GMC Envoy 2008 - 2008 GENERAL MOTORS Envoy & TrailBlazer

GMC Envoy 2008 - BUZZERS, RELAYS & TIMERS

GMC Envoy 2008 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Relay (4.2L)	On underhood fuse block. See Fig. 98.
A/C Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
AIR SOL Relay	In underhood fuse block. See Fig. 98.
EAP Relay (4.2L)	In underhood fuse block. See Fig. 98.
EAP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
Electronic Adjustable Pedals (EAP) Relay (1)	Left side of dash, on pedal assembly. See Fig. 14.
FAN Relay (4.2L)	In underhood fuse block. See Fig. 98.
FAN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
FOG LAMP Relay (4.2L)	On underhood fuse block. See Fig. 98.
FOG LAMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
FUEL PUMP Relay (4.2L)	On underhood fuse block. See Fig. 98.
FUEL PUMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
HDM Relay (4.2L)	In underhood fuse block. See Fig. 98.
HDM Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
HEADLAMP WPR Relay (4.2L)	In underhood fuse block. See Fig. 98.
HEADLAMP WPR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
HI HEADLAMP Relay (4.2L)	In underhood fuse block. See Fig. 98.
HI HEADLAMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
HORN Relay (4.2L)	On underhood fuse block. See Fig. 98.
HORN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
LOCK Relay	In rear fuse block. See Fig. 112.
PARK LP Relay	In rear fuse block. See Fig. 112.
PWR/TRN Relay (4.2L)	In underhood fuse block. See Fig. 98.
PWR/TRN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
REAR/WPR Relay (4.2L)	On underhood fuse block. See Fig. 98.
REAR/WPR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
RR FOG LP Relay	In rear fuse block. See Fig. 112.
Secondary Air Injection (AIR) Pump Relay (24)	Left front of chassis. See Fig. 34.
STRTR Relay (4.2L)	On underhood fuse block. See Fig. 98.
STRTR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.
UNLOCK Relay	On rear fuse block. See Fig. 112.
WSW Relay (4.2L)	On underhood fuse block. See Fig. 98.
WSW Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 111.

GMC Envoy 2008 - CIRCUIT PROTECTION DEVICES

GMC Envoy 2008 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Rear Fuse Block	Below left rear seat. See Fig. 86.
Underhood Fuse Block	Above left front wheelwell. See Fig. 1.

GMC Envoy 2008 - CONTROL UNITS

GMC Envoy 2008 CONTROL UNITS LOCATION

Component	Location
Blower Motor Control Module	Below right side of dash. See Fig. 49.
Body Control Module (BCM)	Beneath left rear seat, on rear fuse block. See Fig. 86.
Driver Door Module (DDM)	Below driver's door switch panel.
Electronic Brake Control Module (EBCM)	On inner left frame rail, beside transmission. See Fig. 116.
Engine Control Module (ECM)	Near lower left front of engine. See Fig. 63.
Front Passenger Door Module (FPDM)	Below front passenger door switch panel.
HVAC Control Module (Automatic A/C)	Center of dash. See Fig. 72.
HVAC Control Module-Auxiliary	Under lower console.
HVAC Control Module (Manual A/C)	Center of dash. See Fig. 4.
Inflatable Restraint Front Passenger Presence System (PPS) Module	Under passenger seat. See Fig. 75.
Inflatable Restraint I/P Module	Left side of dash. See Fig. 11.
Inflatable Restraint Roof Rail Module - Left	In roof above driver door.
Inflatable Restraint Roof Rail Module - Right	In roof, above front passenger's door.
Inflatable Restraint Sensing & Diagnostic Module (SDM)	Below rear of center console. See Fig. 13.
Inflatable Restraint Steering Wheel Module	In steering wheel. See Fig. 12.
Liftgate Module (LGM) (9)	In center of liftgate. See Fig. 17.
Memory Seat Module (Driver)	Below left front seat. See Fig. 84.
Powertrain Control Module (PCM)	On upper left side of engine. See Fig. 66.
Regulated Voltage Control Module	Behind battery. See Fig. 48.
Theft Deterrent Control Module	In steering column. See Fig. 90.
Transfer Case Shift Control Module	Behind lower left side of dash. See Fig. 91.
Transmission Control Module (TCM)	Left front of engine compartment. See Fig. 92.
Turn Signal/Hazard Flasher Module (1)	Behind lower left side of dash. See Fig. 56.
Vehicle Communication Interface Module (VCIM)	Under right rear seat. See Fig. 15.

