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2002-2009 Chevrolet Trailblazer | GMC Envoy Fuse Box Location

This guide shows the location of the fuse box on your Chevrolet Trailblazer / GMC Envoy. At the end of the article, you can also see a complete list of fuse assignments.

 2002-2009 Chevrolet Trailblazer | GMC Envoy Fuse Box Location
ESTIMATED TIME 15 min
DIY COST $0-$5
DIFFICULTY Very Easy

 

Make: Chevrolet, GMC
Model: Trailblazer, Envoy
Years: 2002 2003 2004 2005 2006 2007 2008 2009
Difficulty: Easy

What you will need 

Main Fuse Box - Engine Bay

trailblazer fuse box location

The main fuse block is located in the engine bay. Open the hood and look on the driver's side. You will see the fuse box. Remove the fuse box cover to access the fuses underneath.

Mini Fuses

  • 1 ECAS
  • 2 Passenger Side High-Beam Headlamp
  • 3 Passenger Side Low-Beam Headlamp
  • 4 Back-Up Trailer Lamps
  • 5 Driver Side High-Beam Headlamp
  • 6 Driver Side Low-Beam Headlamp
  • 7 WASH
  • 8 ATC
  • 9 Windshield Wipers
  • 10 Powertrain Control Module B
  • 11 Fog Lamps
  • 12 ST/LP
  • 13 Cigarette Lighter
  • 14 COILS
  • 15 RIDE
  • 16 TBD Ignition 1
  • 17 Crank
  • 18 Air Bag
  • 19 ELEK Brake
  • 20 Cooling Fan
  • 21 Horn
  • 22 Ignition E
  • 23 ETC
  • 24 Instrument Panel Cluster, Driver Information Center
  • 25 Automatic Shift Lock Control System
  • 26 ENG 1
  • 27 Back-Up
  • 28 Powertrain Control Module 1
  • 29 Oxygen Sensor
  • 30 Air Conditioning
  • 31 TBC
  • 50 Passenger Side Trailer TRN
  • 51 Driver Side Trailer TRN
  • 52 Hazard Flashers

J-Case Fuses Usage

  • 32 Trailer
  • 33 Anti-Lock Brakes (ABS)
  • 34 Ignition A
  • 35 Blower Motor
  • 36 Ignition B
  • 37 Blank
  • 38 Rear Window Washer
  • 39 Fog Lamps
  • 40 Horn
  • 41 Fuel Pump
  • 42 Windshield Wipers/Washer
  • 43 High-Beam Headlamp
  • 44 Air Conditioning

Solid State Relays

  • 45 Cooling Fan
  • 46 HDM

Mini Relay Usage

  • 47 Starter
  • Miscellaneous Usage
  • 48 Instrument Panel Battery
  • 49 Fuse Puller

Rear Underseat Fuse Block

trailblazer fuse box gmc envoy 2002 2003 2004 2005 2006

The interior fuses are located under the rear seat on the driver's side. To access the fuses under the rear seat, start by tilting the rear seat forward. Remove the cover, and underneath, you will see the fuses.

Fuse Usage

  • 01 Right Door Control Module
  • 02 Left Door Control Module
  • 03 LGM 2
  • 04 TBC 3
  • 05 Rear Fog Lamps
  • 06 LGM/DSM
  • 07 TBC 2
  • 08 Power Seats
  • 09 Blank
  • 10 DDM
  • 11 AMP
  • 12 PDM
  • 13 Rear Climate Controls
  • 14 Left Rear Parking Lamps
  • 15 Auxiliary Power 2
  • 16 VEH CHMSL
  • 17 Right Rear Parking Lamps
  • 18 LOCKS
  • 19 Blank
  • 20 Sunroof
  • 21 LOCK
  • 23 Blank
  • 24 UNLOCK
  • 25 Blank
  • 26 Blank
  • 27 OH Battery/OnStar System
  • 29 Rainsense Wipers
  • 30 Parking Lamps
  • 31 TBC 4CC
  • 32 TBC5
  • 33 Front Wipers
  • 34 VEH STOP
  • 35 Blank
  • 36 HVAC B
  • 37 Front Parking Lamps
  • 38 Left Turn Signal
  • 39 HVAC 1
  • 40 TBC 4
  • 41 Radio
  • 42 TR PARK
  • 43 Right Turn Signal
  • 44 HVAC
  • 45 Rear Fog Lamps
  • 46 Auxiliary Power 1
  • 47 Ignition 0
  • 48 Four-Wheel Drive
  • 49 Blank
  • 50 TBC IG
  • 51 Brakes
  • 52 TBC RUN

