GMC Envoy 2007 - 2007 GENERAL MOTORS Envoy, Rainier & TrailBlazer

GMC Envoy 2007 - BUZZERS, RELAYS & TIMERS

GMC Envoy 2007 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Relay (4.2L)	On underhood fuse block. See Fig. 114.
A/C Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
AIR SOL Relay	In underhood fuse block. See Fig. 114.
EAP Relay (4.2L)	In underhood fuse block. See Fig. 114.
EAP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
Electronic Adjustable Pedals (EAP) Relay	Left side of dash, on pedal assembly. See Fig. 20.
FAN Relay (4.2L)	In underhood fuse block. See Fig. 114.
FAN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
FOG LAMP Relay (4.2L)	On underhood fuse block. See Fig. 114.
FOG LAMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
FUEL PUMP Relay (4.2L)	On underhood fuse block. See Fig. 114.
FUEL PUMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
HDM Relay (4.2L)	In underhood fuse block. See Fig. 114.
HDM Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
HEADLAMP WPR Relay (4.2L)	In underhood fuse block. See Fig. 114.
HEADLAMP WPR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
HI HEADLAMP Relay (4.2L)	In underhood fuse block. See Fig. 114.
HI HEADLAMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
HORN Relay (4.2L)	On underhood fuse block. See Fig. 114.
HORN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
LOCK Relay	In rear fuse block. See Fig. 128.
PARK LP Relay	In rear fuse block. See Fig. 128.
PWR/TRN Relay (4.2L)	In underhood fuse block. See Fig. 114.
PWR/TRN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
REAR/WPR Relay (4.2L)	On underhood fuse block. See Fig. 114.
REAR/WPR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
RR FOG LP Relay	In rear fuse block. See Fig. 128.
Secondary Air Injection (AIR) Pump Relay	Left front of chassis. See Fig. 36.
STRTR Relay (4.2L)	On underhood fuse block. See Fig. 114.
STRTR Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.
UNLOCK Relay	On rear fuse block. See Fig. 128.
WSW Relay (4.2L)	On underhood fuse block. See Fig. 114.
WSW Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 127.

GMC Envoy 2007 - CIRCUIT PROTECTION DEVICES

GMC Envoy 2007 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Rear Fuse Block	Below left rear seat. See Fig. 102.
Underhood Fuse Block	Above left front wheelwell. See Fig. 1.

GMC Envoy 2007 - CONTROL UNITS

GMC Envoy 2007 CONTROL UNITS LOCATION

Component	Location
Blower Motor Control Module	Below right side of dash. See Fig. 63.
Body Control Module (BCM)	Beneath left rear seat, on rear fuse block. See Fig. 102.
Driver Door Module (DDM)	Below driver's door switch panel.
Electronic Brake Control Module (EBCM)	On inner left frame rail, beside transmission. See Fig. 132.
Engine Control Module (ECM)	Near lower left front of engine. See Fig. 77.
Front Passenger Door Module (FPDM)	Below front passenger door switch panel.
HVAC Control Module (Automatic A/C)	Center of dash. See Fig. 86.
HVAC Control Module-Auxiliary	Under lower console. See Fig. 68.
HVAC Control Module (Manual A/C)	Center of dash. See Fig. 8.
Inflatable Restraint Front Passenger Presence System (PPS) Module	Under passenger seat. See Fig. 90.
Inflatable Restraint I/P Module	Left side of dash. See Fig. 17.
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. 19.
Inflatable Restraint Steering Wheel Module	In steering wheel. See Fig. 18.
Liftgate Module (LGM)	In center of liftgate. See Fig. 23.
Memory Seat Module (Driver)	Below left front seat. See Fig. 99.
Powertrain Control Module (PCM)	On upper left side of engine. See Fig. 80.
Regulated Voltage Control Module	Behind battery. See Fig. 62.
Theft Deterrent Control Module	In steering column. See Fig. 106.
Transfer Case Shift Control Module	Behind lower left side of dash. See Fig. 107.
Transmission Control Module (TCM)	Left front of engine. See Fig. 108.
Turn Signal/Hazard Flasher Module	Behind lower left side of dash. See Fig. 70.
Vehicle Communication Interface Module (VCIM)	Under right rear seat. See Fig. 21.

