GMC Envoy XL 2006 - 2006 GENERAL MOTORS Envoy, Envoy XL, Rainier & TrailBlazer

GMC Envoy XL 2006 - BUZZERS, RELAYS & TIMERS

GMC Envoy XL 2006 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Relay (4.2L)	On underhood fuse block. See Fig. 108 .
A/C Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
AIR SOL Relay	In underhood fuse block. See Fig. 108 .
Auxiliary Water Pump Relay 1	Right rear of engine compartment.
Cooling Fan Relay	On underhood fuse block.
EAP Relay (4.2L)	In underhood fuse block. See Fig. 108 .
EAP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
Electronic Adjustable Pedals (EAP) Relay	Left side of dash, on pedal assembly. See Fig. 61 .
FAN Relay (4.2L)	In underhood fuse block. See Fig. 108 .
FAN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
FOG LP Relay (4.2L)	On underhood fuse block. See Fig. 108 .
FOG LP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
F/PMP Relay (4.2L)	In underhood fuse block. See Fig. 108 .
F/PMP Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
Fuel Pump Relay	On underhood fuse block.
HDLP - HI Relay (4.2L)	In underhood fuse block. See Fig. 108 .
HDLP - HI Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
HDLP WASH Relay (4.2L)	On underhood fuse block. See Fig. 108 .
HDLP WASH Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
HDM Relay (4.2L)	In underhood fuse block. See Fig. 108 .
HDM Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
Headlamp Driver Module	On underhood fuse block.
Headlamp Hi-Beam Relay	On underhood fuse block.
HORN Relay (4.2L)	On underhood fuse block. See Fig. 108 .
HORN Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
LOCK Relay (Long Wheel Base)	In rear fuse block. See Fig. 111 .
LOCK Relay (Short Wheel Base)	On rear fuse block. See Fig. 110 .
LOCK Relay (XUV)	In rear fuse block. See Fig. 112 .
MIDGATE Relay (XUV)	In rear fuse block. See Fig. 112 .
PARK LP Relay (Long Wheel Base)	In rear fuse block. See Fig. 111 .
PARK LP Relay (Short Wheel Base)	On rear fuse block. See Fig. 110 .
PARK LP Relay (XUV)	In rear fuse block. See Fig. 112 .
RAP Relay	In rear fuse block. See Fig. 111 .
REAR WASH Relay (4.2L)	On underhood fuse block. See Fig. 108 .
REAR WASH Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
RR FOG LP Relay (Long Wheel Base)	In rear fuse block. See Fig. 111 .
RR FOG Relay (Short Wheel Base)	On rear fuse block. See Fig. 110 .
RT DOORS Relay (XUV)	In rear fuse block. See Fig. 112 .
Secondary Air Injection (AIR) Pump Relay	Left front of chassis. See Fig. 133 .
Starter Relay (4.2L)	On underhood fuse block. See Fig. 108 .
Starter Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .
Unlock Relay (Long Wheel Base)	In rear fuse block. See Fig. 111 .
UNLOCK Relay (Short Wheel Base)	On rear fuse block. See Fig. 110 .
UNLOCK Relay (XUV)	In rear fuse block. See Fig. 112 .
W/S WASH Relay (4.2L)	On underhood fuse block. See Fig. 108 .
W/S WASH Relay (5.3L/6.0L)	In underhood fuse block. See Fig. 109 .

GMC Envoy XL 2006 - CIRCUIT PROTECTION DEVICES

GMC Envoy XL 2006 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Blower Motor Resistor Assembly	Lower right side of dash. See Fig. 20 .
In-Line 30A Fuse	Right rear of vehicle.
LT DOORS Circuit Breaker (Long Wheel Base)	In rear fuse block. See Fig. 111 .
LT DOORS Circuit Breaker (Short Wheel Base)	On rear fuse block. See Fig. 110 .
LT DOORS Circuit Breaker (XUV)	In rear fuse block. See Fig. 112 .
Rear Fuse Block	Below left rear seat. See Fig. 76 .
RT DOORS Circuit Breaker (Long Wheel Base)	In rear fuse block. See Fig. 111 .
RT DOORS Circuit Breaker (Short Wheel Base)	In rear fuse block. See Fig. 110 .
RT DOORS Circuit Breaker (XUV)	In rear fuse block. See Fig. 112 .
Seats Circuit Breaker (Long Wheel Base)	In rear fuse block. See Fig. 111 .
Seats Circuit Breaker (Short Wheel Base)	On rear fuse block. See Fig. 110 .
Seats Circuit Breaker (XUV)	In rear fuse block. See Fig. 112 .
Underhood Fuse Block	On left side of engine compartment. See Fig. 1 .

