Set Up Google Consent Mode v2

Last updated: March 18, 20266 min readIntermediateBrandDeveloper

Google Consent Mode v2 allows Google tags to adapt their behavior based on user consent. Arqam360 automatically fires GCM v2 signals — here's how to verify and optimize the setup.

What is Consent Mode v2?

Consent Mode v2 is Google's framework for adjusting how Google tags operate based on visitor consent choices. It enables cookieless measurement and conversion modeling when visitors deny consent.

GCM v2 Parameters

analytics_storage — Controls Google Analytics cookies
ad_storage — Controls Google Ads cookies
ad_user_data — Controls sending user data to Google Ads
ad_personalization — Controls ad personalization features
functionality_storage — Controls functionality cookies
personalization_storage — Controls personalization cookies
security_storage — Controls security-related cookies (always granted)

Setup

Install Arqam360

Deploy the widget on your site. GCM v2 is enabled by default — no extra configuration needed.

Verify default signals

Open browser console → check that gtag('consent', 'default', {...}) fires on page load with all parameters set to 'denied'.

Test consent update

Accept cookies → verify gtag('consent', 'update', {...}) fires with the appropriate parameters set to 'granted'.

Google Consent Mode signals in browser console — Browser console showing GCM v2 default and update signals.

Verify in Google Tag Assistant

Open Google Tag Assistant (tagassistant.google.com), connect to your site, and check the Consent tab. You should see consent state changes reflected in real time.

If Google Ads shows 'No consent signal detected', ensure the Arqam360 script loads BEFORE the Google tag. Set tag priority to 999 in GTM or place the script first in your HTML.