GMC Envoy 2007 - MOTORS

GMC Envoy 2007 MOTORS LOCATION

Component	Location
Air Suspension Compressor Assembly	Behind right rear wheelwell. See Fig. 10.
Air Temperature Actuator (Left)	Below left center of dash. See Fig. 6.
Air Temperature Actuator (Right)	Behind right center of dash. See Fig. 6.
Automatic Transmission Shift Lock Actuator	In floor shifter. See Fig. 14.
Blower Motor	Below right side of dash. See Fig. 63.
Console Mode Actuator (Auxiliary)	Under lower console. See Fig. 68.
Cooling Fan	Front of engine. See Fig. 69.
Defrost Actuator	On upper dash carrier. See Fig. 6.
Door Latch Assembly (Driver)	In left front door. See Fig. 72.
Door Latch Assembly (Left Rear)	In left rear door. See Fig. 74.
Door Latch Assembly (Passenger)	In right front door. See Fig. 73.
Door Latch Assembly (Right Rear)	In right rear door. See Fig. 75.
Front Axle Actuator	On inner flange of right front axle. See Fig. 11.
Fuel Pump & Sender Assembly	Top of fuel tank. See Fig. 32.
Headlamp Leveling Actuator (Left)	Behind left headlight. See Fig. 82.
Headlamp Leveling Actuator (Right)	Behind right headlight. See Fig. 83.
Headlamp Washer Fluid Pump	Right front of engine compartment. See Fig. 24.
Ignition Lock Cylinder Control Actuator	In upper steering column. See Fig. 87.
Liftgate Latch Assembly	In liftgate assembly. See Fig. 23.
Lumbar Horizontal Motor (Driver)	In driver seat back. See Fig. 97.
Lumbar Horizontal Motor (Passenger)	In passenger seat back. See Fig. 98.
Mode Actuator	Behind upper left center of dash. See Fig. 6.
Rear Blower Motor	Under center of dash. See Fig. 37.
Rear Window Washer Fluid Pump	On washer fluid reservoir. See Fig. 24.
Rear Window Wiper Motor	Inside tailgate. See Fig. 23.
Recirculation Actuator	On right side of dash. See Fig. 7.
Seat Front Vertical Motor (Driver)	Under driver seat. See Fig. 92.
Seat Front Vertical Motor (Passenger)	Under passenger seat. See Fig. 93.
Seat Horizontal Motor (Driver)	Under driver seat. See Fig. 92.
Seat Horizontal Motor (Passenger)	Under passenger seat. See Fig. 93.
Seat Rear Vertical Motor (Driver)	Under driver seat. See Fig. 92.
Seat Rear Vertical Motor (Passenger)	Under passenger seat. See Fig. 93.
Seat Recline Motor (Driver)	Under driver seat. See Fig. 92.
Seat Recline Motor (Passenger)	Under passenger seat. See Fig. 93.
Secondary Air Injection (AIR) Pump	Left front of chassis, near electronic brake control module. See Fig. 36.
Starter (4.2L)	Left rear of engine. See Fig. 33.
Starter (5.3L/6.0L)	Right side of engine. See Fig. 29.
Sunroof Motor	Above headliner, at rear of sun roof assembly. See Fig. 104.
Transfer Case Encoder Motor	Part of transfer case. See Fig. 46.
Window Motor (Driver)	In left front door. See Fig. 72.
Window Motor (Front Passenger)	In right front door. See Fig. 73.
Window Motor (Left Rear)	In left rear door. See Fig. 74.
Window Motor (Right Rear)	In right rear door. See Fig. 75.
Windshield Washer Fluid Pump	On washer fluid reservoir. See Fig. 24.
Windshield Wiper Motor	On upper center of firewall. See Fig. 25.