J-Case Fuses Usage

  • 32 Trailer
  • 33 Anti-Lock Brakes (ABS)
  • 34 Ignition A
  • 35 Blower Motor
  • 36 Ignition B
  • 37 Blank
  • 38 Rear Window Washer
  • 39 Fog Lamps
  • 40 Horn
  • 41 Fuel Pump
  • 42 Windshield Wipers/Washer
  • 43 High-Beam Headlamp
  • 44 Air Conditioning

Solid State Relays

  • 45 Cooling Fan
  • 46 HDM

Mini Relay Usage

  • 47 Starter
  • Miscellaneous Usage
  • 48 Instrument Panel Battery
  • 49 Fuse Puller

Comments

Visitor

You are the "man" thanks for this information

Visitor

Whats the key name for my car radio fuse on a 2002 chevy trailblazer

Visitor

Check fuse 41 in the rear fuse box.

Visitor

Front heater control cluster stopped working, ideas?

Visitor

trying to find the replacement interior fuse for #8 seats

Visitor

Okay...rained hard in my driver window last night...this morning, none of the controls work on driver door, including mirror. Passenger works. I pulled the 25 relay under the seat and swapped it, still nothing...is there another fuse I'm missing somewhere?

Visitor

When I turn my left signal on the hazards go on and the right signal works when it wants to. What fuses should I look at?

Visitor

we replaced the DDM and the power windows still don't work. This has been an issue since we replaced the battery.

Visitor

Same thing happened to mine Eric. The rained slips thru the creases in between buttons on your master control window switch. Your going to have to replace eventually, but in the meantime you can switch your passenger side window control lock to your driver side. Found this video on youtube. Good Luck. https://www.youtube.com/watch?v=RBNCyioHsR8

Visitor

Bad flasher bleeding over

Visitor

There's no light to see how fast I'm going? Is that a blown fuse??

Visitor

Here's a good one for you. We went to the dealer for an oil change today, started the car and turned the A/C on....worked for 5 seconds then stopped. I've checked Engine fuses: #35 along with J-case #44 and both seem fine. I've checked Interior fuses: #36, #39, & #44 along with J-Case: #35 & #44, all of these seem fine. When I turn the dial to anywhere from off to 5 and I can feel the A/C start but nothing coming out of the dash.

Visitor

which fuse is for the backlight of the license plate for a 2005 trailblazer
Had the same problem, problem was with the wiring harness to the blower motor. The plug connection had melted and destroyed the contacts. solution was to replace the wiring harness and plug. very common problem in trailblazer. https://www.youtube.com/watch?v=M4pka5BMoQE

Visitor

Fuse # for running lights?

Visitor

I think I need to replace the fuse for the power seat in my 2008 Chevy Trailblazer. Can someone please tell me what kind of fuse it is I need? It's not one of the mini fuses from what I've been told and that's all that comes up for part replacements. I was told it's one of the bigger silver fuses.

Visitor

All my dash lights are out in the instrument cluster.

Visitor

I have a 2003 GMC envoy an none of my gauges work on my Dash it's saying that it's an unknown driver none of my windows or my locks my Clicker when I take out one of the fuses everything works but I can't start my car and as soon as I put it back in it stops working

Visitor

my headlight do not work, I have changed them twice. any advise on what I need to do to get them to work 2007 chevy trailblazer ls

Visitor

my headlight do not work, I have changed them twice. any advise on what I need to do to get them to work 2007 chevy trailblazer ls

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