2003 GMC ENVOY Owner's Manual

Fuses Usage
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 BatteryRear Underseat Fuse Block
L6 Engine
5-97

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 Ampli®er
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Auxiliary Power 2
16Vehicle Center High-Mounted Stop
Lamp
17 Right Rear Parking Lamps
18 Locks
19 Blank
20 Sunroof
21 Lock
Envoy
5-98

Fuses Usage
23 Blank
24 Unlock
25 Blank
26 Blank
27 OH Battery/OnStar
žSystem
29 RainsenseŸ Wipers
30 Parking Lamps
31Truck 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
Fuses Usage
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
5-99

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 Rear Wiper
10 Driver Door Module
11 Ampli®er
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Auxiliary Power 2
16Vehicle Center High-Mounted Stop
Lamp
17 Right Rear Parking Lamps
18 Locks
19 Blank
20 Vent Window
21 Lock
Envoy XL
5-100

Fuses Usage
22 Retained Accessory Power
23 Blank
24 Unlock
25 Blank
26 Blank
27 OH Battery/OnStar
žSystem
28 Sunroof
29 RainsenseŸ Wipers
30 Parking Lamps
31Truck 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
Fuses Usage
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
5-101

Capacities and Speci®cations
Capacities and Speci®cations
Engine VIN Code Transmission Spark Plug Gap Firing Order
ªVORTECŸ º 4200 L6 S M300.042 inches
(1.07 mm)1±5-3±6±2±4
ªVORTECŸ º 5300 V8 P M300.060 inches
(1.52 mm)1±8±7±2±6±5±4±3
ApplicationL6 Engine V8 Engine
English Metric English Metric
Wheel Nut Torque 100 lb ft 140Y100 lb ft 140Y
Cooling System
Envoy 13.9 quarts 13.1 L Ð Ð
Envoy XL 15.2 quarts 14.4 L 17.9 quarts 17.0 L
Air Conditioning Refrigerant R/134a
Envoy 1.9 lbs. 0.9 kg Ð Ð
Envoy XL 2.8 lbs. 1.27 kg 2.8 lbs. 1.27 kg
Engine Oil with Filter 7.0 quarts 6.6 L 6.0 quarts 5.7 L
5-102

ApplicationL6 Engine V8 Engine
English Metric English Metric
Transmission
(Drain and Re®ll)5.0 quarts 4.7 L 5.0 quarts 4.7 L
Differential Fluid
Rear 4.0 pints 1.9 L 4.0 pints 1.9 L
Front 2.6 pints 0.8 L 2.6 pints 0.8 L
Fuel Tank
Envoy 18.7 gallons 70.8 L Ð Ð
Envoy with RPO NNK 22.0 gallons 83.3 L Ð Ð
Envoy XL 25.3 gallons 95.8 L 25.3 gallons 95.8 L
All capacities are approximate. When adding, be sure to ®ll to the appropriate level, as recommended in this
manual. Recheck the ¯uid level after ®lling.
5-103

Normal Maintenance Replacement Parts
Part Number
Engine Oil Filter
L6PF61*
V8PF44*
Engine Air CleanerA2014C*
Automatic Transmission Filter Kit GM Part No. 24200796
Spark Plugs
L641-981*
V841±974*
Fuel FilterGF831*
Windshield Wiper Blade 20.0 inches (50.8 cm)
Backglass Wiper Blade 14.0 inches (35.6 cm)
*ACDelco
žpart number
5-104