GMC Envoy (2003 – 2004) – fuse box diagram

Year of production: 2003, 2004

Engine Compartment Fuse Block

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

L6 Engine

Fuses	Usage
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
50	Passenger’s Side Trailer Turn
51	Driver’s Side Trailer Turn
52	Hazard Flashers

 

Relays	Usage
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

 

Miscellaneous	Usage
48	Instrument Panel Battery
49	Blank

V8 Engine

Fuses	Usage
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

 

Relays	Usage
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

 

Miscellaneous	Usage
48	Instrument Panel Battery

 

Rear Underseat Fuse Block

Envoy

Fuses	Usage
01	Right Door Control Module
02	Left Door Control Module
03	Liftgate Module 2
04	Truck Body Controller 3
05	Rear Fog Lamps
06	Liftgate Module/Driver Seat Module
07	Truck Body Controller 2
08	Power Seats
09	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

 

Envoy XL

Fuses	Usage
01	Right Door Control Module
02	Left Door Control Module
03	Liftgate Module 2
04	Truck Body Controller 3
05	Rear Fog Lamps
06	Liftgate Module/Driver Seat Module
07	Truck Body Controller 2
08	Power Seats
09	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
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

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

GMC Envoy (2002) – fuse box diagram

Year of production: 2002

Engine Compartment Fuse Block

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

Mini Fuses	Usage
1	ECAS
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	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’s Side Trailer TRN
51	Driver’s Side Trailer TRN
52	Hazard Flashers

 

Case Fuses	Usage
32	Trailer
33	Anti-Lock Brakes (ABS)
34	Ignition A
35	Blower Motor
36	Ignition B

 

Micro Relays	Usage
37	Headlamp Washer
38	Rear Window Washer
39	Fog Lamps
40	Horn
41	Fuel Pump
42	Windshield Wipers/Washer
43	High-Beam Headlamp
44	Solid State

 

Solid State Relays	Usage
45	Cooling Fan
46	HDM

 

Mini Relays	Usage
47	Starter

 

Miscellaneous	Usage
48	Instrument Panel Battery
49	Fuse Puller

 

Rear Underseat Fuse Block

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

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	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	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

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

GMC Envoy (2001) – fuse box diagram

Year of production: 2001

Instrument Panel Fuse Block

The instrument panel fuse block is at the driver’s end of the instrument panel.

Fuse/Circuit Breaker	Usage
A	Not Used
B	Not Used
1	Not Used
2	Cigarette Lighter, Data Link Connector
3	Cruise Control Module and Switch, Body Control Module, Heated Seats
4	Gages, Body Control Module, Instrument Panel Cluster
5	Parking Lamps, Power Window Switch, Body Control Module, Ashtray Lamp
6	Steering Wheel Audio Control Illumination
7	Headlamp Switch, Body Control Module, Headlamp Relay
8	Courtesy Lamps, Battery Run-Down Protection
9	HVAC Control Head (Manual)
10	Turn Signal
11	Cluster, Engine Control Module
12	Interior Lights
13	Auxiliary Power
14	Power Locks Motor
15	4WD Switch, Engine Controls (VCM, PCM, Transmission)
16	Supplemental Inflatable Restraint
17	Front Wiper
18	Steering Wheel Audio Controls
19	Radio, Battery
20	Amplifier
21	HVAC (Manual), HVAC I (Automatic), HVAC Sensors (Automatic)
22	Anti-Lock Brakes
23	Rear Wiper
24	Radio, Ignition

Engine Compartment Fuse Block

The fuse block is under the hood at the driver’s side of the engine compartment.

