Looking for GMC Envoy fuse box diagrams without the hassle? This article covers the second-generation GMC Envoy, produced from 2002 to 2009 , and includes detailed diagrams for GMC Envoy 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 , along with clear information on fuse panel locations and a complete breakdown of fuse and relay assignments (fuse layout) to make electrical troubleshooting straightforward and efficient.
It is located under the rear seat on the driver’s side of the vehicle (tilt the seat up, remove the fuse box cover).
It is located under the hood in the engine compartment on the driver’s side of the vehicle.
Remove the primary cover by pressing the two locking tabs. Remove the secondary cover by snapping off while lifting.
Assignment of the fuses in the engine compartment (2002)
Fuse Data
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No. Type Description 1 Mini Fuse ECAS 2 Mini Fuse Passenger’s Side High-Beam Headlamp 3 Mini Fuse Passenger’s Side Low-Beam Headlamp 4 Mini Fuse Back-Up Trailer Lamps 5 Mini Fuse Driver’s Side High-Beam Headlamp 6 Mini Fuse Driver’s Side Low-Beam Headlamp 7 Mini Fuse WASH 8 Mini Fuse ATC 9 Mini Fuse Windshield Wipers 10 Mini Fuse Powertrain Control Module B 11 Mini Fuse Fog Lamps 12 Mini Fuse ST/LP 13 Mini Fuse Cigarette Lighter 14 Mini Fuse COILS 15 Mini Fuse RIDE 16 Mini Fuse TBD — Ignition 1 17 Mini Fuse Crank 18 Mini Fuse Air Bag 19 Mini Fuse ELEK Brake 20 Mini Fuse Cooling Fan 21 Mini Fuse Horn 22 Mini Fuse Ignition E 23 Mini Fuse ETC 24 Mini Fuse Instrument Panel Cluster, Driver Information Center 25 Mini Fuse Automatic Shift Lock Control System 26 Mini Fuse ENG 1 27 Mini Fuse Back-Up 28 Mini Fuse Powertrain Control Module 1 29 Mini Fuse Oxygen Sensor 30 Mini Fuse Air Conditioning 31 Mini Fuse TBC 49 Mini Fuse Fuse Puller 50 Mini Fuse Passenger’s Side Trailer TRN 51 Mini Fuse Driver’s Side Trailer TRN 52 Mini Fuse Hazard Flashers 32 J-Case Fuse Trailer 33 J-Case Fuse Anti-Lock Brakes (ABS) 34 J-Case Fuse Ignition A 35 J-Case Fuse Blower Motor 36 J-Case Fuse Ignition B
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Assignment of the relays in the engine compartment (2002)
Fuse Data
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No. Type Description 37 Micro Relay Headlamp Washer 38 Micro Relay Rear Window Washer 39 Micro Relay Fog Lamps 40 Micro Relay Horn 41 Micro Relay Fuel Pump 42 Micro Relay Windshield Wipers/Washer 43 Micro Relay High-Beam Headlamp 44 Solid State Relay Solid State 45 Solid State Relay Cooling Fan 46 Solid State Relay HDM 47 Mini Relay Starter
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Assignment of the harness connectors in the engine compartment (2002)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block (2002)
Fuse Data
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No. Description 1 Right Door Control Module 2 Left Door Control Module 3 LGM 2 4 TBC 3 5 Rear Fog Lamps 6 LGM/DSM 7 TBC 2 8 Power Seats 9 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 LOCK 19 Blank 20 Sunroof 21 LOCKS 23 Blank 24 UNLOCK 25 Blank 26 Blank 27 OH Battery/OnStar System 29 Rainsense Wipers 30 Parking Lamps 31 TBC 4CC 32 TBC 5 33 Front Wipers 34 VEH STOP 35 Blank 36 HVAC B 37 Front Parking Lamps 38 Left Turn Signal 39 HVAC1 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
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Assignment of the fuses in the engine compartment, L6 Engine (2003, 2004)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Wash 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 Stop Lamp 13 Cigarette Lighter 14 Ignition Coils 15 Air Suspension Ride 16 TBD-Ignition 1 17 Crank 18 Air Bag 19 Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Back-Up 28 Powertrain Control Module 1 29 Oxygen Sensor 30 Air Conditioning 31 Truck Body Controller 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 49 Blank 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers
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Assignment of the relays in the engine compartment, L6 Engine (2003, 2004)
Fuse Data
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No. Description 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 45 Cooling Fan 46 Headlamp Driver Module 47 Starter
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Assignment of the harness connectors in the engine compartment, L6 Engine (2003, 2004)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Assignment of the fuses in the engine compartment, V8 Engine (2003, 2004)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Wash 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 Stop Lamp 13 Cigarette Lighter 14 Ignition Coils 15 Cannister Vent 16 TBD-Ignition 1 17 Crank 18 Air Bag 19 Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Back-Up 28 Powertrain Control Module 1 30 Air Conditioning 31 Truck Body Controller 1 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers 53 Oxygen Sensor Bank A 54 Oxygen Sensor Bank B 55 Injector Bank A 56 Injector Bank B
