GMC Envoy 2002-2009 fuse box and relay Diagrams

Learn about GMC Envoy 2002-2009 fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.

The GMC Envoy (2002-2009) is a midsize SUV that offers a rugged yet stylish design, appealing to those seeking both comfort and utility. Available in two main body styles—a standard five-passenger SUV and an extended-wheelbase XL version with three rows—the Envoy is ideal for families and outdoor enthusiasts alike. The Envoy also includes the performance-focused Envoy Denali trim, which enhances luxury with added features.

In terms of its electrical system, the fuse box and relays are crucial for powering key functions such as the headlights, climate control, and power windows. The fuse box is located under the hood on the driver’s side, while an additional fuse panel may be located inside the cabin, depending on the model. Relays, also found in these panels, manage high-power functions like the starter motor and fuel pump. Ensuring these components are well-maintained helps keep the Envoy’s features operational and reliable.

MUST READ: DYI – How to Check Car Fuses?

(2002-2009) GMC Envoy fuse box and relay with Diagram

WARNING

• Never replace a fuse with one that has a higher amperage rating.
• A fuse with a too-high amperage could damage the electrical part and cause a fire.
• On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
• If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
• Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

GMC Envoy 2002-2009 fuse assignment

GMC Envoy Year of production: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009

Location of Fuse Boxes

Engine Compartment Fuse Block:

The fuse block is located under the hood in the engine compartment on the driver’s side of the vehicle.

1. Remove the primary cover by pressing the two locking tabs.
2. Remove the secondary cover by snapping off while lifting.
3. To reinstall the fuse panel cover, reverse the sequence.

Rear Underseat Fuse Block:

The rear underseat fuse block is located under the rear seat on the driver’s side of the vehicle.

Fuse Box Diagrams

2002

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2002)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2002)

2003

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2003)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2003)

2004

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2004)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2004)

2005

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2005)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2005)

2006

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2006)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2006)

2007

Engine Compartment Fuse Block

L6 Engine

List of fuses in the Engine Compartment Fuse Block (L6) (2007)

V8 Engine

List of fuses in the Engine Compartment Fuse Block (V8) (2007)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2007)

2008

Engine Compartment Fuse Block

L6 Engine

List of fuses in the Engine Compartment Fuse Block (L6) (2008)

V8 Engine

List of fuses in the Engine Compartment Fuse Block (V8) (2008)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2008)

2009

Engine Compartment Fuse Block

List of fuses in the Engine Compartment Fuse Block (2009)

Rear Underseat Fuse Block

List of fuses in the Rear Underseat Fuse Block (2009)

Conclusion

The GMC Envoy’s range of body styles suits different lifestyles, while its fuse box and relay components are essential for managing electrical functions across its trims. Regular inspection of these parts is key to maintaining the vehicle’s reliability and performance.