GMC Envoy XL 2006 - CONTROL UNITS

GMC Envoy XL 2006 CONTROL UNITS LOCATION

Component	Location
Antenna Amplifier Module (Sedan)	Rear center of roof, under headliner.
Auxiliary Blower Motor Control Processor	In rear HVAC module, behind right rear interior panel. See Fig. 22 .
Blower Motor Control Processor	Lower right side of dash. See Fig. 28 .
Blower Motor Control Processor-Auxiliary	Right rear of luggage compartment. See Fig. 30 .
Body Control Module (BCM)	Beneath left rear seat, on rear fuse block. See Fig. 76 .
Body Control Module Connectors	Beneath left rear seat, on rear fuse block. See Fig. 76 .
Driver Door Module (DDM)	Below driver's door switch panel. See Fig. 83 .
Driver Door Module (DDM) Connector	In left front door. See Fig. 85 .
Electronic Brake Control Module (EBCM)	On inner left frame rail, beside transmission. See Fig. 39 .
Electronic Brake Control Module (EBCM) Connector	On inner left frame rail, beside transmission. See Fig. 39 .
Engine Control Module (ECM) (5.3 L)	Near lower left front of engine.
Front Passenger Door Module (FPDM)	Below front passenger door switch panel. See Fig. 82 .
Headlamp Driver Module	On underhood fuse block.
HVAC Control Module	Center of dash. See Fig. 19 .
HVAC Control Module-Auxiliary	Under lower console. See Fig. 21 .
Ignition Coil/Module (6)	On top of valve cover, above respective cylinder.
Inflatable Restraint Front Passenger Presence System (PPS) Module	Under passenger seat.
Inflatable Restraint I/P Module	Right side of dash. See Fig. 55 .
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. 59 .
Inflatable Restraint Side Impact Module-Left	Left side of driver's seat. See Fig. 60 .
Inflatable Restraint Side Impact Module-Right	In right front seat back. See Fig. 57 .
Inflatable Restraint Side Impact Sensing Module (Left)	In left front seat back.
Inflatable Restraint Steering Wheel Module	In steering wheel. See Fig. 56 .
Liftgate Module (LGM)	In center of liftgate. See Fig. 78 .
Memory Seat Module	Below left front seat. See Fig. 94 .
Powertrain Control Module (PCM) (4.2L)	On upper left side of engine. See Fig. 126 .
Powertrain Control Module (PCM) (5.3L/6.0L)	Near lower left front of engine.
Rear Window Wiper Module	Mounted on center lower liftgate back glass.
RSA/HVAC Control Module	Below center console. See Fig. 21 .
Sunroof Module	At rear of sunroof assembly. See Fig. 92 .
Transfer Case Shift Control Module	Behind lower left side of dash.
Turn Signal/Hazard Flasher Module	Behind lower left side of dash. See Fig. 89 .
Vehicle Communication Interface Module (VCIM) (Long Wheelbase)	Right rear floor pan. See Fig. 65 .
Vehicle Communication Interface Module (VCIM) (Short Wheelbase)	Under right rear seat. See Fig. 64 .

GMC Envoy XL 2006 - MOTORS

GMC Envoy XL 2006 MOTORS LOCATION

Component	Location
Air Suspension Compressor Assembly (Except XL)	Behind right rear wheelwell, on frame rail. See Fig. 32 .
Air Suspension Compressor Assembly (XL)	On left rear frame rail, near spare tire. See Fig. 33 .
Air Temperature Actuator-Auxiliary (Long Wheelbase)	Right rear of vehicle.
Air Temperature Actuator (Left)	Behind left center of dash. See Fig. 17 .
Air Temperature Actuator (Right)	Behind right center of dash. See Fig. 17 .
Blower Motor	Below right side of dash. See Fig. 20 .
Blower Motor (Auxiliary) (Except XL)	Below center of dash.
Blower Motor (Auxiliary) (XL)	On right side of cargo area, behind trim panel.
Console Mode Actuator	Under lower console. See Fig. 21 .
Defrost Actuator	Behind upper left center of dash. See Fig. 17 .
Engine Cooling Fan	Front of engine (4.2L). See Fig. 40 .
Forward-Rearward Motor	Under front passenger's seat cushion. See Fig. 95 .
Front Axle Actuator	On inner flange of right front axle. See Fig. 35 .
Fuel Pump & Sender Assembly (Long Wheel Base)	Top of fuel tank. See Fig. 125 .
Fuel Pump & Sender Assembly (Short Wheel Base)	Inside fuel tank. See Fig. 124 .
Headlamp Leveling Actuator (Left)	Behind left headlight.
Headlamp Leveling Actuator (Right)	Behind right headlight.
Headlamp Washer Fluid Pump	Right front of engine compartment. See Fig. 100 .
Lumbar Actuator-Horizontal	In passenger's seat. See Fig. 96 .
Lumbar Actuator-Vertical	In passenger's seat. See Fig. 96 .
Mode Actuator	Behind upper left center of dash. See Fig. 17 .
Mode Actuator (Auxiliary)	Under center floor console. See Fig. 157 .
Power Door Lock-LR	In left rear door. See Fig. 84 .
Power Window Regulator-LR	In left rear door. See Fig. 84 .
Quarter Glass Actuator-Left	At left quarter glass. See Fig. 77 .
Quarter Glass Actuator-Right	At right quarter glass. See Fig. 77 .
Rear Blower Motor	Under center of dash. See Fig. 134 .
Rear Window Washer Fluid Pump	On washer fluid reservoir. See Fig. 100 .
Rear Window Wiper Motor (Except XUV)	Inside tailgate. See Fig. 78 .
Rear Window Wiper Motor (XUV)	At center of endgate. See Fig. 79 .
Recirculation Actuator	Behind upper right side of dash. See Fig. 18 .
Recline Motor	Under front passenger's seat cushion. See Fig. 95 .
Secondary Air Injection (AIR) Pump	Left front of chassis. See Fig. 133 .
Starter (4.2L)	Left front of engine (4.2L). See Fig. 43 .
Starter (5.3L/6.0L)	Right side of engine. See Fig. 45 .
Sun Roof Motor	Above headliner, at rear of sun roof assembly.
Throttle Actuator Control (TAC) Motor (4.2L)	On throttle body.
Throttle Actuator Control (TAC) Motor (5.3L/6.0L)	On throttle body.
Transfer Case Motor Encoder Connector	On top of transfer case. See Fig. 36 .
Vertical Motor, Front	Under front passenger's seat cushion. See Fig. 95 .
Vertical Motor, Rear	Under front passenger's seat cushion. See Fig. 95 .
Windshield Washer Fluid Pump	On washer fluid reservoir. See Fig. 100 .
Windshield Wiper Motor	On upper center of firewall. See Fig. 101 .