GMC Envoy 2008 - MOTORS

GMC Envoy 2008 MOTORS LOCATION

Component	Location
Air Suspension Compressor Assembly	Behind right rear wheelwell. See Fig. 6.
Air Temperature Actuator (Left)	Below left center of dash. See Fig. 2.
Air Temperature Actuator (Right)	Behind right center of dash. See Fig. 2.
Automatic Transmission Shift Lock Actuator	In floor shifter. See Fig. 10.
Blower Motor	Below right side of dash. See Fig. 49.
Console Mode Actuator (Auxiliary)	Under lower console.
Cooling Fan (1)	Front of engine compartment. See Fig. 55.
Defrost Actuator	On upper dash carrier. See Fig. 2.
Door Latch Assembly (Driver)	In left front door. See Fig. 58.
Door Latch Assembly (Left Rear) (4)	In left rear door. See Fig. 60.
Door Latch Assembly (Passenger)	In right front door. See Fig. 59.
Door Latch Assembly (Right Rear) (3)	In right rear door. See Fig. 61.
Front Axle Actuator	On inner flange of right front axle. See Fig. 7.
Fuel Pump & Sender Assembly (9)	Top of fuel tank. See Fig. 34.
Headlamp Leveling Actuator (Left)	Behind left headlight. See Fig. 68.
Headlamp Leveling Actuator (Right)	Behind right headlight. See Fig. 69.
Headlamp Washer Fluid Pump	Right front of engine compartment. See Fig. 18.
Ignition Lock Cylinder Control Actuator (4)	In upper steering column. See Fig. 73.
Liftgate Latch Assembly (12)	In liftgate assembly. See Fig. 17.
Lumbar Horizontal Motor (Driver)	In driver seat back. See Fig. 82.
Lumbar Horizontal Motor (Passenger)	In passenger seat back. See Fig. 83.
Mode Actuator	Behind upper left center of dash. See Fig. 2.
Rear Blower Motor (1)	Under center of dash. See Fig. 29.
Rear Window Washer Fluid Pump	On washer fluid reservoir. See Fig. 18.
Rear Window Wiper Motor (13)	Inside tailgate. See Fig. 17.
Recirculation Actuator	On right side of dash. See Fig. 3.
Seat Front Vertical Motor (Driver)	Under driver seat. See Fig. 77.
Seat Front Vertical Motor (Passenger)	Under passenger seat. See Fig. 78.
Seat Horizontal Motor (Driver)	Under driver seat. See Fig. 77.
Seat Horizontal Motor (Passenger)	Under passenger seat. See Fig. 78.
Seat Rear Vertical Motor (Driver)	Under driver seat. See Fig. 77.
Seat Rear Vertical Motor (Passenger)	Under passenger seat. See Fig. 78.
Seat Recline Motor (Driver)	Under driver seat. See Fig. 77.
Seat Recline Motor (Passenger)	Under passenger seat. See Fig. 78.
Secondary Air Injection (AIR) Pump (5)	Left front of chassis, near electronic brake control module. See Fig. 34.
Starter (4.2L)	Left rear of engine. See Fig. 26.
Starter (5.3L/6.0L)	Right side of engine. See Fig. 23.
Sunroof Motor	Above headliner, at rear of sun roof assembly. See Fig. 88.
Transfer Case Encoder Motor	Part of transfer case.
Window Motor (Driver)	In left front door. See Fig. 58.
Window Motor (Front Passenger)	In right front door. See Fig. 59.
Window Motor (Left Rear) (2)	In left rear door. See Fig. 60.
Window Motor (Right Rear) (5)	In right rear door. See Fig. 61.
Windshield Washer Fluid Pump	On washer fluid reservoir. See Fig. 18.
Windshield Wiper Motor	On upper center of firewall. See Fig. 19.

