Location of rear window defogger relay on 2004 grand prix?

The 2004 Pontiac Grand Prix's rear window defogger relay isn't a standalone, easily identifiable relay like some other vehicles. Instead, its function is likely integrated into a larger power distribution module or body control module (BCM). There isn't a single, easily accessible relay specifically labeled "rear defroster."

To find the relevant component, you'll likely need to consult a wiring diagram specific to your 2004 Grand Prix. These diagrams show the electrical pathways and the components involved. You can usually find these diagrams:

* Online: Websites specializing in automotive repair manuals (like AllDataDIY or Chilton) often offer access to wiring diagrams for a fee.

* Repair Manual: A physical repair manual for your specific year and model will have the most detailed wiring diagrams.

Once you have the wiring diagram, you can trace the rear defroster circuit to identify the power distribution module or BCM and potentially a fuse or other protective component involved in its operation. Keep in mind working with car electrical systems can be dangerous, if you're not comfortable doing this work yourself, take it to a qualified mechanic.