GMC Envoy XL 2006 - SENDING UNITS & SENSORS

GMC Envoy XL 2006 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position (APP) Sensor	Above accelerator pedal, on bracket. See Fig. 61 .
Air Conditioning Refrigerant Pressure Sensor	On high pressure line, near A/C compressor. See Fig. 15 .
Air Suspension Sensor-LR (Long Wheelbase)	On frame rail, near left rear suspension arm. See Fig. 33 .
Air Suspension Sensor-LR (Short Wheelbase)	On frame rail, near left rear suspension arm. See Fig. 32 .
Air Suspension Sensor-RR (Long Wheelbase)	On frame rail, near right rear suspension arm. See Fig. 33 .
Air Suspension Sensor-RR (Short Wheelbase)	On frame rail, near right rear suspension arm. See Fig. 32 .
Ambient Air Temperature Sensor	On left center of radiator support. See Fig. 23 .
Ambient Light Sensor	On top center of dash.
Ambient Light/Sun Load Sensor	On top center of dash, near base of windshield. See Fig. 27 .
Automatic Transmission Input Shaft Speed Sensor (AT ISS) Sensor	In automatic transmission.
Brake Booster Vacuum Sensor (DOD)	On power brake booster. See Fig. 122 .
Camshaft Position (CMP) Sensor (4.2L)	On right front of cylinder head. See Fig. 128 .
Camshaft Position (CMP) Sensor (5.3L/6.0L)	At bottom front of engine. See Fig. 113 .
Crankshaft Position (CKP) Sensor (4.2L)	On left rear of engine block, below starter. See Fig. 127 .
Crankshaft Position (CKP) Sensor (5.3L/6.0L)	At right rear of engine, adjacent to starter. See Fig. 118 .
Electronic Frontal Sensor (EFS) - Left	On left side of frame, at front of vehicle.
Electronic Frontal Sensor (EFS) - Right	On right side of frame, at front of vehicle.
Engine Coolant Temperature (ECT) Sensor (4.2L)	Upper left side of engine. See Fig. 138 .
Engine Coolant Temperature (ECT) Sensor (5.3L/6.0L)	On left front of engine block, near generator.
Engine Oil Pressure (EOP) Sensor Connector (4.2L)	Lower right front of block. See Fig. 87 .
Engine Oil Pressure (EOP) Sensor (5.3L/6.0L)	At rear of engine. See Fig. 119 .
Fuel Pump & Sender Assembly	Inside fuel tank. See Fig. 146 .
Fuel Tank Pressure (FTP) Sensor (Long Wheel Base)	Top of fuel tank. See Fig. 125 .
Fuel Tank Pressure (FTP) Sensor (Short Wheel Base)	At top left rear of fuel tank. See Fig. 133 .
Heated Oxygen Sensor Bank No. 1 Sensor No. 1 (5.3L/6.0L)	In left bank exhaust pipe, ahead of catalytic converter. See Fig. 119 .
Heated Oxygen Sensor Bank No. 1 Sensor No. 2 (5.3L/6.0L)	In left bank of exhaust pipe, behind catalytic converter. See Fig. 121 .
Heated Oxygen Sensor Bank No. 2 Sensor No. 1 (5.3L/6.0L)	In right bank OF exhaust pipe, ahead of catalytic converter. See Fig. 119 .
Heated Oxygen Sensor Bank No. 2 Sensor No. 2 (5.3L/6.0L)	In right bank of exhaust pipe, behind catalytic converter. See Fig. 120 .
Heated Oxygen Sensor (HO2S) No. 1 (4.2L)	On exhaust manifold, on right side of engine. See Fig. 129 .
Heated Oxygen Sensor (HO2S) No. 2 (4.2L)	Downstream of catalytic converter, on exhaust pipe. See Fig. 132 .
Inflatable Restraint Electronic Frontal Sensor	Front of vehicle frame. See Fig. 54 .
Inflatable Restraint Front End Discriminating Sensor-Left	At left rear of front frame crossmember. See Fig. 60 .
Inflatable Restraint Front End Discriminating Sensor-Right	At right rear of front frame crossmember. See Fig. 60 .
Inflatable Restraint Front Passenger Presence System (PPS) Sensor	Under passenger seat.
Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor	Integral to passenger seat bet retractor.
Inflatable Restraint Seat Position Sensor (SPS) - Left	On left front outboard seat track.
Inflatable Restraint Seat Position Sensor (SPS) - Right	On right front outboard seat track.
Inflatable Restraint Side Impact Sensor (SIS)-Left	Under left front door trim, near lower rear of door frame. See Fig. 60 .
Inflatable Restraint Side Impact Sensor (SIS)-Right	Right front passenger's door. See Fig. 58 .
Input Speed Sensor (ISS)	Inside automatic transmission.
Inside Air Temperature Sensor	Top of left "B" pillar. See Fig. 29 .
Inside Air Temperature Sensor Assembly	At top of left "B" pillar, behind trim.
Intake Air Temperature (IAT) Sensor	In air intake duct, on top right of engine. See Fig. 130 .
Knock Sensor (KS) 1 - Left	Lower left side of engine. See Fig. 115 .
Knock Sensor (KS) 2 - Right	Right side of engine block. See Fig. 118 .
Knock Sensor No. 1 (4.2L)	On lower left front of engine block. See Fig. 127 .
Knock Sensor No. 2 (4.2L)	On lower left rear of engine block. See Fig. 127 .
Lower Left Air Temperature Sensor	Behind lower left center of dash, on air duct. See Fig. 25 .
Lower Right Air Temperature Sensor	Behind lower right side of dash, on air duct. See Fig. 24 .
Manifold Absolute Pressure (MAP) Sensor (4.2L)	On upper left side of engine. See Fig. 130 .
Manifold Absolute Pressure (MAP) Sensor (5.3L/6.0L)	On top of engine.
Mass Airfow/Intake Air Temperature Sensor	In air intake duct. See Fig. 117 .
Outside Moisture Sensor	Top center of front window. See Fig. 98 .
Passlock Sensor	In ignition lock cylinder case. See Fig. 75 .
Propshaft Speed Sensor (VSS)-LF	On left front of transfer case. See Fig. 34 .
Propshaft Speed Sensor (VSS)-RR	On right rear of transfer case. See Fig. 34 .
Rain Sensor	On upper center of windshield.
Upper Air Temperature Sensors	Center of dash. See Fig. 26 .
Upper Left Air Temperature Sensor	Behind upper left center of dash.
Upper Right Air Temperature Sensor	Behind upper right center of dash.
VSS Sensor	On left rear of transfer case. See Fig. 50 .
Wheel Speed Sensor-LF	On left front spindle/hub assembly. See Fig. 38 .
Wheel Speed Sensor-RF	On right front spindle/hub assembly. See Fig. 38 .
Yaw Rate & Lateral Acceleration Sensor	Below front passenger's seat.

