Chevrolet TrailBlazer (2002-2009) - Service Manual / Repair Manual - Wiring Diagrams

CHEVROLET TRAILBLAZER  (2002-2009) - WORKSHOP, SERVICE, REPAIR MANUAL - WIRING DIAGRAMS

- English Service Manual and Wiring Diagrams, to car Chevrolet TrailBlazer  (2002-2009).
 

CONTENTS:

SERVICE MANUAL

01 General Information
- 01 Maintenance & Lubrication
- 02 Service Reminder Indicators

02 Engine
- 01 Engine Mechanical (+Electrical) - 5.3L
- 02 Engine Mechanical - 4.2L
- 03 Engine Controls & Fuel - 4.2L
- 04 Engine Cooling
- 05 Engine Electrical
- 06 Engine Exhaust
- 07 Cruise Control

03 Transmission
- 01 Automatic Transmission - 4L60-E, 4L65-E, 4L70-E
- 02 Shift Lock Control

04 Suspension
- 01 Air Suspension
- 02 Front Suspension
- 03 Rear Suspension
- 04 Tire Pressure Monitoring

05 Driveline & Axle
- 01 Front Drive Axle
- 02 Rear Drive Axle
- 03 Wheel Drive Shafts
- 04 Propeller Shaft

06 Brakes
- 01 Antilock Brake System
- 02 Hydraulic Brakes
- 03 Park Brake
- 04 Disc Brakes

07 Steering
- 01 Power Steering
- 02 Steering Wheel & Column

08 Accessories & Equipment
- 01 Cellular, Entertainment & Navigation
- 02 Exterior Trim
- 03 Frame & Underbody
- 04 Displays & Gages
- 05 Horns
- 06 Instrument Panel & Console Trim
- 07 Interior Trim & Paneling
- 08 Lighting
- 09 Mirrors
- 10 Sunroof
- 11 Fixed and Moveable Windows
- 12 Wipers & Washers

09 Seats
- 01 Power Seats

10 Heating, Ventilation & Air Conditioning
- 01 HVAC - Automatic
- 02 HVAC - Manual
- 03 Heating, Ventilation & Air Conditioning