GMC Envoy 2008 - SENDING UNITS & SENSORS

GMC Envoy 2008 SENDING UNITS & SENSORS LOCATION

Component	Location
A/C Refrigerant Pressure Sensor	On high pressure line, near A/C compressor. See Fig. 42.
Air Suspension Sensor-LR	On frame rail, near left rear suspension arm. See Fig. 6.
Air Suspension Sensor-RR	On frame rail, near right rear suspension arm. See Fig. 6.
Air Temperature Sensor (Inside)	In left "B" pillar. See Fig. 43.
Air Temperature Sensor (Lower Left)	Left of lower console, in air duct. See Fig. 46.
Air Temperature Sensor (Lower Right)	In right lower console, in air duct. See Fig. 44.
Air Temperature Sensor (Upper Left)	Left center of dash, in air duct. See Fig. 45.
Air Temperature Sensor (Upper Right)	Right center of dash, in air duct. See Fig. 45.
Ambient Air Temperature Sensor	On left center of radiator support. See Fig. 5.
Ambient Light Sensor	On top center of dash. See Fig. 47.
Ambient Light/Sun Load Sensor	On top center of dash, near base of windshield. See Fig. 47.
Brake Booster Vacuum Sensor	On power brake booster. See Fig. 24.
Camshaft Position (CMP) Sensor (4.2L)	On right front of engine block. See Fig. 51.
Camshaft Position (CMP) Sensor (5.3L/6.0L) (1)	At bottom front of engine. See Fig. 52.
Crankshaft Position (CKP) Sensor (4.2L)	On left rear of engine block, below starter. See Fig. 26.
Crankshaft Position (CKP) Sensor (5.3L/6.0L)	At right rear of engine, adjacent to starter. See Fig. 23.
Electronic Frontal Sensor (EFS) - Left	On left side of frame, at front of vehicle. See Fig. 62.
Electronic Frontal Sensor (EFS) - Right	On right side of frame, at front of vehicle. See Fig. 62.
Engine Coolant Temperature (ECT) Sensor (4.2L)	Lower right rear of engine block. See Fig. 65.
Engine Coolant Temperature (ECT) Sensor (5.3L/6.0L)	On left front of engine block, near generator. See Fig. 64.
Engine Oil Pressure (EOP) Sensor	At left rear of engine.
Fuel Tank Pressure (FTP) Sensor (18)	At top left rear of fuel tank. See Fig. 34.
Heated Oxygen Sensor Bank 1 Sensor 1 (5.3L/6.0L)	In left bank exhaust pipe, ahead of catalytic converter. See Fig. 70.
Heated Oxygen Sensor Bank 1 Sensor 2 (5.3L/6.0L)	In left bank of exhaust pipe, behind catalytic converter. See Fig. 70.
Heated Oxygen Sensor Bank 2 Sensor 1 (5.3L/6.0L)	In right bank OF exhaust pipe, ahead of catalytic converter. See Fig. 70.
Heated Oxygen Sensor Bank 2 Sensor 2 (5.3L/6.0L)	In right bank of exhaust pipe, behind catalytic converter. See Fig. 70.
Heated Oxygen Sensor (HO2S) 1 (4.2L)	On exhaust manifold, on right side of engine. See Fig. 51.
Heated Oxygen Sensor (HO2S) 2 (4.2L)	Downstream of catalytic converter, on exhaust pipe. See Fig. 28.
Inclination Sensor	Under right rear seat. See Fig. 74.
Inflatable Restraint Front Passenger Presence System (PPS) Sensor	Under passenger seat. See Fig. 75.
Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor	Integral to passenger seat bet retractor. See Fig. 76.
Inflatable Restraint Seat Position Sensor (SPS) - Left	On left front outboard seat track. See Fig. 77.
Inflatable Restraint Seat Position Sensor (SPS) - Right	On right front outboard seat track. See Fig. 78.
Inflatable Restraint Side Impact Sensor (SIS)-Left	In left front door, near door latch. See Fig. 79.
Inflatable Restraint Side Impact Sensor (SIS)-Right	In right front door, near door latch. See Fig. 80.
Input Speed Sensor (ISS) Assembly	Inside automatic transmission. See Fig. 38.
Intrusion Sensor 1	Part theft deterrent module.
Intrusion Sensor 2	Part of theft deterrent module.
Knock Sensor (KS) 1 - Front (4.2L)	On lower left front of engine block. See Fig. 26.
Knock Sensor (KS) 1 - Left	Lower left side of engine. See Fig. 81.
Knock Sensor (KS) 2 - Rear (4.2L)	On lower left rear of engine block. See Fig. 26.
Knock Sensor (KS) 2 - Right	Right side of engine block. See Fig. 23.
Lumbar Horizontal Position Sensor (Driver)	In driver seat back. See Fig. 82.
Manifold Absolute Pressure (MAP) Sensor (4.2L)	On upper left side of engine. See Fig. 65.
Manifold Absolute Pressure (MAP) Sensor (5.3L/6.0L) (4)	On top of engine. See Fig. 20.
Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor (4.2L)	In air intake duct. See Fig. 51.
Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor (5.3L/6.0L)	In air intake duct. See Fig. 22.
Propshaft Speed Sensor - Front (23)	On left front of transfer case. See Fig. 34.
Propshaft Speed Sensor - Rear (21)	On right rear of transfer case. See Fig. 34.
Rollover Sensor	Under Middle rear floor carpet. See Fig. 86.
Seat Position Sensor (Front)	Under driver seat. See Fig. 77.
Seat Position Sensor (Horizontal)	Under driver seat. See Fig. 77.
Seat Position Sensor (Rear)	Under driver seat. See Fig. 77.
Seat Position Sensor (Recline)	Under driver seat. See Fig. 77.
Steering Wheel Speed/Position Sensor	At base of steering column.
Vehicle Speed Sensor (VSS)	Inside automatic transmission assembly. See Fig. 38.
Wheel Speed Sensor-LF	On left front wheel hub assembly. See Fig. 9.
Wheel Speed Sensor-RF	On right front wheel hub assembly. See Fig. 9.
Wheel Speed Sensor (WSS) - LR	Attached to left rear wheel hub.
Wheel Speed Sensor (WSS) - RR	Attached right rear wheel hub.
Yaw Rate & Lateral Acceleration Sensor	Below front passenger's seat. See Fig. 94.