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Assignment of the relays in the engine compartment, V8 Engine (2003, 2004)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Fog Lamps 40 Horn 41 Fuel Pump 42 Windshield Wipers/Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 58 Ignition 1
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Assignment of the harness connectors in the engine compartment, V8 Engine (2003, 2004)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy (2003, 2004)
Fuse Data
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No. Description 1 Right Door Control Module 2 Left Door Control Module 3 Liftgate Module 2 4 Truck Body Controller 3 5 Rear Fog Lamps 6 Liftgate Module/Driver Seat Module 7 Truck Body Controller 2 8 Power Seats 9 Blank 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear Parking Lamps 15 Auxiliary Power 2 16 Vehicle Center High-Mounted Stop Lamp 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 Truck Body Controller 4 Cruise Control 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Blank 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Right Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy XL (2003, 2004)
Fuse Data
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No. Description 1 Right Door Control Module 2 Left Door Control Module 3 Liftgate Module 2 4 Truck Body Controller 3 5 Rear Fog Lamps 6 Liftgate Module/Driver Seat Module 7 Truck Body Controller 2 8 Power Seats 9 Blank 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear Parting Lamps 15 Auxiliary Power 2 16 Vehicle Center High-Mounted Stop Lamp 17 Right Rear Parking Lamps 18 Locks 19 Blank 20 Sunroof 21 Lock 22 Retained Accessory Power 23 Blank 24 Unlock 25 Blank 26 Blank 27 OH Battery/OnStar System 28 Sunroof 29 Rainsense Wipers 30 Parking Lamps 31 Truck Body Controller 4 Cruise Control 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Blank 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Right Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Assignment of the fuses in the engine compartment, L6 Engine (2005)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Rear Window Washer, Headlamp Washer 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 StopLamp 13 Cigarette Lighter 14 Ignition Coils 15 Electric Adjustable Pedals 16 Truck Body Controller, Ignition 1 17 Crank 18 AirBag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Backup 28 Powertrain Control Module 1 29 Oxygen Sensor 30 Air Conditioning 31 Truck Body Controller 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers 53 Headlamp Driver Module 54 Air Injection Reactor (AIR) Solenoid 56 Air Injection Reactor (AIR) Pump
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Assignment of the relays in the engine compartment, L6 Engine (2005)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Foglamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 55 Air Injection Reactor (AIR) Solenoid
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Assignment of the harness connectors in the engine compartment, L6 Engine (2005)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Assignment of the fuses in the engine compartment, V8 Engine (2005)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Rear Window Washer, Headlamp Washer 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 Stop Lamp 13 Cigarette Lighter 14 Ignition Coils 15 Cannister Vent 16 Truck Body Controller, Ignition 1 17 Crank 18 Air Bag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Back-Up 28 Powertrain Control Module 1 29 Powertrain Control Module 30 Air Conditioning 31 Injector Bank A 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers 53 Transmission 54 Oxygen Sensor Bank B 55 Oxygen Sensor Bank A 56 Injector Bank B 57 Headlamp Driver Module 58 Truck Body Controller 1 59 Electric Adjustable Pedal
Assignment of the relays in the engine compartment, V8 Engine (2005)
No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Fog Lamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 60 Powertrain
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Assignment of the harness connectors in the engine compartment, V8 Engine (2005)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy (2005)
Fuse Data
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No. Description 01 Right Door Control Module 02 Left Door Control Module 03 Liftgate Module 2 04 Truck Body Controller 3 05 Rear Fog Lamps 06 Blank 07 Truck Body Controller 2 08 Power Seats 09 Rear Wiper 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear Parking Lamps 15 Blank 16 Vehicle Center High-Mounted Stop Lamp 17 Right Rear Parking Lamps 18 Locks 19 Liftgate Module/Driver Seat Module 20 Blank 21 Lock 23 Blank 24 Unlock 25 Blank 26 Blank 27 OH Battery/OnStar System 28 Sunroof 29 Rain sense Wipers 30 Parking Lamps 31 Truck Body Controller 4 Cruise Control 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Transmission Control Module 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Right Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy XL (2005)
