair_P(const char* s_P, unsigned long v);
+FORCE_INLINE void serial_echopair_P(const char* s_P, bool v) { serial_echopair_P(s_P, (int)v); }
+FORCE_INLINE void serial_echopair_P(const char* s_P, void *v) { serial_echopair_P(s_P, (unsigned long)v); }
 
 // Things to write to serial from Program memory. Saves 400 to 2k of RAM.
 FORCE_INLINE void serialprintPGM(const char* str) {
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 1deabb4770..9e1f9115dc 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -1170,7 +1170,7 @@ XYZ_CONSTS_FROM_CONFIG(signed char, home_dir, HOME_DIR);
 static void set_axis_is_at_home(AxisEnum axis) {
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
-      SERIAL_ECHOPAIR("set_axis_is_at_home(", (unsigned long)axis);
+      SERIAL_ECHOPAIR("set_axis_is_at_home(", axis);
       SERIAL_ECHOLNPGM(") >>>");
     }
   #endif
@@ -1258,7 +1258,7 @@ static void set_axis_is_at_home(AxisEnum axis) {
   }
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
-      SERIAL_ECHOPAIR("<<< set_axis_is_at_home(", (unsigned long)axis);
+      SERIAL_ECHOPAIR("<<< set_axis_is_at_home(", axis);
       SERIAL_ECHOLNPGM(")");
     }
   #endif
@@ -1653,7 +1653,7 @@ static void setup_for_endstop_move() {
           if (doRaise) {
             #if ENABLED(DEBUG_LEVELING_FEATURE)
               if (DEBUGGING(LEVELING)) {
-                SERIAL_ECHOPAIR("Raise Z (after) by ", (float)Z_RAISE_AFTER_PROBING);
+                SERIAL_ECHOPAIR("Raise Z (after) by ", Z_RAISE_AFTER_PROBING);
                 SERIAL_EOL;
                 SERIAL_ECHO("> SERVO_ENDSTOPS > raise_z_after_probing()");
                 SERIAL_EOL;
@@ -1749,7 +1749,7 @@ static void setup_for_endstop_move() {
     #if ENABLED(DEBUG_LEVELING_FEATURE)
       if (DEBUGGING(LEVELING)) {
         SERIAL_ECHOLNPGM("probe_pt >>>");
-        SERIAL_ECHOPAIR("> ProbeAction:", (unsigned long)probe_action);
+        SERIAL_ECHOPAIR("> ProbeAction:", probe_action);
         SERIAL_EOL;
         DEBUG_POS("", current_position);
       }
@@ -1970,7 +1970,7 @@ static void setup_for_endstop_move() {
 static void homeaxis(AxisEnum axis) {
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
-      SERIAL_ECHOPAIR(">>> homeaxis(", (unsigned long)axis);
+      SERIAL_ECHOPAIR(">>> homeaxis(", axis);
       SERIAL_ECHOLNPGM(")");
     }
   #endif
@@ -2158,7 +2158,7 @@ static void homeaxis(AxisEnum axis) {
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
-      SERIAL_ECHOPAIR("<<< homeaxis(", (unsigned long)axis);
+      SERIAL_ECHOPAIR("<<< homeaxis(", axis);
       SERIAL_ECHOLNPGM(")");
     }
   #endif
@@ -2486,7 +2486,7 @@ inline void gcode_G28() {
         feedrate = max_feedrate[Z_AXIS] * 60;  // feedrate (mm/m) = max_feedrate (mm/s)
         #if ENABLED(DEBUG_LEVELING_FEATURE)
           if (DEBUGGING(LEVELING)) {
-            SERIAL_ECHOPAIR("Raise Z (before homing) to ", (float)(MIN_Z_HEIGHT_FOR_HOMING));
+            SERIAL_ECHOPAIR("Raise Z (before homing) to ", (MIN_Z_HEIGHT_FOR_HOMING));
             SERIAL_EOL;
             DEBUG_POS("> (home_all_axis || homeZ)", current_position);
             DEBUG_POS("> (home_all_axis || homeZ)", destination);
@@ -3117,7 +3117,7 @@ inline void gcode_G28() {
           if (probePointCounter) {
             #if ENABLED(DEBUG_LEVELING_FEATURE)
               if (DEBUGGING(LEVELING)) {
-                SERIAL_ECHOPAIR("z_before = (between) ", (float)(Z_RAISE_BETWEEN_PROBINGS + current_position[Z_AXIS]));
+                SERIAL_ECHOPAIR("z_before = (between) ", (Z_RAISE_BETWEEN_PROBINGS + current_position[Z_AXIS]));
                 SERIAL_EOL;
               }
             #endif
@@ -3125,7 +3125,7 @@ inline void gcode_G28() {
           else {
             #if ENABLED(DEBUG_LEVELING_FEATURE)
               if (DEBUGGING(LEVELING)) {
-                SERIAL_ECHOPAIR("z_before = (before) ", (float)Z_RAISE_BEFORE_PROBING);
+                SERIAL_ECHOPAIR("z_before = (before) ", Z_RAISE_BEFORE_PROBING);
                 SERIAL_EOL;
               }
             #endif
@@ -3483,6 +3483,9 @@ inline void gcode_G92() {
   inline void gcode_M0_M1() {
     char* args = current_command_args;
 