Name	Usage
TRL TRN	Trailer Left Turn
TRR TRN	Trailer Right Turn
TRL B/U	Trailer Back-Up Lamps
VEH B/U	Vehicle Back-Up Lamps
RT TURN	Right Turn Signal Front
HDLP W/W	Not Used
LT TRN	Left Turn Signal Rear
RT TRN	Right Turn Signal Rear
RR PRK	Right Rear Parking Lamps
TRL PRK	Trailer Park Lamps
LTHDLP	Left Headlamp
RTHDLP	Right Headlamp
FRPRK	Front Parking Lamps
INT BAT	I/P Fuse Block Feed
ENG I	Engine Sensors/Solenoids, MAF, CAM, PURGE, VENT
ECM B	Engine Control Module, Fuel Pump, Module, Oil Pressure
ABS	Anti-Lock Brake System
ECM I	Engine Control Module Injectors
A/C	Air Conditioning
W/W PMP	Not Used
HORN	Horn
BTSI	Automatic Transmission Shift Lock Control System
B/U LP	Back-Up Lamps
IGN B	Column Feed, IGN 2, 3, 4
RAP	Retained Accessory Power
LD LEV	Not Used
OXYSEN	Oxygen Sensor
IGN E	Engine
MIR/LKS	Mirrors, Door Locks
FOG LP	Fog Lamps
IGN A	Starting and Charging, IGN 1
STUD #2	Accessory Feeds, Electric Brake
PARKLP	Parking Lamps
LR PRK	Left Rear Parking Lamps
IGN C	Starter Solenoid, Fuel Pump, PRNDL
HTDSEAT	Heated Seats
HVAC	HVAC System
TRCHMSL	Trailer Center High-Mounted Stop Light
RRDFOG	Rear Defogger
TBC	Truck Body Computer
CRANK	Clutch Switch, NSBU Switch
HAZLP	Hazard Lamps
VECHMSL	Vehicle Center High-Mounted Stop Lamp
HTDMIR	Heated Mirror
ATC	Transfer Case (Four-Wheel Drive)
STOPLP	Stoplamps
RR W/W	Rear Window Wiper

 

Engine Compartment Fuse Block (Vehicles with HID Headlamps)

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

Name	Usage
TRL TRN	Trailer Left Turn
TRR TRN	Trailer Right Turn
TRL B/U	Trailer Back-Up Lamps
VEH B/U	Vehicle Back-Up Lamps
RT TURN	Right Turn Signal Front
LT TURN	Left Turn Signal Front
LT TRN	Left Turn Signal Rear
RT TRN	Right Turn Signal Rear
RR PRK	Right Rear Parking Lamps
TRL PRK	Trailer Park Lamps
LT LOW	Low-Beam Headlamp, Left
RT LOW	Low-Beam Headlamp, Right
FRPRK	Front Parking Lamps
INT BAT	I/P Fuse Block Feed
ENG I	Engine Sensors/Solenoids, MAF, CAM, PURGE, VENT
ECM B	Engine Control Module, Fuel Pump, Module, Oil Pressure
ABS	Anti-Lock Brake System
ECM I	Engine Control Module Injectors
A/C	Air Conditioning
LT HI	High-Beam Headlamp, Left
RT HI	High-Beam Headlamp, Right
HORN	Horn
BTSI	Automatic Transmission Shift Lock Control System
B/U LP	Back-Up Lamps
DRL	Daytime Running Lamps
IGN B	Column Feed, IGN 2, 3, 4
RAP	Retained Accessory Power
LDLEV	Electronic Load Leveling
OXYSEN	Oxygen Sensor
IGN E	Engine
MIR/LKS	Mirrors, Door Locks
FOG LP	Fog Lamps
IGN A	Starting and Charging, IGN 1
STUD #2	Accessory Feeds, Electric Brake
PARKLP	Parking Lamps
LR PRK	Left Rear Parking Lamps
IGN C	Starter Solenoid, Fuel Pump, PRNDL
HTDSEAT	Heated Seats
HVAC	HVAC System
TRCHMSL	Trailer Center High-Mounted Stop Lamp
HI BEAM	High-Beam Headlamps
RRDFOG	Rear Defogger
TBC	Truck Body Computer
CRANK	Clutch Switch, NSBU Switch
HAZLP	Hazard Lamps
VECHMSL	Vehicle Center High-Mounted Stoplamp
HTDMIR	Heated Mirror
ATC	Automatic Transfer Case
STOPLP	Stoplamps
RR W/W	Rear Window Wiper

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

GMC Envoy (1998 – 2000) – fuse box diagram

Year of production: 1998, 1999, 2000

Instrument Panel Fuse Block

The instrument panel fuse block is at the driver’s end of the instrument panel.