GMC Envoy 2007 - SENDING UNITS & SENSORS

GMC Envoy 2007 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position (APP) Sensor	Above accelerator pedal, on bracket. See Fig. 20.
A/C Refrigerant Pressure Sensor	On high pressure line, near A/C compressor. See Fig. 56.
Air Suspension Sensor-LR	On frame rail, near left rear suspension arm. See Fig. 10.
Air Suspension Sensor-RR	On frame rail, near right rear suspension arm. See Fig. 10.
Air Temperature Sensor (Inside)	In left "B" pillar. See Fig. 57.
Air Temperature Sensor (Lower Left)	Left of lower console, in air duct. See Fig. 60.
Air Temperature Sensor (Lower Right)	In right lower console, in air duct. See Fig. 58.
Air Temperature Sensor (Upper Left)	Left center of dash, in air duct. See Fig. 59.
Air Temperature Sensor (Upper Right)	Right center of dash, in air duct. See Fig. 59.
Ambient Air Temperature Sensor	On left center of radiator support. See Fig. 9.
Ambient Light Sensor	On top center of dash. See Fig. 61.
Ambient Light/Sun Load Sensor	On top center of dash, near base of windshield. See Fig. 61.
Brake Booster Vacuum Sensor	On power brake booster. See Fig. 30.
Camshaft Position (CMP) Sensor (4.2L)	On right front of engine block. See Fig. 65.
Camshaft Position (CMP) Sensor (5.3L/6.0L)	At bottom front of engine. See Fig. 66.
Crankshaft Position (CKP) Sensor (4.2L)	On left rear of engine block, below starter. See Fig. 33.
Crankshaft Position (CKP) Sensor (5.3L/6.0L)	At right rear of engine, adjacent to starter. See Fig. 29.
Electronic Frontal Sensor (EFS) - Left	On left side of frame, at front of vehicle. See Fig. 76.
Electronic Frontal Sensor (EFS) - Right	On right side of frame, at front of vehicle. See Fig. 76.
Engine Coolant Temperature (ECT) Sensor (4.2L)	Lower right rear of engine block. See Fig. 79.
Engine Coolant Temperature (ECT) Sensor (5.3L/6.0L)	On left front of engine block, near generator. See Fig. 78.
Engine Oil Pressure (EOP) Sensor	At rear of engine.
Fuel Tank Pressure (FTP) Sensor	At top left rear of fuel tank. See Fig. 32.
Heated Oxygen Sensor Bank 1 Sensor 1 (5.3L/6.0L)	In left bank exhaust pipe, ahead of catalytic converter. See Fig. 84.
Heated Oxygen Sensor Bank 1 Sensor 2 (5.3L/6.0L)	In left bank of exhaust pipe, behind catalytic converter. See Fig. 84.
Heated Oxygen Sensor Bank 2 Sensor 1 (5.3L/6.0L)	In right bank OF exhaust pipe, ahead of catalytic converter. See Fig. 84.
Heated Oxygen Sensor Bank 2 Sensor 2 (5.3L/6.0L)	In right bank of exhaust pipe, behind catalytic converter. See Fig. 84.
Heated Oxygen Sensor (HO2S) 1 (4.2L)	On exhaust manifold, on right side of engine. See Fig. 65.
Heated Oxygen Sensor (HO2S) 2 (4.2L)	Downstream of catalytic converter, on exhaust pipe. See Fig. 35.
Inclination Sensor	Under right rear seat. See Fig. 89.
Inflatable Restraint Front Passenger Presence System (PPS) Sensor	Under passenger seat. See Fig. 90.
Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor	Integral to passenger seat bet retractor. See Fig. 91.
Inflatable Restraint Seat Position Sensor (SPS) - Left	On left front outboard seat track. See Fig. 92.
Inflatable Restraint Seat Position Sensor (SPS) - Right	On right front outboard seat track. See Fig. 93.
Inflatable Restraint Side Impact Sensor (SIS)-Left	In left front door, near door latch. See Fig. 94.
Inflatable Restraint Side Impact Sensor (SIS)-Right	In right front door, near door latch. See Fig. 95.
Input Speed Sensor (ISS) Assembly	Inside automatic transmission. See Fig. 52.
Intrusion Sensor 1	Part theft deterrent module.
Intrusion Sensor 2	Part of theft deterrent module.
Knock Sensor (KS) 1 - Left	Lower left side of engine. See Fig. 96.
Knock Sensor (KS) 2 - Right	Right side of engine block. See Fig. 29.
Knock Sensor 1 - Front (4.2L)	On lower left front of engine block. See Fig. 33.
Knock Sensor 2 - Rear (4.2L)	On lower left rear of engine block. See Fig. 33.
Lumbar Horizontal Position Sensor (Driver)	In driver seat back. See Fig. 97.
Manifold Absolute Pressure (MAP) Sensor (4.2L)	On upper left side of engine. See Fig. 79.
Manifold Absolute Pressure (MAP) Sensor (5.3L/6.0L)	On top of engine. See Fig. 26.
Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor (4.2L)	In air intake duct. See Fig. 65.
Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor (5.3L/6.0L)	In air intake duct. See Fig. 28.
Passlock Sensor	In steering column.
Propshaft Speed Sensor - Front	On left front of transfer case. See Fig. 101.
Propshaft Speed Sensor - Rear	On right rear of transfer case. See Fig. 101.
Rollover Sensor	Under Middle rear floor carpet. See Fig. 102.
Seat Position Sensor (Front)	Under driver seat. See Fig. 92.
Seat Position Sensor (Horizontal)	Under driver seat. See Fig. 92.
Seat Position Sensor (Rear)	Under driver seat. See Fig. 92.
Seat Position Sensor (Recline)	Under driver seat. See Fig. 92.
Steering Wheel Speed/Position Sensor	At base of steering column.
VSS Sensor	On left rear of transfer case. See Fig. 16.
Wheel Speed Sensor-LF	On left front wheel hub assembly. See Fig. 13.
Wheel Speed Sensor-RF	On right front wheel hub assembly. See Fig. 13.
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. 110.