+    uint8_t test_value = 12;
+    SERIAL_ECHOPAIR("TEST", test_value);
+
     millis_t codenum = 0;
     bool hasP = false, hasS = false;
     if (code_seen('P')) {
diff --git a/Marlin/configuration_store.cpp b/Marlin/configuration_store.cpp
index 83bd8450bd..3f22b2f8c6 100644
--- a/Marlin/configuration_store.cpp
+++ b/Marlin/configuration_store.cpp
@@ -328,7 +328,7 @@ void Config_StoreSettings()  {
 
   // Report storage size
   SERIAL_ECHO_START;
-  SERIAL_ECHOPAIR("Settings Stored (", (unsigned long)i);
+  SERIAL_ECHOPAIR("Settings Stored (", i);
   SERIAL_ECHOLNPGM(" bytes)");
 }
 
@@ -507,7 +507,7 @@ void Config_RetrieveSettings() {
     // Report settings retrieved and length
     SERIAL_ECHO_START;
     SERIAL_ECHO(ver);
-    SERIAL_ECHOPAIR(" stored settings retrieved (", (unsigned long)i);
+    SERIAL_ECHOPAIR(" stored settings retrieved (", i);
     SERIAL_ECHOLNPGM(" bytes)");
   }
 
@@ -730,9 +730,9 @@ void Config_PrintSettings(bool forReplay) {
       SERIAL_ECHOLNPGM("Mesh bed leveling:");
       CONFIG_ECHO_START;
     }
-    SERIAL_ECHOPAIR("  M420 S", (unsigned long)mbl.active);
-    SERIAL_ECHOPAIR(" X", (unsigned long)MESH_NUM_X_POINTS);
-    SERIAL_ECHOPAIR(" Y", (unsigned long)MESH_NUM_Y_POINTS);
+    SERIAL_ECHOPAIR("  M420 S", mbl.active);
+    SERIAL_ECHOPAIR(" X", MESH_NUM_X_POINTS);
+    SERIAL_ECHOPAIR(" Y", MESH_NUM_Y_POINTS);
     SERIAL_EOL;
     for (uint8_t y = 0; y < MESH_NUM_Y_POINTS; y++) {
       for (uint8_t x = 0; x < MESH_NUM_X_POINTS; x++) {
@@ -783,14 +783,14 @@ void Config_PrintSettings(bool forReplay) {
       SERIAL_ECHOLNPGM("Material heatup parameters:");
       CONFIG_ECHO_START;
     }
-    SERIAL_ECHOPAIR("  M145 S0 H", (unsigned long)plaPreheatHotendTemp);
-    SERIAL_ECHOPAIR(" B", (unsigned long)plaPreheatHPBTemp);
-    SERIAL_ECHOPAIR(" F", (unsigned long)plaPreheatFanSpeed);
+    SERIAL_ECHOPAIR("  M145 S0 H", plaPreheatHotendTemp);
+    SERIAL_ECHOPAIR(" B", plaPreheatHPBTemp);
+    SERIAL_ECHOPAIR(" F", plaPreheatFanSpeed);
     SERIAL_EOL;
     CONFIG_ECHO_START;
-    SERIAL_ECHOPAIR("  M145 S1 H", (unsigned long)absPreheatHotendTemp);
-    SERIAL_ECHOPAIR(" B", (unsigned long)absPreheatHPBTemp);
-    SERIAL_ECHOPAIR(" F", (unsigned long)absPreheatFanSpeed);
+    SERIAL_ECHOPAIR("  M145 S1 H", absPreheatHotendTemp);
+    SERIAL_ECHOPAIR(" B", absPreheatHPBTemp);
+    SERIAL_ECHOPAIR(" F", absPreheatFanSpeed);
     SERIAL_EOL;
   #endif // ULTIPANEL
 