GMC Envoy XL 2006 - SOLENOIDS & SOLENOID VALVES

GMC Envoy XL 2006 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor Clutch Connector	On A/C compressor. See Fig. 14 .
Automatic Transmission Shift Lock Actuator	Center of floor pan. See Fig. 46 .
Camshaft Actuator Solenoid Assembly	On right front of cylinder head. See Fig. 128 .
Evaporative Emission (EVAP) Canister Purge Solenoid (4.2L)	Lower Left Side Of Engine. See Fig. 127 .
Evaporative Emission (EVAP) Canister Purge Solenoid (5.3L/6.0L)	On left side of engine block. See Fig. 114 .
Evaporative Emission (EVAP) Canister Vent Solenoid (Short Wheel Base)	At rear of fuel tank. See Fig. 124 .
Evaporative Emissions (EVAP) Canister Purge Solenoid Connector	On throttle body. See Fig. 44 .
Evaporative Emissions (EVAP) Canister Vent Solenoid (Long Wheel Base)	Top of fuel tank. See Fig. 125 .
Fuel Injector 1 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 1 (5.3L/6.0L)	Upper left side of engine. See Fig. 114 .
Fuel Injector 2 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 2 (5.3L/6.0L)	Upper right side of engine. See Fig. 116 .
Fuel Injector 3 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 3 (5.3L/6.0L)	Upper left side of engine. See Fig. 114 .
Fuel Injector 4 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 4 (5.3L/6.0L)	Upper right side of engine. See Fig. 116 .
Fuel Injector 5 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 5 (5.3L/6.0L)	Upper left side of engine. See Fig. 114 .
Fuel Injector 6 (4.2L)	Top of engine. See Fig. 131 .
Fuel Injector 6 (5.3L/6.0L)	Upper right side of engine. See Fig. 116 .
Fuel Injector 7 (5.3L/6.0L)	Upper left side of engine. See Fig. 114 .
Fuel Injector 8 (5.3L/6.0L)	Upper right side of engine. See Fig. 116 .
Ignition Lock Cylinder Control Actuator	In steering column. See Fig. 6 .
Ignition Lock Cylinder Control Solenoid	Inside steering column. See Fig. 74 .
Manifold Absolute Pressure (MAP) Sensor	Upper left side of engine. See Fig. 114 .
Pressure Control (PC) Solenoid Valve	Inside automatic transmission assembly. See Fig. 47 .
Secondary Air Injection (AIR) Solenoid	Upper right side of engine.
Speed Sensor	Inside automatic transmission. See Fig. 52 .
Starter Solenoid (5.3L/6.0L)	Right side of engine. See Fig. 45 .
TCC PWM Solenoid Valve	Inside automatic transmission valve body. See Fig. 51 .
Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve	Inside automatic transmission assembly. See Fig. 47 .
Torque Converter Clutch (TCC) Solenoid Valve	Inside transmission assembly. See Fig. 47 .
1-2 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 47 .
2-3 Shift Solenoid (SS) Valve	Inside automatic transmission assembly. See Fig. 47 .
3-2 Shift Solenoid (SS) Valve Assembly	Inside automatic transmission assembly. See Fig. 47 .

GMC Envoy XL 2006 - SWITCHES

GMC Envoy XL 2006 SWITCHES LOCATION

Component	Location
A/C Low Pressure Switch	At right rear of engine compartment, on accumulator. See Fig. 16 .
Air Suspension Inflator Switch (Except XL)	On right side of cargo area, on trim panel. See Fig. 32 .
Air Suspension Inflator Switch (XL)	On left side of cargo area, on trim panel. See Fig. 33 .
Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch	Inside automatic transmission assembly. See Fig. 47 .
Back-Up Lamp Switch	Integral with park/neutral position switch. See Fig. 88 .
Brake Fluid Level Switch	On brake master cylinder fluid reservoir.
Door Jamb Switch, Miniwedge-LR	In left rear door. See Fig. 90 .
Hood Ajar Switch	On top left of radiator support.
Ignition Key Alarm Switch	In steering column. See Fig. 74 .
Ignition Switch	In steering column. See Fig. 6 .
Liftgate Ajar Switch	In liftgate. See Fig. 78 .
Oil Pressure Switch (4.2L)	On right side of engine block.
Oil Pressure Switch (5.3L/6.0L)	At top rear of engine block, near transmission.
Park Brake Switch	On parking brake assembly. See Fig. 37 .
Park/Neutral Position Switch	On lower left side of transmission.
Park Switch	On shift lever assembly.
PNP Switch	On left side of transmission, above fluid pan. See Fig. 48 .
Seat Belt Switch (Left Front)	In left front seat belt buckle. See Fig. 53 .
Seat Belt Switch (Right Front)	In right front belt buckle assembly.
Stop Lamp Switch	On brake pedal assembly. See Fig. 123 .
TCC/Brake Switch	Above brake pedal, on bracket.
Windshield Washer Fluid Level Switch	In windshield washer fluid reservoir. See Fig. 100 .