GMC Envoy 2007 - SOLENOIDS & SOLENOID VALVES

GMC Envoy 2007 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor Clutch (4.2L)	On A/C compressor. See Fig. 53.
A/C Compressor Clutch (5.3L/6.0L)	On A/C Compressor. See Fig. 54.
Camshaft Actuator Solenoid Assembly	On right front of cylinder head. See Fig. 65.
Evaporative Emission (EVAP) Canister Purge Solenoid (4.2L)	Lower Left Side Of Engine. See Fig. 33.
Evaporative Emission (EVAP) Canister Purge Solenoid (5.3L/6.0L)	On top of engine. See Fig. 26.
Evaporative Emission (EVAP) Canister Vent Solenoid	At rear of fuel tank. See Fig. 32.
Fuel Injector 1 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 1 (5.3L/6.0L)	Upper left side of engine. See Fig. 26.
Fuel Injector 2 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 2 (5.3L/6.0L)	Upper right side of engine. See Fig. 27.
Fuel Injector 3 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 3 (5.3L/6.0L)	Upper left side of engine. See Fig. 26.
Fuel Injector 4 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 4 (5.3L/6.0L)	Upper right side of engine. See Fig. 27.
Fuel Injector 5 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 5 (5.3L/6.0L)	Upper left side of engine. See Fig. 26.
Fuel Injector 6 (4.2L)	Top of engine. See Fig. 34.
Fuel Injector 6 (5.3L/6.0L)	Upper right side of engine. See Fig. 27.
Fuel Injector 7 (5.3L/6.0L)	Upper left side of engine. See Fig. 26.
Fuel Injector 8 (5.3L/6.0L)	Upper right side of engine. See Fig. 27.
Pressure Control (PC) Solenoid Valve	Inside automatic transmission assembly. See Fig. 52.
Secondary Air Injection (AIR) Solenoid	Upper right side of engine. See Fig. 103.
Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve	Inside automatic transmission assembly. See Fig. 52.
Torque Converter Clutch (TCC) Solenoid Valve	Inside automatic transmission valve body. See Fig. 52.
Torque Converter Clutch (TCC) Solenoid Valve	Inside transmission assembly. See Fig. 52.
1-2 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 52.
2-3 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 52.
3-2 Shift Solenoid (SS) Valve Assembly	Inside automatic transmission assembly. See Fig. 52.