@@ -805,7 +805,7 @@ void Config_PrintSettings(bool forReplay) {
         if (forReplay) {
           for (uint8_t i = 0; i < EXTRUDERS; i++) {
             CONFIG_ECHO_START;
-            SERIAL_ECHOPAIR("  M301 E", (unsigned long)i);
+            SERIAL_ECHOPAIR("  M301 E", i);
             SERIAL_ECHOPAIR(" P", PID_PARAM(Kp, i));
             SERIAL_ECHOPAIR(" I", unscalePID_i(PID_PARAM(Ki, i)));
             SERIAL_ECHOPAIR(" D", unscalePID_d(PID_PARAM(Kd, i)));
@@ -848,7 +848,7 @@ void Config_PrintSettings(bool forReplay) {
       SERIAL_ECHOLNPGM("LCD Contrast:");
       CONFIG_ECHO_START;
     }
-    SERIAL_ECHOPAIR("  M250 C", (unsigned long)lcd_contrast);
+    SERIAL_ECHOPAIR("  M250 C", lcd_contrast);
     SERIAL_EOL;
   #endif
 
@@ -882,7 +882,7 @@ void Config_PrintSettings(bool forReplay) {
       SERIAL_ECHOLNPGM("Auto-Retract: S=0 to disable, 1 to interpret extrude-only moves as retracts or recoveries");
       CONFIG_ECHO_START;
     }
-    SERIAL_ECHOPAIR("  M209 S", (unsigned long)(autoretract_enabled ? 1 : 0));
+    SERIAL_ECHOPAIR("  M209 S", (autoretract_enabled ? 1 : 0));
     SERIAL_EOL;
 
   #endif // FWRETRACT
diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index 5d2761f1fd..a371361c28 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -294,20 +294,20 @@ void checkHitEndstops() {
     SERIAL_ECHO_START;
     SERIAL_ECHOPGM(MSG_ENDSTOPS_HIT);
     if (TEST(endstop_hit_bits, X_MIN)) {
-      SERIAL_ECHOPAIR(" X:", (float)endstops_trigsteps[X_AXIS] / axis_steps_per_unit[X_AXIS]);
+      SERIAL_ECHOPAIR(" X:", endstops_trigsteps[X_AXIS] / axis_steps_per_unit[X_AXIS]);
       LCD_MESSAGEPGM(MSG_ENDSTOPS_HIT "X");
     }
     if (TEST(endstop_hit_bits, Y_MIN)) {
-      SERIAL_ECHOPAIR(" Y:", (float)endstops_trigsteps[Y_AXIS] / axis_steps_per_unit[Y_AXIS]);
+      SERIAL_ECHOPAIR(" Y:", endstops_trigsteps[Y_AXIS] / axis_steps_per_unit[Y_AXIS]);
       LCD_MESSAGEPGM(MSG_ENDSTOPS_HIT "Y");
     }
     if (TEST(endstop_hit_bits, Z_MIN)) {
-      SERIAL_ECHOPAIR(" Z:", (float)endstops_trigsteps[Z_AXIS] / axis_steps_per_unit[Z_AXIS]);
+      SERIAL_ECHOPAIR(" Z:", endstops_trigsteps[Z_AXIS] / axis_steps_per_unit[Z_AXIS]);
       LCD_MESSAGEPGM(MSG_ENDSTOPS_HIT "Z");
     }
     #if ENABLED(Z_MIN_PROBE_ENDSTOP)
       if (TEST(endstop_hit_bits, Z_MIN_PROBE)) {
-        SERIAL_ECHOPAIR(" Z_MIN_PROBE:", (float)endstops_trigsteps[Z_AXIS] / axis_steps_per_unit[Z_AXIS]);
+        SERIAL_ECHOPAIR(" Z_MIN_PROBE:", endstops_trigsteps[Z_AXIS] / axis_steps_per_unit[Z_AXIS]);
         LCD_MESSAGEPGM(MSG_ENDSTOPS_HIT "ZP");
       }
     #endif