GMC Envoy 2008 - SOLENOIDS & SOLENOID VALVES

GMC Envoy 2008 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor Clutch (4.2L)	On A/C compressor. See Fig. 39.
A/C Compressor Clutch (5.3L/6.0L)	On A/C Compressor. See Fig. 40.
Camshaft Actuator Solenoid Assembly	On right front of cylinder head. See Fig. 51.
Evaporative Emission (EVAP) Canister Purge Solenoid (4.2L)	Lower left side of engine. See Fig. 26.
Evaporative Emission (EVAP) Canister Purge Solenoid (5.3L/6.0L) (2)	On top of engine. See Fig. 20.
Evaporative Emission (EVAP) Canister Vent Solenoid (10)	At rear of fuel tank. See Fig. 34.
Fuel Injector 1 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 1 (5.3L/6.0L) (1)	Upper left side of engine. See Fig. 20.
Fuel Injector 2 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 2 (5.3L/6.0L) (5)	Upper right side of engine. See Fig. 21.
Fuel Injector 3 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 3 (5.3L/6.0L) (3)	Upper left side of engine. See Fig. 20.
Fuel Injector 4 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 4 (5.3L/6.0L) (4)	Upper right side of engine. See Fig. 21.
Fuel Injector 5 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 5 (5.3L/6.0L) (5)	Upper left side of engine. See Fig. 20.
Fuel Injector 6 (4.2L)	Top of engine. See Fig. 27.
Fuel Injector 6 (5.3L/6.0L) (3)	Upper right side of engine. See Fig. 21.
Fuel Injector 7 (5.3L/6.0L) (6)	Upper left side of engine. See Fig. 20.
Fuel Injector 8 (5.3L/6.0L) (2)	Upper right side of engine. See Fig. 21.
Pressure Control (PC) Solenoid Valve	Inside automatic transmission assembly. See Fig. 38.
Secondary Air Injection (AIR) Solenoid	Upper right side of engine. See Fig. 87.
Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve	Inside automatic transmission assembly. See Fig. 38.
Torque Converter Clutch (TCC) Solenoid Valve	Inside automatic transmission valve body. See Fig. 38.
1-2 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 38.
2-3 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 38.
3-2 Shift Solenoid (SS) Valve Assembly	Inside automatic transmission assembly. See Fig. 38.