GMC Envoy 2007 - SWITCHES

GMC Envoy 2007 SWITCHES LOCATION

Component	Location
A/C Low Pressure Switch	At right rear of engine compartment, on accumulator. See Fig. 55.
Air Suspension Inflator Switch	On right side of cargo area, on trim panel. See Fig. 10.
Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch	Inside automatic transmission assembly. See Fig. 52.
Brake Fluid Level Switch	On brake master cylinder fluid reservoir. See Fig. 64.
Engine Oil Pressure (EOP) Switch	At lower right of engine block. See Fig. 65.
Horn Switch	Under horn pad. See Fig. 88.
Ignition Key Alarm Switch	In steering column. See Fig. 87.
Ignition Switch	In steering column. See Fig. 87.
Intrusion Sensor Disable Switch	Part of theft deterrent module.
Liftgate Ajar Switch	In liftgate. See Fig. 23.
Lower Left Steering Wheel Control Switch Assembly (STW)	On steering wheel. See Fig. 88.
Lower Right Steering Wheel Control Switch Assembly (STW)	On steering wheel. See Fig. 88.
Park Brake Switch	On parking brake assembly. See Fig. 12.
Park/Neutral Position (PNP) Switch	On lower left side of transmission. See Fig. 100.
Stop Lamp Switch	On brake pedal assembly. See Fig. 31.
Turn Signal/Multifunction Switch	On steering column. See Fig. 88.
Windshield Washer Fluid Level Switch	Mounted on windshield washer fluid reservoir. See Fig. 24.

GMC Envoy 2007 - MISCELLANEOUS

GMC Envoy 2007 MISCELLANEOUS LOCATION

Component	Location
Audio Amplifier	On right side of cargo area, behind trim panel. See Fig. 22.
Battery (4.2L)	Left front of engine compartment. See Fig. 62.
Battery (5.3L/6.0L)	Left front of engine compartment. See Fig. 131.
Blower Motor Resistor Assembly	Below right side of dash, near blower motor. See Fig. 130.
Cellular Microphone	In overhead console. See Fig. 67.
Data Link Connector (DLC)	On bottom left side of dash. See Fig. 70.
Digital Radio Receiver	Right side of dash, behind glove box. See Fig. 71.
Electronic Adjustable Pedal (EAP) Assembly	On pedals assembly. See Fig. 20.
Generator (4.2L)	Left front of engine (4.2L). See Fig. 80.
Generator (5.3L/6.0L)	Top front of engine. See Fig. 81.
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. 85.
Ignition Coil 1 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 1 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 26.
Ignition Coil 2 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 2 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 27.
Ignition Coil 3 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 3 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 26.
Ignition Coil 4 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 4 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 27.
Ignition Coil 5 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 5 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 26.
Ignition Coil 6 (4.2L)	Top of engine. See Fig. 34.
Ignition Coil 6 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 27.
Ignition Coil 7 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 26.
Ignition Coil 8 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 27.
Inflatable Restraint Steering Wheel Module Coil	In steering wheel column.
Rear Blower Resistor	Attached to rear blower motor. See Fig. 37.
Seat Belt Pretensioner - Left	Under left front of seat, part of retractor. See Fig. 97.
Seat Belt Pretensioner - Right	Under right front of seat, part of retractor. See Fig. 98.
Theft Deterrent Alarm	Attached to rear frame, above spare tire. See Fig. 105.
Throttle Body (4.2L)	Front of intake duct. See Fig. 79.
Throttle Body (5.3L/6.0L)	Front of intake duct. See Fig. 27.
Trailer Connector	Under center of rear bumper. See Fig. 129.
Valve Lifter Oil Manifold (VLOM) Assembly	At top rear of engine. See Fig. 109.