Fuse Data
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No. Description 01 Right Door Control Module 02 Left Door Control Module 03 Liftgate Module 2 04 Truck Body Controller 3 05 Rear Fog Lamps 06 Blank 07 Truck Body Controller 2 08 Power Seats 09 Rear wiper 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear ParKing Lamps 15 Blank 16 Vehicle Center High-Mounted Stop Lamp 17 Right Rear Parking Lamps 18 Locks 19 Liftgate Module/Driver Seat Module 20 Vent Window 21 Lock 22 Retained Accessory Power 23 Blank 24 Unlock 25 Blank 26 Blank 27 OH Battery/OnStar System 28 Sunroof 29 Rainsense Wipers 30 Parking Lamps 31 Truck Body Controller Cruise Control 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Transmission Control Module 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Assignment of the fuses in the engine compartment, L6 Engine (2006)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Rear Window Washer, Headlamp Washer 8 Active Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 StopLamp 13 Cigarette Lighter 14 Not Used 15 Electric Adjustable Pedals 16 Truck Body Controller, Ignition 1 17 Crank 18 AirBag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Backup 28 Powertrain Control Module 1 29 Oxygen Sensor 30 Air Conditioning 31 Truck Body Controller 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passengers Side Trailer Turn 51 Drivers Side Trailer Turn 52 Hazard Flashers 53 Headlamp Driver Module 54 Air Injection Reactor (AIR) Solenoid 56 Air Injection Reactor (AIR) Pump 58 Vehicle Stability Enhancement System (StabiliTrak)
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Assignment of the relays in the engine compartment, L6 Engine (2006)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Fog lamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 55 Air Injection Reactor (AIR) Solenoid 57 Powertrain
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Assignment of the harness connectors in the engine compartment, L6 Engine (2006)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Assignment of the fuses in the engine compartment, V8 Engine (2006)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Rear Window Washer, Headlamp Washer 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 Stop Lamp 13 Cigarette Lighter 14 Ignition Coils 15 Canister Vent 16 Truck Body Controller, Ignition 1 17 Crank 18 AirBag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Backup 28 Powertrain Control Module 1 29 Powertrain Control Module 30 Air Conditioning 31 Injector Bank A 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passengers Side Trailer Turn 51 Drivers Side Trailer Turn 52 Hazard Flashers 53 Transmission 54 Oxygen Sensor Bank B 55 Oxygen Sensor Bank A 56 Injector Bank B 57 Headlamp Driver Module 58 Truck Body Controller 1 59 Electric Adjustable Pedal
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Assignment of the relays in the engine compartment, V8 Engine (2006)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Fog Lamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 60 Powertrain 61 Vehicle Stability Enhancement System (StabiliTrak®)
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Assignment of the harness connectors in the engine compartment, V8 Engine (2006)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy (2006)
Fuse Data
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№ Usage 1 Right Door Control Module 2 Left Door Control Module 3 Liftgate Module 2 4 Truck Body Controller 3 5 Rear Fog Lamps 6 Blank 7 Truck Body Controller 2 8 Power Seats 9 Rear Wiper 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear Parking Lamps 15 Blank 16 Vehicle Center High-Mounted Stop Lamp 17 Right Rear Parking Lamps 18 Locks 19 Liftgate Module/Driver Seat Module 20 Blank 21 Lock 23 Blank 24 Unlock 25 Blank 26 Blank 27 OH Battery/OnStar System 28 Sunroof 29 Rainsense Wipers 30 Parking Lamps 31 Truck Body Controller Cruise Control 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Transmission Control Module 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Right Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block, Envoy XL (2006)
Fuse Data