GMC Envoy 2008 - SWITCHES

GMC Envoy 2008 SWITCHES LOCATION

Component	Location
A/C Low Pressure Switch	At right rear of engine compartment, on accumulator. See Fig. 41.
Air Suspension Inflator Switch	On right side of cargo area, on trim panel. See Fig. 6.
Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch	Inside automatic transmission assembly. See Fig. 38.
Brake Fluid Level Switch	On brake master cylinder fluid reservoir. See Fig. 50.
Engine Oil Pressure (EOP) Switch	At lower right of engine block. See Fig. 51.
Ignition Key Alarm Switch (3)	In steering column. See Fig. 73.
Ignition Switch (6)	In steering column. See Fig. 73.
Liftgate Ajar Switch (7)	In liftgate. See Fig. 17.
Park Brake Switch	On parking brake assembly. See Fig. 8.
Park/Neutral Position (PNP) Switch	On lower left side of transmission. See Fig. 85.
Stop Lamp Switch	On brake pedal assembly. See Fig. 25.
Windshield Washer Fluid Level Switch	Mounted on windshield washer fluid reservoir. See Fig. 18.

GMC Envoy 2008 - MISCELLANEOUS

GMC Envoy 2008 MISCELLANEOUS LOCATION

Component	Location
Audio Amplifier	On right side of cargo area, behind trim panel. See Fig. 16.
Battery (4.2L)	Left front of engine compartment. See Fig. 48.
Battery (5.3L/6.0L)	Left front of engine compartment. See Fig. 115.
Blower Motor Resistor Assembly	Below right side of dash, near blower motor. See Fig. 114.
Cellular Microphone	In overhead console. See Fig. 53.
Data Link Connector (DLC) (3)	On bottom left side of dash. See Fig. 56.
Digital Radio Receiver (1)	Right side of dash, behind glove box. See Fig. 57.
Electronic Adjustable Pedal (EAP) Assembly (3)	On pedals assembly. See Fig. 14.
Generator (4.2L)	Left front of engine (4.2L). See Fig. 66.
Generator (5.3L/6.0L)	Top front of engine. See Fig. 67.
Heated Seat Element (Driver Seat Back)	Behind seat back upholstery.
Heated Seat Element (Driver Seat Cushion)	Behind seat cushion upholstery.
Heated Seat Element (Passenger Seat Back)	Behind seat back upholstery.
Heated Seat Element (Passenger Seat Cushion)	Behind seat cushion upholstery.
Horn Assembly	Lower left front of radiator support. See Fig. 71.
Ignition Coil 1 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 1 (5.3L/6.0L) (13)	On top of valve cover, above respective cylinder. See Fig. 20.
Ignition Coil 2 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 2 (5.3L/6.0L) (7)	On top of valve cover, above respective cylinder. See Fig. 21.
Ignition Coil 3 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 3 (5.3L/6.0L) (12)	On top of valve cover, above respective cylinder. See Fig. 20.
Ignition Coil 4 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 4 (5.3L/6.0L) (8)	On top of valve cover, above respective cylinder. See Fig. 21.
Ignition Coil 5 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 5 (5.3L/6.0L) (9)	On top of valve cover, above respective cylinder. See Fig. 20.
Ignition Coil 6 (4.2L)	Top of engine. See Fig. 27.
Ignition Coil 6 (5.3L/6.0L) (11)	On top of valve cover, above respective cylinder. See Fig. 21.
Ignition Coil 7 (5.3L/6.0L) (8)	On top of valve cover, above respective cylinder. See Fig. 20.
Ignition Coil 8 (5.3L/6.0L) (12)	On top of valve cover, above respective cylinder. See Fig. 21.
Inflatable Restraint Steering Wheel Module Coil	In steering wheel column.
Rear Blower Resistor (3)	Attached to rear blower motor. See Fig. 29.
Seat Belt Pretensioner - Left	Under left front of seat, part of retractor. See Fig. 82.
Seat Belt Pretensioner - Right	Under right front of seat, part of retractor. See Fig. 83.
Theft Deterrent Alarm	Attached to rear frame, above spare tire. See Fig. 89.
Throttle Body (4.2L)	Front of intake duct. See Fig. 65.
Throttle Body (5.3L/6.0L) (6)	Front of intake duct. See Fig. 21.
Trailer Connector	Under center of rear bumper. See Fig. 113.
Valve Lifter Oil Manifold (VLOM) Assembly	At top rear of engine. See Fig. 93.