Fuse/Circuit Breaker	Usage
A	Not Used
B	Not Used
1	Not Used
2	Cigarette Lighter, Data Link Connector
3	Cruise Control Module and Switch, Body Control Module, Heated Seats
4	Gages, Body Control Module, Instrument Panel Cluster
5	Parking Lamps, Power Window Switch, Body Control Module, Ashtray Lamp
6	Steering Wheel Audio Control Illumination
7	Headlamp Switch, Body Control Module, Headlamp Relay
8	Courtesy Lamps, Battery Run-Down Protection
9	Not Used
10	Turn Signal
11	Cluster, Engine Control Module
12	Interior Lights
13	Auxiliary Power
14	Power Locks Motor
15	4WD Switch, Engine Controls (VCM, PCM, Transmission)
16	Air Bag
17	Front Wiper
18	Steering Wheel Audio Controls
19	Radio, Battery
20	Amplifier
21	HVAC I (Automatic), HVAC Sensors (Automatic)
22	Anti-Lock Brakes
23	Rear Wiper
24	Radio, Ignition

Engine Compartment Fuse Block

The fuse block is under the hood at the driver’s side of the engine compartment.

Name	Usage
TRL TRN	Trailer Left Turn
TRR TRN	Trailer Right Turn
TRL B/U	Trailer Back-Up Lamps
VEH B/U	Vehicle Back-Up Lamps
RT TURN	Right Turn Signal Front
LT TURN	Left Turn Signal Front
LT TRN	Left Turn Signal Rear
RT TRN	Right Turn Signal Rear
RR PRK	Right Rear Parking Lamps
TRL PRK	Trailer Park Lamps
LT LOW	Low-Beam Headlamp, Left
RT LOW	Low-Beam Headlamp, Right
FRPRK	Front Parking Lamps
INT BAT	I/P Fuse Block Feed
ENG I	Engine Sensors/Solenoids, MAF, CAM, PURGE, VENT
ECM B	Engine Control Module, Fuel Pump, Module, Oil Pressure
ABS	Anti-Lock Brake System
ECM I	Engine Control Module Injectors
A/C	Air Conditioning
LT HI	High-Beam Headlamp, Left
RT HI	High-Beam Headlamp, Right
HORN	Horn
BTSI	Brake-Transmission Shift Interlock
B/U LP	Back-Up Lamps
DRL	Daytime Running Lamps (If Equipped)
IGN B	Column Feed, IGN 2, 3, 4
RAP	Retained Accessory Power
LD LEV	Electronic Load Leveling
OXYSEN	Oxygen Sensor
MIR/LKS	Mirrors, Door Locks
FOG LP	Fog Lamps
IGN E	Engine
IGN A	Starting and Charging, IGN 1
STUD #2	Accessory Feeds, Electric Brake
PARKLP	Parking Lamps
LR PRK	Left Rear Parking Lamps
IGN C	Starter Solenoid, Fuel Pump, PRNDL
HTDSEAT	Heated Seats
HVAC	HVAC System
TRCHMSL	Trailer Center High-Mounted Stop Light
HIBEAM	High-Beam Headlamps
RRDFOG	Rear Defogger
TBC	Truck Body Computer
CRANK	Clutch Switch, NSBU Switch
HAZLP	Hazard Lamps
VECHMSL	Vehicle Center High-Mounted Stop Lamp
HTDMIR	Heated Mirror
ATC	Automatic Transfer Case
STOPLP	Stoplamps
RR W/W	Rear Window Wiper

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.