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No. Description 1 Right Door Control Module 2 Left Door Control Module 3 Liftgate Module 2 4 Truck Body Controller 3 5 Rear Fog Lamps 6 Blank 7 Truck Body Controller 2 8 Power Seats 9 Rear wiper 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Left Rear Parking Lamps 15 Blank 16 Vehicle Center High-Mounted Stop Lamp 17 Right Rear Parking Lamps 18 Locks 19 Liftgate Module/Driver Seat Module 20 Vent Window 21 Lock 22 Retained Accessory Power 23 Blank 24 Unlock 25 Blank 26 Blank 27 OH Battery/OnStar System 28 Sunroof 29 Rainsense Wipers 30 Parking Lamps 31 Truck Body Controller Accessory 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Transmission Control Module 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Left Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Right Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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Assignment of the fuses in the engine compartment, L6 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Windshield Wiper 8 Active Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 StopLamp 13 Cigarette Lighter 15 Electric Adjustable Pedals 16 Truck Body Controller, Ignition 1 17 Crank 18 AirBag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Transmission Control Module Canister 27 Backup 28 Powertrain Control Module 1 29 Oxygen Sensor 30 Air Conditioning 31 Truck Body Controller 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Blower 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers 53 Headlamp Driver Module 54 Air Injection Reactor (AIR) Solenoid 56 Air Injection Reactor (AIR) Pump 58 Vehicle Stability Enhancement System (StabiliTrak®) 59 Regulated Voltage Control
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Assignment of the relays in the engine compartment, L6 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Washer 39 Fog lamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 55 Air Injection Reactor (AIR) Solenoid 57 Powertrain
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Assignment of the harness connectors in the engine compartment, L6 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Assignment of the fuses in the engine compartment, V8 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 1 Electrically-Controlled Air Suspension 2 Passenger’s Side High-Beam Headlamp 3 Passenger’s Side Low-Beam Headlamp 4 Back-Up-Trailer Lamps 5 Driver’s Side High-Beam Headlamp 6 Driver’s Side Low-Beam Headlamp 7 Windshield Wiper 8 Automatic Transfer Case 9 Windshield Wipers 10 Powertrain Control Module B 11 Fog Lamps 12 Stoplamp 13 Cigarette Lighter 14 Ignition Coils 15 Transmission Control Module (TCM) Canister Vent 16 Truck Body Controller, Ignition 1 17 Crank 18 Airhag 19 Trailer Electric Brake 20 Cooling Fan 21 Horn 22 Ignition E 23 Electronic Throttle Control 24 Instrument Panel Cluster, Driver Information Center 25 Automatic Shift Lock Control System 26 Engine 1 27 Backup 28 Powertrain Control Module 1 29 Powertrain Control Module 30 Air Conditioning 31 Injector Bank A 32 Trailer 33 Anti-Lock Brakes (ABS) 34 Ignition A 35 Blower Motor 36 Ignition B 50 Passenger’s Side Trailer Turn 51 Driver’s Side Trailer Turn 52 Hazard Flashers 53 Transmission 54 Oxygen Sensor Bank B 55 Oxygen Sensor Bank A 56 Injector Bank B 57 Headlamp Driver Module 58 Truck Body Controller 1 59 Electric Adjustable Pedal 61 Vehicle Stability Enhancement System (StabiliTrak®) 62 Regulated Voltage Control
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Assignment of the relays in the engine compartment, V8 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 37 Headlamp Washer 38 Rear Window Wiper/Washer 39 Fog Lamps 40 Horn 41 Fuel Pump 42 Windshield Washer 43 High-Beam Headlamp 44 Air Conditioning 45 Cooling Fan 46 Headlamp Driver Module 47 Starter 49 Electric Adjustable Pedal 60 Powertrain
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Assignment of the harness connectors in the engine compartment, V8 Engine (2007, 2008, 2009)
Fuse Data
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No. Description 48 Instrument Panel Battery
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Fuse Data
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Assignment of the fuses and relays in the Rear Underseat Fuse Block (2007, 2008, 2009)
Fuse Data
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No. Description 1 Right Door Control Module 2 Left Door Control Module 3 Liftgate Module 2 4 Truck Body Controller 3 5 Rear Fog Lamps 6 Blank 7 Truck Body Controller 2 8 Power Seats 9 Rear Wiper 10 Driver Door Module 11 Amplifier 12 Passenger Door Module 13 Rear Climate Controls 14 Driver Side Rear Parking Lamps 15 Blank 16 Vehicle Center High-Mounted Stoplamp (CHMSL) 17 Passenger Side Rear Parking Lamps 18 Locks 19 Liftgate Module/Driver Seat Module 20 Blank 21 Lock 23 Blank 24 Unlock 25 Blank 26 Blank 27 OnStar Overhead Battery/OnStar System 28 Sunroof 29 Not Used 30 Parking Lamps 31 Truck Body Controller Accessory 32 Truck Body Controller 5 33 Front Wipers 34 Vehicle Stop 35 Transmission Control Module 36 Heat Ventilation Air Conditioning B 37 Front Parking Lamps 38 Driver Side Turn Signal 39 Heat Ventilation Air Conditioning 1 40 Truck Body Controller 4 41 Radio 42 Trailer Park 43 Passenger Side Turn Signal 44 Heat Ventilation Air Conditioning 45 Rear Fog Lamps 46 Auxiliary Power 1 47 Ignition 0 48 Four-Wheel Drive 49 Blank 50 Truck Body Controller Ignition 51 Brakes 52 Truck Body Controller Run
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