GMC Envoy XL 2006 - MISCELLANEOUS

GMC Envoy XL 2006 MISCELLANEOUS LOCATION

Component	Location
Audio Amplifier (Except XL)	On right side of cargo area, behind trim panel. See Fig. 70 .
Audio Amplifier (XL)	On left side of cargo area, behind trim panel. See Fig. 71 .
Auxiliary Power Outlet-Rear	Left rear body side lower trim panel. See Fig. 13 .
Battery	Left front of engine compartment. See Fig. 41 .
Blower Motor Resistor Assembly	Below right side of dash, near blower motor.
Cellular Antenna	Front roof panel. See Fig. 73 .
Cellular Microphone	In overhead console. See Fig. 62 .
Cellular & Navigation Antenna	Front of roof panel. See Fig. 63 .
Data Link Connector	On bottom left side of dash. See Fig. 80 .
Dual Horns	Left front of engine compartment. See Fig. 86 .
Generator Connector (5.3L/6.0L)	Top left of engine. See Fig. 44 .
Generator (4.2L)	Left front of engine (4.2L). See Fig. 42 .
Generator (5.3L/6.0L)	Top front of engine. See Fig. 44 .
Global Positioning System (GPS) Antenna	Front center of roof. See Fig. 72 .
Ignition Coil 1 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 1 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 114 .
Ignition Coil 2 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 2 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 116 .
Ignition Coil 3 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 3 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 114 .
Ignition Coil 4 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 4 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 116 .
Ignition Coil 5 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 5 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 114 .
Ignition Coil 6 (4.2L)	Top of engine. See Fig. 131 .
Ignition Coil 6 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 116 .
Ignition Coil 7 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 114 .
Ignition Coil 8 (5.3L/6.0L)	On top of valve cover, above respective cylinder. See Fig. 116 .
Noise Compensation Microphone (UQA W/Class 2 Amp)	In overhead console. See Fig. 62 .
Noise Reduction Microphone	In overhead console. See Fig. 69 .
Radio Antenna	At rear of radio. See Fig. 68 .
Radio Antenna Cable	Right rear side of engine compartment. See Fig. 66 .
Rear Blower Resistor	Attached to rear blower motor. See Fig. 134 .
Rear Window Defogger Grid	On rear window. See Fig. 99 .
Seat Belt Pretensioner - Left	Under left front of seat, part of retractor.
Seat Belt Pretensioner - Right	Under right front of seat, part of retractor.
Seat Cushion Heater Element	Under seat cover. See Fig. 97 .
SIR Coil	In steering column assembly. See Fig. 31 .
Star Connector No. 1	On lower left side of dash.
Star Connector No. 2	In body harness, below right rear seat.
Theft Deterrent Alarm	Attached to rear frame, above spare tire.
Trailer Connector	Rear of vehicle frame. See Fig. 91 .
Travel Note Recorder	Inside roof console.
Valve Lifter Oil Manifold (VLOM) Assembly (5.3L/6.0L)	At top rear of engine. See Fig. 119 .

GMC Envoy XL 2006 - CONNECTORS

GMC Envoy XL 2006 CONNECTORS LOCATION

Component	Location
C100 (Black, 10 Pin)	I/P harness to engine harness, in underhood compartment, to left of engine. See Fig. 135 .
C101 (Black, 38 Pin)	I/P harness to chassis harness, in underhood compartment, to right of underhood fuse block. See Fig. 135 .
C102 (Black/Gray, 4 Pin)	Near left headlight assembly. See Fig. 136 .
C103 (Black, 4 Pin)	Near right headlight assembly. See Fig. 137 .
C104 (Black, 8 Pin)	At rear of engine, near coil No. 6.
C105 (Long Wheel Base) (Black, 12 Pin)	Forward lamp harness to I/P harness, underhood compartment, near underhood fuse block. See Fig. 135 .
