To find it, you'll likely need to:
1. Consult your owner's manual: This is the best place to start. It will have a diagram showing the fuse box location and possibly the flasher relay's position.
2. Look in the fuse box: Many fuse boxes have a section for relays. The relay is usually a square or rectangular component that you can pull out and replace.
3. Check behind the dashboard: If it's not in the main fuse box, it may be behind a panel on the driver's side of the dashboard. You might need to remove a panel to access it. Sometimes it’s attached directly to the back of the dash.
4. Use a wiring diagram: If you can't find it visually, a wiring diagram for your specific year and model Tahoe will be your best bet to trace the hazard light circuit.
Important Note: Before working with electrical components, disconnect the negative battery terminal to avoid accidental short circuits or damage.