Register warranties and send GPT-4o-mini reminders with GoHighLevel and Sheets

by Rahul Joshi ✓ · 6 views · created 2026-10-05 · Lead Nurturing, AI Summarization

What this workflow does

This AI workflow has 29 nodes and runs when someone submits an n8n form (“Register Your Warranty”) (plus 2 other triggers). Along the way it connects Google Sheets and OpenAI.

How it runs

Trigger: When someone submits an n8n form (“Register Your Warranty”) (plus 2 other triggers).

1. Set Registration Config (Edit Fields (Set)): sets 19 fields: dealer_name, dealer_phone, dealer_address…
2. Set Reminder Config (Edit Fields (Set)): sets 19 fields: dealer_name, dealer_phone, dealer_address…
3. Normalize Registration Data (Code): runs custom JavaScript code
4. Get Warranty Registry (Google Sheets): uses Google Sheets
5. Get Existing Registrations (Google Sheets): uses Google Sheets
6. Plan Due Reminders (Code): runs custom JavaScript code
7. Skip Duplicate Serials (Code): runs custom JavaScript code
8. AI Write Reminder Copy (OpenAI): uses OpenAI
9. Upsert Contact in GHL (HTTP Request): calls an HTTP API (POST)
10. Compose Reminder Messages (Code): runs custom JavaScript code

…plus 16 more steps. See the full node list below.

Services it uses

Google SheetsOpenAI

Before you upgrade to n8n 3.0

Nodes used (9)

• n8n Form Triggern8n-nodes-base.formTrigger
• Webhookn8n-nodes-base.webhook
• Edit Fields (Set)n8n-nodes-base.set
• Coden8n-nodes-base.code
• Google Sheetsn8n-nodes-base.googleSheets
• HTTP Requestn8n-nodes-base.httpRequest
• Schedule Triggern8n-nodes-base.scheduleTrigger
• OpenAI@n8n/n8n-nodes-langchain.openAi
• Ifn8n-nodes-base.if

From the author

Quick overview This workflow captures warranty registrations from an n8n Form or a webhook, saves each product to a Google Sheets warranty registry, and upserts the buyer into GoHighLevel with tags, notes, and a welcome SMS/email certificate; it also runs…

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