diff --git a/tarteaucitron.services.js b/tarteaucitron.services.js
index 9d60bd3..8bb8fd7 100644
--- a/tarteaucitron.services.js
+++ b/tarteaucitron.services.js
@@ -371,6 +371,28 @@ tarteaucitron.services.googlemaps = {
     }
 };
 
+// google tag manager
+tarteaucitron.services.googletagmanager = {
+    "key": "googletagmanager",
+    "type": "api",
+    "name": "Google Tag Manager",
+    "uri": "http://www.google.com/ads/preferences/",
+    "needConsent": true,
+    "cookies": ['_ga', '_gat', '__utma', '__utmb', '__utmc', '__utmt', '__utmz'],
+    "js": function () {
+        "use strict";
+        if (tarteaucitron.user.googletagmanagerId === undefined) {
+            return;
+        }
+        window.dataLayer = window.dataLayer || [];
+        window.dataLayer.push({
+            'gtm.start': new Date().getTime(),
+            event: 'gtm.js'
+        });
+        tarteaucitron.addScript('//www.googletagmanager.com/gtm.js?id=' + tarteaucitron.user.googletagmanagerId);
+    }
+};
+
 // jsapi
 tarteaucitron.services.jsapi = {
     "key": "jsapi",