GMC Envoy 2007 - CONNECTORS

GMC Envoy 2007 CONNECTORS LOCATION

Component	Location
C100 (Black, 12 Pin)	I/P harness to engine harness, in underhood compartment, to left of engine. See Fig. 38.
C101 (Black, 38 Pin)	I/P harness to chassis harness, in underhood compartment, to right of underhood fuse block. See Fig. 38.
C102 (Gray, 4 Pin)	Near left headlight assembly. See Fig. 39.
C103 (Gray, 4 Pin)	Near right headlight assembly. See Fig. 40.
C104 (Black, 8 Pin)	At rear of engine, near coil No. 6. See Fig. 111.
C105 (Black, 10 Pin)	Forward lamp harness to I/P harness, underhood compartment, near underhood fuse block. See Fig. 38.
C106 (Black, 2 Pin)	I/P harness to chassis harness.
C107 (Black, 38 Pin)	I/P harness to engine harness, in underhood compartment, near C101. See Fig. 38.
C108 (Gray, 7 Pin)	In coils harness to engine harness, on top of right bank valve cover. See Fig. 27.
C109 (Gray, 7 Pin)	In coils harness to engine harness, on top of left bank valve cover. See Fig. 26.
C110 (Black, 3 Pin)	Left front of engine block, below camshaft position sensor. See Fig. 66.
C111 (Black, 6 Pin)	I/P harness to body harness, in rear floor area, near C304.
C118 (Black, 6 pin)	On upper left of fan shroud. See Fig. 39.
C175 (20 Pin)	Engine harness to automatic transmission harness, on right side of transmission. See Fig. 15.
C201 (Black, 48 Pin)	Steering column harness to I/P harness, lower part of steering column. See Fig. 112.
C202 (Black, 4 Pin)	I/P harness to body harness, lower right side of dash. See Fig. 112.
C203 (Yellow, 4 Pin)	I/P harness to body harness, lower right side of dash. See Fig. 112.
C204 (Black, 4 Pin)	I/P harness to auxiliary blower motor harness, below center of dash. See Fig. 37.
C225 (Black, 10 pin)	On brake pedal assembly. See Fig. 20.
C275 (Yellow, 4 Pin)	At steering column. See Fig. 112.
C277 (Black, 8 Pin)	Under horn pad. See Fig. 88.
C300 (Black, 8 Pin)	Right of floor shifter. See Fig. 112.
C304 (Blue, 40 Pin)	I/P harness to body harness, under carpet, rear floor area. See Fig. 112.
C305 (Black, 16 Pin)	Overhead console harness to headliner harness, inside upper console. See Fig. 113.
C306 (Black, 16 Pin)	Body harness to headliner harness, under carpet, at rear floor area. See Fig. 112.
C307 (Gray, 18 Pin)	Beneath lower console. See Fig. 51.
C308 (Black, 6 Pin)	Headliner harness to sun roof harness, above left rear door. See Fig. 113.
C310 (Black, 2 Pin)	Chassis harness to engine harness, near transfer case. See Fig. 101.
C311 (Black, 4 Pin)	Body harness to seat harness, lower front of driver's seat. See Fig. 50.
C314 (Black, 16 Pin)	Body harness to seat harness, lower front of passenger seat. See Fig. 50.
C317 (Yellow, 2 Pin)	Under driver's seat pretensioner. See Fig. 115.
C318 (Yellow, 2 Pin)	Under passenger's seat pretensioner. See Fig. 116.
C500 (Black, 12 Pin)	Body harness to left front door harness, at midpoint of leading edge of door. See Fig. 117.
C600 (Black, 12 Pin)	Body harness to right front door harness, at midpoint of leading edge of door. See Fig. 118.
C700 (Natural, 17 Pin)	Body harness to left rear door harness, at midpoint of leading edge of door. See Fig. 74.
C800 (Natural, 17 Pin)	Body harness to right rear door harness, at midpoint of leading edge of door. See Fig. 75.
C900 (Black, 6 Pin)	Body harness to liftgate harness, at top of liftgate. See Fig. 23.
C901 (Light Gray, 2 Pin)	Liftgate harness to license lamp harness, inside liftgate. See Fig. 23.
C904 (Black, 1 pin)	At top left of liftgate. See Fig. 23.
C905 (Black, 1 pin)	At top right of liftgate. See Fig. 23.