GMC Envoy 2008 - CONNECTORS

GMC Envoy 2008 CONNECTORS LOCATION

Component	Location
X100 (Black, 12 Pin) (9)	I/P harness to engine harness, in underhood compartment, to left of engine. See Fig. 30.
X101 (Gray, 40 Pin) (1)	I/P harness to chassis harness, in underhood compartment, to right of underhood fuse block. See Fig. 30.
X102 (Black, 4 Pin) (4)	Near left headlight assembly. See Fig. 31.
X103 (Black, 4 Pin) (18)	Near right headlight assembly. See Fig. 31.
X104 (Black, 8 Pin) (3)	At rear of engine, near coil No. 6. See Fig. 95.
X105 (Black, 10 Pin) (1)	Forward lamp harness to I/P harness, underhood compartment, near underhood fuse block. See Fig. 31.
X107 (4.2L) (Black, 40 Pin) (5)	Left of engine, near X101. See Fig. 30.
X107 (5.3L/6.0L) (Black, 38 Pin) (5)	Left of engine, near X101. See Fig. 30.
X108 (Light Gray, 7 Pin) (10)	In coils harness to engine harness, on top of right bank valve cover. See Fig. 21.
X109 (Light Gray, 7 Pin) (11)	In coils harness to engine harness, on top of left bank valve cover. See Fig. 20.
X110 (Black, 3 Pin) (2)	Left front of engine block, below camshaft position sensor. See Fig. 52.
X111 (Black, 6 Pin)	I/P harness to body harness, in rear floor area, near X304.
X118 (Black, 6 pin) (2)	On upper left of fan shroud. See Fig. 55.
X175 (Gray, 16 Pin) (16)	On right side of transmission. See Fig. 95.
X201 (Black, 17 Pin) (24)	Steering column harness to I/P harness, lower part of steering column. See Fig. 96.
X202 (Black, 4 Pin) (8)	I/P harness to body harness, lower right side of dash. See Fig. 96.
X203 (Yellow, 4 Pin) (9)	I/P harness to body harness, lower right side of dash. See Fig. 96.
X204 (Black, 4 Pin) (2)	I/P harness to auxiliary blower motor harness, below center of dash. See Fig. 29.
X220 (Black, 6 Pin) (3)	Right side of dash, behind glove box. See Fig. 57.
X221 (Black, 8 Pin) (2)	Under right side of dash. See Fig. 57.
X225 (Black, 10 pin) (2)	On brake pedal assembly. See Fig. 14.
X275 (Yellow, 4 Pin) (25)	At steering column. See Fig. 96.
X277 (Black, 8 Pin)	In steering wheel, under horn pad.
X300 (Black, 8 Pin) (12)	Right of floor shifter. See Fig. 96.
X304 (Blue, 40 Pin) (17)	I/P harness to body harness, under carpet, rear floor area. See Fig. 96.
X305 (Black, 16 Pin) (6)	Overhead console harness to headliner harness, inside upper console. See Fig. 97.
X306 (Black, 16 Pin) (19)	Body harness to headliner harness, under carpet, at rear floor area. See Fig. 36.
X307 (Gray, 18 Pin) (4)	Beneath lower console. See Fig. 37.
X308 (Black, 6 Pin) (2)	Headliner harness to sun roof harness, above left rear door. See Fig. 97.
X310 (Black, 2 Pin) (6)	Chassis harness to engine harness, near transfer case. See Fig. 34.
X311 (Deluxe Bucket Seats) (Black, 18 Pin) (18)	Body harness to seat harness, lower front of driver's seat. See Fig. 36.
X311 (Standard Bucket Seats) (Black, 4 Pin) (18)	Body harness to seat harness, lower front of driver's seat. See Fig. 36.
X314 (Black, 16 Pin) (20)	Body harness to seat harness, lower front of passenger seat. See Fig. 36.
X317 (Yellow, 2 Pin) (2)	Under driver's seat pretensioner. See Fig. 99.
X318 (Yellow, 2 Pin) (2)	Under passenger's seat pretensioner. See Fig. 100.
X500 (Black, 12 Pin) (1)	Body harness to left front door harness, at midpoint of leading edge of door. See Fig. 101.
X600 (Black, 12 Pin) (6)	Body harness to right front door harness, at midpoint of leading edge of door. See Fig. 102.
X700 (Black, 10 Pin) (1)	Body harness to left rear door harness, at midpoint of leading edge of door. See Fig. 60.
X800 (Black, 10 Pin) (1)	Body harness to right rear door harness, at midpoint of leading edge of door. See Fig. 61.
X900 (Black, 6 Pin) (3)	Body harness to liftgate harness, at top of liftgate. See Fig. 17.
X901 (Light Gray, 2 Pin) (6)	Liftgate harness to license lamp harness, inside liftgate. See Fig. 17.
X904 (Black, 1 pin) (4)	At top left of liftgate. See Fig. 17.
X905 (Black, 1 pin) (2)	At top right of liftgate. See Fig. 17.