C105 (Short Wheel Base) (Black, 10 Pin)	Forward lamp harness to I/P harness, underhood compartment, near underhood fuse block. See Fig. 135 .
C106 (Black, 2 Pin)	I/P harness to chassis harness.
C107 (Black, 38 Pin)	Left rear of engine compartment. See Fig. 135 .
C108 (Black, 8 Pin)	In coils harness to engine harness, on top of right bank valve cover. See Fig. 116 .
C109 (Black, 8 Pin)	In coils harness to engine harness, on top of left bank valve cover. See Fig. 114 .
C110 (5.3L/6.0L) (3 Pin)	Left front of engine block, below camshaft position sensor. See Fig. 113 .
C111 (Black, 6 Pin)	I/P harness to body harness.
C118	On upper left of fan shroud. See Fig. 40 .
C175 (20 Pin)	Engine harness to automatic transmission harness, on right side of transmission. See Fig. 49 .
C201 (Black/Gray, 48 Pin)	Steering column harness to I/P harness, lower part of steering column. See Fig. 105 .
C202 (Natural, 4 Pin)	I/P harness to headliner harness, lower right side of dash.
C203 (Yellow, 4 Pin)	I/P harness to body connector, lower right side of dash. See Fig. 104 .
C204 (Black, 4 Pin)	At rear blower motor. See Fig. 134 .
C225	On brake pedal assembly. See Fig. 61 .
C275 (4 Pin)	At steering column.
C300 (Black, 8 Pin)	Right of floor shifter.
C301 (Black, 8 Pin)	I/P harness to body harness, under carpet, rear floor area.
C304 (Black, 16 Pin)	I/P harness to body harness, under carpet, rear floor area. See Fig. 155 .
C305 (Black, 16 Pin)	Overhead console harness to headliner harness, inside upper console. See Fig. 67 .
C306 (Black, 6 Pin)	Body harness to headliner harness, under carpet, at rear floor area. See Fig. 150 .
C307 (Gray, 18 Pin)	Beneath lower console. See Fig. 21 .
C308 (Black, 6 Pin)	Headliner harness to sun roof harness, above left rear door. See Fig. 93 .
C309 (Black, 10 Pin)	Console harness to body harness, under lower rear console, near C307. See Fig. 21 .
C310 (Black, 2 Pin)	Chassis harness to engine harness, near transfer case. See Fig. 34 .
C311 (Black, 10 Pin)	Body harness to seat harness, lower front of driver's seat. See Fig. 106 .
C312 (Black, 16 Pin)	Seat harness to seat back harness, under driver's seat. See Fig. 106 .
C313 (Black, 6 Pin)	Seat harness to seat motor harness, under driver's seat. See Fig. 106 .
C314 (Black, 10 Pin)	Body harness to seat harness, lower front of passenger seat. See Fig. 106 .
C315 (Black, 16 Pin)	Seat harness to seat back harness, under passenger seat. See Fig. 106 .
C316 (Gray, 8 Pin)	Under passenger seat, main seat harness to seat motors. See Fig. 106 .
C317 (2 Pin)	Under driver's seat pretensioner.
C318 (2 Pin)	Under passenger's seat pretensioner.
C401 (12 Pin)	Body harness to rear HVAC module harness, behind right rear body side panel. See Fig. 107 .
C402 (6 Pin)	Right rear of passenger compartment, on center of right "D" pillar.
C405 (10 Pin)	At left rear frame rail.
C500 (Black, 12 Pin)	Body harness to left front door harness, at midpoint of leading edge of door. See Fig. 103 .
C600 (Black, 12 Pin)	Body harness to right front door harness, at midpoint of leading edge of door. See Fig. 103 .
C700 (Black/Natural, 17 Pin)	Body harness to left rear door harness, at midpoint of leading edge of door. See Fig. 84 .
C800 (Black/Natural, 17 Pin)	Body harness to right rear door harness, at midpoint of leading edge of door. See Fig. 102 .
C900 (Black, 6 Pin)	Body harness to liftgate harness, at top of liftgate. See Fig. 78 .
C901 (Gray, 2 Pin)	Liftgate harness to license lamp harness, inside liftgate. See Fig. 78 .
C904 (Except XUV)	In liftgate. See Fig. 78 .
C905 (Except XUV)	In liftgate. See Fig. 78 .