GMC Envoy 2007 - GROUNDS

GMC Envoy 2007 GROUNDS LOCATION

Component	Location
G101	Left side of underhood compartment, near front of underhood fuse block. See Fig. 119.
G102	Left side of underhood compartment, near rear of underhood fuse block. See Fig. 2.
G103	Left front of underhood compartment, on left side of radiator support. See Fig. 40.
G104	On underside of hood, near underhood compartment lamp. See Fig. 2.
G105	In underhood compartment, on firewall, near I/P harness pass-through. See Fig. 2.
G106	On engine side of left front wheelwell. See Fig. 119.
G107 (4.2L)	On lower left side of engine. See Fig. 121.
G107 (5.3L/6.0L)	On lower left side of engine. See Fig. 120.
G108 (4.2L)	On lower left side of engine. See Fig. 121.
G108 (5.3L/6.0L)	On lower left side of engine. See Fig. 120.
G109 (4.2L)	On lower left side of engine. See Fig. 121.
G109 (5.3L/6.0L)	On lower left side of engine. See Fig. 122.
G110 (4.2L)	On lower left side of engine. See Fig. 121.
G110 (5.3L/6.0L)	On lower left side of engine. See Fig. 123.
G201	Ground splice pack near, right front of lower console.
G302	On lower left "B" pillar. See Fig. 3.
G303	On lower right "B" pillar.
G304	On outside of left frame rail, near electronic brake control module. See Fig. 4.
G305	On outside of left frame rail, near fuel tank. See Fig. 5.
G306	On body panel, rear of left rear door. See Fig. 124.
G401	On lower left "D" pillar. See Fig. 125.
G402	On lower right "D" pillar.
G403	On left side of rear frame crossmember. See Fig. 126.