GMC Envoy 2008 - GROUNDS

GMC Envoy 2008 GROUNDS LOCATION

Component	Location
G101	Left side of engine compartment, near front of underhood fuse block. See Fig. 103.
G102 (4)	Left side of engine compartment, near rear of underhood fuse block. See Fig. 30.
G103 (13)	Left front of engine compartment, on left side of radiator support. See Fig. 31.
G104 (2)	On underside of hood, near underhood compartment lamp. See Fig. 30.
G105 (3)	In engine compartment, on firewall, near I/P harness pass-through. See Fig. 30.
G106	On engine side of left front wheelwell. See Fig. 103.
G107 (4.2L)	On lower left side of engine. See Fig. 105.
G107 (5.3L/6.0L)	On lower left side of engine. See Fig. 104.
G108 (4.2L)	On lower left side of engine. See Fig. 105.
G108 (5.3L/6.0L)	On lower left side of engine. See Fig. 104.
G109 (4.2L)	On lower left side of engine. See Fig. 105.
G109 (5.3L/6.0L)	On lower left side of engine. See Fig. 106.
G110 (4.2L)	On lower left side of engine. See Fig. 105.
G110 (5.3L/6.0L)	On lower left side of engine. See Fig. 107.
G201	Ground splice pack near, right front of lower console.
G302 (14)	On lower left "B" pillar. See Fig. 36.
G303 (28)	On lower right "B" pillar. See Fig. 36.
G304 (25)	On outside of left frame rail, near electronic brake control module. See Fig. 34.
G305 (20)	On outside of left frame rail, near fuel tank. See Fig. 34.
G306	On body panel, rear of left rear door. See Fig. 108.
G401	On lower left "D" pillar. See Fig. 109.
G402 (37)	On lower right "D" pillar. See Fig. 36.
G403	On left side of rear frame crossmember. See Fig. 110.