GMC Envoy XL 2006 - GROUNDS

GMC Envoy XL 2006 GROUNDS LOCATION

Component	Location
G101	Left side of engine. See Fig. 139 .
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. 137 .
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.
G107	On lower left side of engine. See Fig. 3 .
G108	On lower left side of engine. See Fig. 4 .
G109	On lower left side of engine. See Fig. 3 .
G110	On lower left side of engine. See Fig. 4 .
G201	Ground splice pack near, right front of lower console.
G301	Floor in tunnel/console area.
G302	On lower left "B" pillar. See Fig. 7 .
G303	On lower right "B" pillar.
G304	On outside of left frame rail, near electronic brake control module. See Fig. 8 .
G305	On outside of left frame rail, near fuel tank. See Fig. 9 .
G306	On body panel, rear of left rear door.
G401	On lower left "D" pillar. See Fig. 10 .
G402	On lower right "D" pillar. See Fig. 10 .
G403 (Long Wheelbase, Body Type VIN 6)	On left side of rear frame crossmember. See Fig. 12 .
G403 (Short Wheelbase, Body Type VIN 3)	On left side of rear frame crossmember. See Fig. 11 .

GMC Envoy XL 2006 - SPLICES

GMC Envoy XL 2006 SPLICES LOCATION

Component	Location
SP201	At lower right front of lower console. See Fig. 5 .
SP205	Behind left of dash, near headlight switch connector. See Fig. 80 .
SP306	In body harness, under right rear seat. See Fig. 81 .
S100	In engine harness, 10 cm from breakout to ECM. See Fig. 141 .
S101	In engine harness, 4 cm from breakout to C107. See Fig. 143 .
S102	In engine harness, 16.5 cm before breakout to MAP sensor. See Fig. 142 .
S103	Forward lamp harness, 8 cm from rear washer pump motor breakout. See Fig. 137 .
S104	In forward lamps harness, 6 cm before breakout to right side marker, cornering & park lamps. See Fig. 137 .
S105	In engine harness, 10 cm from breakout to C107. See Fig. 143 .
S106	In forward lamps harness, 5.5 cm before breakout to left side marker, cornering & park lamps. See Fig. 137 .
S107	Forward lamp harness, 9 cm from left turn signal breakout. See Fig. 137 .
S108	In ignition coil jumper harness, 5 cm from breakout to C108.
S108	In ignition coil jumper harness, 5 cm from breakout to C108.
S109	In ignition coil jumper harness, 5 cm from breakout to C109.
S110	In engine harness, 32.5 cm from G110. See Fig. 139 .
S111	In fuel injector harness.
S112	In engine harness, 5 cm from breakout to C109. See Fig. 140 .
S113	Forward lamp harness, 19.5 cm from windshield washer pump breakout. See Fig. 137 .
S117	I/P harness, 8.5 cm from C100 breakout. See Fig. 135 .
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. 149 .
S202	I/P harness, 16.5 cm from steering column connector breakout. See Fig. 149 .
S203	In I/P harness, 5 cm from breakout to rollover sensor. See Fig. 151 .
S205	In chassis harness, 8 cm from breakout to electronic brake control module.
S205	In chassis harness, 8 CM from breakout to electronic brake control module.
S211	I/P harness, 16 cm from SP201 breakout. See Fig. 149 .
S216	I/P harness, 15.5 cm from recirculation actuator connector. See Fig. 148 .
S217	I/P harness, 5 cm from mode motor breakout. See Fig. 149 .
S220	In I/P harness, 33.5 cm before breakout to inflatable restraint sensing & diagnostic module. See Fig. 150 .
S226	Ground circuit splice in steering column.
S230	I/P harness, 5 cm from SP201 breakout. See Fig. 149 .
S232	I/P harness, 10 cm from steering column breakout.