GMC Envoy 2007 - SPLICES

GMC Envoy 2007 SPLICES LOCATION

Component	Location
SP201	At lower right front of lower console. See Fig. 48.
SP205	Behind left of dash, near headlight switch connector. See Fig. 48.
SP306	In body harness, under right rear seat. See Fig. 49.
S100	In engine harness, 10 cm from breakout to ECM. See Fig. 42.
S101 (5.3L/6.0L)	In engine harness, 4 cm from breakout to C107. See Fig. 44.
S102	In engine harness, 22 cm before breakout to MAP sensor. See Fig. 43.
S103	In forward lamp harness, 8 cm from rear washer pump motor breakout. See Fig. 40.
S104	In forward lamps harness, 6 cm before breakout to right side marker, cornering & park lamps. See Fig. 40.
S105	In engine harness, 10 cm from breakout to C107. See Fig. 44.
S106	In forward lamps harness, 5.5 cm before breakout to left side marker, cornering & park lamps. See Fig. 40.
S107	In forward lamp harness, 9 cm from breakout to left front fog lamp. See Fig. 40.
S108	In ignition coil jumper harness, 5 cm from breakout to C108.
S109	In ignition coil jumper harness, 5 cm from breakout to C109.
S111	In fuel injector harness.
S112	In engine harness, 5 cm from breakout to C109. See Fig. 41.
S113	In forward lamp harness, 19.5 cm from windshield washer fluid pump breakout. See Fig. 40.
S117	In I/P harness, 8.5 cm from C100 breakout. See Fig. 38.
S118	In ignition coil jumper harness, 5 cm from breakout to C108.
S119	In ignition coil jumper harness, 5 cm from breakout to C109.
S128	In ignition coil jumper harness, 5 cm from breakout to C108.
S129	In ignition coil jumper harness, 5 cm from breakout to C109.
S133	In automatic transmission.
S134	In automatic transmission.
S201	In I/P harness, 4 cm from breakout to inflatable restraint I/P module. See Fig. 48.
S202	I/P harness, 16.5 cm from steering column connector breakout. See Fig. 48.
S203	In I/P harness, 5 cm from breakout to rollover sensor. See Fig. 112.
S205	In chassis harness, 8 CM from breakout to electronic brake control module.
S211	In I/P harness, 16 cm from SP201 breakout. See Fig. 48.
S216	In I/P harness, 15.5 cm from recirculation actuator connector. See Fig. 47.
S217	In I/P harness, 5 cm from mode motor breakout. See Fig. 48.
S220	In I/P harness, 33.5 cm before breakout to inflatable restraint sensing & diagnostic module. See Fig. 112.
S226	In steering column harness.
S230	In I/P harness, 5 cm from SP201 breakout. See Fig. 48.
S232	In I/P harness, 10 cm from breakout to steering wheel coils.
S239	In I/P harness, above dash left lower panel, 11 cm from steering column breakout. See Fig. 48.
S250	In I/P harness, 33 cm from blower motor resistor assembly. See Fig. 48.
S271	In I/P harness, 14.5 cm from dash compartment lamp breakout. See Fig. 48.
S302	In body harness 5 cm from main harness breakout for C700. See Fig. 50.
S303	In body harness 5 cm from main harness breakout for C800. See Fig. 50.
S304	In driver seat main power harness, 5 cm from breakout memory seat module connector C1.
S305	In driver seat main power harness, 7 cm from breakout memory seat module connector C1.
S306	In chassis harness, 13 cm back from breakout to fuel pump & sender assembly. See Fig. 45.
S307	In floor console harness, 9 cm from breakout to auxiliary mode actuator. See Fig. 51.
S308	In passenger seat harness, 15 cm from breakout to C314.
S310	In body harness, 9 cm from breakout to C314. See Fig. 50.
S311	In driver's seat main power harness, 4.5 cm from lumbar switch breakout.
S312	In main headliner harness, 80 cm from C308 breakout. See Fig. 113.
S313	Driver's seat motor harness, 17 cm from seat module connector C2.
S314	Driver's seat motor harness, 24 cm from seat module connector C2.
S315 (W/ Memory)	In driver seat harness, 11.5 cm from C311.
S316	In passenger seat main power harness, 25 cm back from lumbar adjuster switch connector.
S317 (W/ Heat)	In passenger seat main power harness, 14.5 cm back from lumbar adjuster switch connector.
S317 (W/O Heat)	In passenger seat main power harness, 5 cm from breakout to lumbar adjuster switch connector.
S318	In driver's seat harness, 7 cm from breakout to body connector.
S319	In passenger seat harness, 7 cm from breakout to body connector.
S320	In I/P harness, 18 cm from automatic transmission shift lever connector breakout. See Fig. 112.
S321	In I/P harness channel between rear seat & console, 32 cm forward from C301/C304 breakout.
S322	In headliner harness, 16 cm from ISRVM breakout, toward right sun shade mirror lamp. See Fig. 113.
S327	In driver seat harness, 6.5 cm from breakout to driver cushion heated seat element.
S330	In overhead console harness.
S331	In headliner harness, 17 cm from left sun shade mirror lamp breakout, toward C305. See Fig. 113.
S332	In overhead console harness.
S341	In headliner harness, 6.5 cm from breakout to left clearance lamp.
S359	In chassis harness, 13 cm before breakout to fuel pump & sender assembly. See Fig. 46.
S362	In body harness channel on rear floor, 6 cm to left of SP306. See Fig. 49.
S374	In body harness channel on rear floor, 12 cm to left of SP306. See Fig. 49.
S390	In headliner harness, 26 cm from left front dome/reading lamp. See Fig. 113.
S401	In body harness, 7.5 cm from G401 breakout. See Fig. 49.
S402	In body harness, 7.5 cm from G402 breakout. See Fig. 50.
S408	In chassis harness, 9.5 cm from breakout to right backup lamp. See Fig. 46.
S901	In liftgate harness, 22 cm from liftgate module breakout. See Fig. 23.