GMC Envoy 2008 - SPLICES

GMC Envoy 2008 SPLICES LOCATION

Component	Location
JX201 (Splice Pack) (24)	At lower right front of lower console. See Fig. 35.
JX205 (Splice Pack) (4)	Behind left of dash, near headlight switch connector. See Fig. 56.
JX306 (Splice Pack) (1)	In body harness, under right rear seat. See Fig. 36.
J100 (24)	In engine harness, 10 cm from breakout to ECM. See Fig. 32.
J101 (4.2L)	In engine harness, 15 cm from breakout to PCM.
J101 (5.3L/6.0L) (10)	In engine harness, 4 cm from breakout to X107. See Fig. 33.
J102 (5)	In engine harness, 22 cm before breakout to MAP sensor. See Fig. 33.
J103 (12)	In forward lamp harness, 8 cm from rear washer pump motor breakout. See Fig. 31.
J104 (11)	In forward lamps harness, 6 cm before breakout to right side marker, cornering & park lamps. See Fig. 31.
J105 (9)	In engine harness, 10 cm from breakout to X107. See Fig. 33.
J106 (24)	In forward lamps harness, 5.5 cm before breakout to left side marker, cornering & park lamps. See Fig. 31.
J107 (22)	In forward lamp harness, 9 cm from breakout to left front fog lamp. See Fig. 31.
J108	In ignition coil jumper harness, 5 cm from breakout to X108.
J109	In ignition coil jumper harness, 5 cm from breakout to X109.
J111	In fuel injector harness.
J112 (2)	In engine harness, 5 cm from breakout to X109. See Fig. 32.
J113 (20)	In forward lamp harness, 19.5 cm from windshield washer fluid pump breakout. See Fig. 31.
J117 (8)	In I/P harness, 8.5 cm from X100 breakout. See Fig. 30.
J118	In ignition coil jumper harness, 5 cm from breakout to X108.
J119	In ignition coil jumper harness, 5 cm from breakout to X109.
J128	In ignition coil jumper harness, 5 cm from breakout to X108.
J129	In ignition coil jumper harness, 5 cm from breakout to X109.
J133	In automatic transmission.
J134	In automatic transmission.
J201 (29)	In I/P harness, 4 cm from breakout to inflatable restraint I/P module. See Fig. 35.
J202 (17)	I/P harness, 16.5 cm from steering column connector breakout. See Fig. 35.
J203 (21)	In I/P harness, 5 cm from breakout to rollover sensor. See Fig. 96.
J205	In chassis harness, 8 cm from breakout to electronic brake control module.
J211 (21)	In I/P harness, 16 cm from SP201 breakout. See Fig. 35.
J216 (3)	In I/P harness, 15.5 cm from recirculation actuator connector. See Fig. 35.
J217 (18)	In I/P harness, 5 cm from mode motor breakout. See Fig. 35.
J220 (15)	In I/P harness, 33.5 cm before breakout to inflatable restraint sensing & diagnostic module. See Fig. 96.
J226	In steering column harness.
J230 (22)	In I/P harness, 5 cm from JX201 breakout. See Fig. 35.
J232	In I/P harness, 10 cm from breakout to steering wheel coils.
J239 (16)	In I/P harness, above dash left lower panel, 11 cm from steering column breakout. See Fig. 35.
J250 (28)	In I/P harness, 33 cm from blower motor resistor assembly. See Fig. 35.
J271 (26)	In I/P harness, 14.5 cm from dash compartment lamp breakout. See Fig. 35.
J302 (15)	In body harness 5 cm from main harness breakout for X700. See Fig. 36.
J303 (27)	In body harness 5 cm from main harness breakout for X800. See Fig. 36.
J304	In driver seat main power harness, 5 cm from breakout memory seat module connector C1.
J305	In driver seat main power harness, 7 cm from breakout memory seat module connector C1.
J306 (8)	In chassis harness, 13 cm back from breakout to fuel pump & sender assembly. See Fig. 34.
J307 (3)	In floor console harness, 9 cm from breakout to auxiliary mode actuator. See Fig. 37.
J308	In passenger seat harness, 15 cm from breakout to X314.
J310 (26)	In body harness, 9 cm from breakout to X314. See Fig. 36.
J311	In driver's seat main power harness, 4.5 cm from lumbar switch breakout.
J312 (11)	In main headliner harness, 80 cm from X308 breakout. See Fig. 97.
J313	Driver's seat motor harness, 17 cm from seat module connector C2.
J314	Driver's seat motor harness, 24 cm from seat module connector C2.
J315 (W/ Memory)	In driver seat harness, 11.5 cm from X311.
J316	In passenger seat main power harness, 25 cm back from lumbar adjuster switch connector.
J317 (W/ Heat)	In passenger seat main power harness, 14.5 cm back from lumbar adjuster switch connector.
J317 (W/O Heat)	In passenger seat main power harness, 5 cm from breakout to lumbar adjuster switch connector.
J318	In driver's seat harness, 7 cm from breakout to body connector.
J319	In passenger seat harness, 7 cm from breakout to body connector.
J320 (22)	In I/P harness, 18 cm from automatic transmission shift lever connector breakout. See Fig. 96.
J321	In I/P harness channel between rear seat & console, 32 cm forward from X301/X304 breakout.
J322 (7)	In headliner harness, 16 cm from ISRVM breakout, toward right sun shade mirror lamp. See Fig. 97.
J327	In driver seat harness, 6.5 cm from breakout to driver cushion heated seat element.
J330	In overhead console harness.
J331 (5)	In headliner harness, 17 cm from left sun shade mirror lamp breakout, toward X305. See Fig. 97.
J332	In overhead console harness.
J341	In headliner harness, 6.5 cm from breakout to left clearance lamp.
J359 (19)	In chassis harness, 13 cm before breakout to fuel pump & sender assembly. See Fig. 34.
J362 (3)	In body harness channel on rear floor, 6 cm to left of JX306. See Fig. 36.
J374 (2)	In body harness channel on rear floor, 12 cm to left of JX306. See Fig. 36.
J390 (4)	In headliner harness, 26 cm from left front dome/reading lamp. See Fig. 97.
J401 (6)	In body harness, 7.5 cm from G401 breakout. See Fig. 36.
J402 (33)	In body harness, 7.5 cm from G402 breakout. See Fig. 36.
J408 (15)	In chassis harness, 9.5 cm from breakout to right backup lamp. See Fig. 34.
J901 (7)	In liftgate harness, 22 cm from liftgate module breakout. See Fig. 17.