S239	I/P harness, above dash left lower panel, 11 cm from steering column breakout. See Fig. 149 .
S250	In I/P harness, 33 cm from blower motor resistor assembly. See Fig. 149 .
S271	I/P harness, 14.5 cm from dash compartment lamp breakout. See Fig. 149 .
S301	In overhead console harness.
S302	5 cm from main harness breakout for C700. See Fig. 153 .
S303	5 cm from main harness breakout for C800. See Fig. 153 .
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 (Long Wheel Base)	In chassis harness, 18 cm back from breakout to fuel pump & sender assembly. See Fig. 147 .
S306 (Short Wheel Base)	In chassis harness, 13 cm back from breakout to fuel pump & sender assembly. See Fig. 144 .
S307 (Long Wheel Base)	In console harness, 4.5 cm from breakout to C309. See Fig. 157 .
S307 (Short Wheel Base)	In console harness, 9 cm from breakout to auxiliary mode actuator. See Fig. 157 .
S308	In passenger seat harness, 15 cm from breakout to C314.
S310	In body harness, 9 cm from breakout to C314. See Fig. 153 .
S311	Under driver's seat, 4.5 cm from lumbar switch breakout.
S312	In main headliner harness, 80 cm from C308 breakout. See Fig. 150 .
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	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)	Under passenger seat, 5 cm from lumbar switch breakout.
S318	Driver's seat main harness, 7 cm from body connector breakout.
S319	Passenger seat main harness, 7 cm from body connector breakout.
S320	I/P harness, 18 cm from automatic transmission shift lever connector breakout. See Fig. 151 .
S321	In I/P harness channel between rear seat & console, 32 cm forward from C301/C304 breakout.
S322	Headliner harness, 16 cm from ISRVM breakout, toward right sun shade mirror lamp. See Fig. 156 .
S323	In console harness, 14 cm from breakout to auxiliary HVAC control module.
S324	In lower console harness, between auxiliary HVAC module & C309.
S325	In lower console harness, between auxiliary HVAC module & C309.
S326	In console harness, 5 cm from breakout to auxiliary console mode actuator.
S327	In driver seat harness, 6.5 cm from breakout to driver cushion heated seat element.
S330	Overhead console harness.
S331	Headliner harness, 17 cm from left sun shade mirror lamp breakout, toward C305. See Fig. 156 .
S332	Overhead console harness.
S333	In headliner harness, 13 cm from cargo lamp breakout.
S341	In headliner harness, 6.5 cm from breakout to left clearance lamp.
S350	In headliner harness, 3.5 cm from left quarterglass breakout.
S351	In overhead console harness.
S359	In chassis harness, 13 cm before breakout to fuel pump & sender assembly. See Fig. 145 .
S362	In body harness channel on rear floor, 6 cm to left of SP306. See Fig. 152 .
S374	In body harness channel on rear floor, 12 cm to left of SP306. See Fig. 152 .
S390	In headliner harness, 26 cm from left front dome/reading lamp. See Fig. 156 .
S391	In headliner harness, 6.5 cm from left quarterglass breakout.
S401 (Long Wheelbase)	Body harness, 10 cm from G401 breakout. See Fig. 155 .
S401 (Short Wheelbase)	Body harness, 7.5 cm from G401 breakout. See Fig. 152 .
S402 (Long Wheel Base)	In body harness, 13 cm from G402. See Fig. 154 .
S402 (Short Wheel Base)	In body harness, 7.5 cm from G402 breakout. See Fig. 153 .
S408	In chassis harness, 9.5 cm from breakout to right backup lamp. See Fig. 145 .
S900	Main liftgate harness, 50 cm from liftgate module breakout.
S901	In liftgate harness, 22 cm from liftgate module breakout. See Fig. 78 .