11 Restraints
- 01 Supplemental Inflatable Restraints


ELECTRICAL COMPONENT LOCATOR

Fig. 1: Underhood Fuse Block
Fig. 2: Left & Right Instrument Panel Carrier
Fig. 3: Dash Panel Carrier
Fig. 4: Center Of Dash
Fig. 5: Right Front Of Vehicle
Fig. 6: Rear Frame & Underbody
Fig. 7: Right Front Of Engine (4.2L)
Fig. 8: Center Floor Pan
Fig. 9: Front Hubs & Rotors
Fig. 10: Center Of Floor Pan
Fig. 11: Dash Assembly
Fig. 12: Steering Wheel Assembly
Fig. 13: Lower Console
Fig. 14: Lower Left Side Of Dash
Fig. 15: Rear Floor Panel
Fig. 16: Right Body Side Inner Lower Panel
Fig. 17: Liftgate
Fig. 18: Right Front Of Engine Compartment
Fig. 19: Center Rear Of Engine Compartment
Fig. 20: Upper Left Side Of Engine (5.3L/6.0L)
Fig. 21: Upper Right Side Of Engine (5.3L/6.0L)
Fig. 22: Upper Right Side Of Engine (5.3L/6.0L)
Fig. 23: Lower Right Rear Of Engine (5.3L/6.0L)
Fig. 24: Power Brake Booster
Fig. 25: Under Left Side Of Dash
Fig. 26: Lower Left Side Of Engine (4.2L)
Fig. 27: Top Of Engine (4.2L)
Fig. 28: Right Side Of Transmission
Fig. 29: Center Of Dash
Fig. 30: Rear Of Engine Compartment
Fig. 31: Rear Of Front Fascia
Fig. 32: Left Side Of Engine (5.3L/6.0L)
Fig. 33: Right Side Of Engine (5.3L/6.0L)
Fig. 34: Chassis
Fig. 35: Rear Of Dash
Fig. 36: Passenger Compartment
Fig. 37: Under Floor Console
Fig. 38: Automatic Transmission Electronic Components
Fig. 39: Lower Left Side Of Engine (4.2L)
Fig. 40: Lower Right Side Of Engine (5.3L/6.0L)
Fig. 41: Right Rear Of Engine Compartment
Fig. 42: Left Front Of Engine (4.2L)
Fig. 43: Left "B" Pillar
Fig. 44: Right Side Of Instrument Panel Carrier
Fig. 45: Air Duct In Instrument Panel Carrier
Fig. 46: Center Section Of Instrument Panel Carrier
Fig. 47: Dash Panel
Fig. 48: Left Front Of Engine Compartment (4.2L)
Fig. 49: Instrument Panel Carrier
Fig. 50: Left Rear Of Engine Compartment
Fig. 51: Right Front Side Of Engine
Fig. 52: Front Of Engine (5.3L/6.0L)
Fig. 53: Overhead Console
Fig. 54: Lower Console
Fig. 55: Front Of Engine Compartment
Fig. 56: Lower Left Side Of Dash
Fig. 57: Behind Right Side Of Instrument Panel
Fig. 58: Driver Door
Fig. 59: Front Passenger Door
Fig. 60: Left Rear Door
Fig. 61: Right Rear Door
Fig. 62: Front Of Chassis
Fig. 63: Left Side Of Engine Compartment
Fig. 64: Left Front Side Of Engine
Fig. 65: Upper Right Side Of Engine
Fig. 66: Upper Left Side Of Engine (4.2L)
Fig. 67: Left Front Of Engine (5.3L/6.0L)
Fig. 68: Behind Left Headlamp
Fig. 69: Behind Right Headlamp
Fig. 70: Below Rear Of Engine
Fig. 71: Lower Left Front Of Engine Compartment
Fig. 72: Center Of Instrument Panel
Fig. 73: Steering Wheel Column
Fig. 74: Rear Floor
Fig. 75: Beneath Passenger Seat Cushion
Fig. 76: Right Rear Of Passenger Seat
Fig. 77: Under Driver Seat
Fig. 78: Under Passenger Seat
Fig. 79: Driver's Door
Fig. 80: Passenger's Door
Fig. 81: Lower Left Side Of Engine (5.3L/6.0L)
Fig. 82: Behind Driver Seat
Fig. 83: Behind Passenger Seat
Fig. 84: Beneath Driver Seat Cushion
Fig. 85: Left Side Of Automatic Transmission
Fig. 86: Center Of Rear Floor
Fig. 87: Upper Right Side Of Engine
Fig. 88: Sunroof Motor
Fig. 89: Rear Chassis
Fig. 90: Steering Column
Fig. 91: Lower Left Side Of Instrument Carrier Support
Fig. 92: Left Front Of Engine Compartment
Fig. 93: Rear Of Engine (5.3L/6.0L)
Fig. 94: Under Front Passenger Seat
Fig. 95: Engine (4.2L)
Fig. 96: Front Of Dash
Fig. 97: Headliner
Fig. 98: Underhood Fuse Block (4.2L)
Fig. 99: Behind Driver's Seat
Fig. 100: Behind Front Passenger's Seat
Fig. 101: Driver's Door
Fig. 102: Right Front Door
Fig. 103: Left Side Of Engine Compartment
Fig. 104: Lower Left Side Of Engine (5.3L/6.0L)
Fig. 105: Lower Left Side Of Engine (4.2L)
Fig. 106: Right Front Of Engine (5.3L/6.0L)
Fig. 107: Left Side Of Engine (5.3L/6.0L)
Fig. 108: Left "C" Pillar
Fig. 109: Left "D" Pillar
Fig. 110: Left Rear Of Chassis
Fig. 111: Underhood Fuse Block (5.3L/6.0L)
Fig. 112: Rear Fuse Block
Fig. 113: Rear Of Vehicle
Fig. 114: Instrument Panel Carrier
Fig. 115: Left Side Of Engine Compartment (5.3L/6.0L)
Fig. 116: Left Frame Rail


ELECTRICAL WIRING DIAGRAMS

2002 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit, Long Wheel Base W/ Rear Entertainment (1 of 3)
- 2: Automatic A/C Circuit, Long Wheel Base W/ Rear Entertainment (2 of 3)
- 3: Automatic A/C Circuit, Long Wheel Base W/ Rear Entertainment (3 of 3)
- 4: Automatic A/C Circuit, Long Wheel Base W/O Rear Entertainment (1 of 3)
- 5: Automatic A/C Circuit, Long Wheel Base W/O Rear Entertainment (2 of 3)
- 6: Automatic A/C Circuit, Long Wheel Base W/O Rear Entertainment (3 of 3)
- 7: Automatic A/C Circuit, Short Wheel Base (1 of 2)
- 8: Automatic A/C Circuit, Short Wheel Base (2 of 2)
- 9: Manual A/C Circuit, Long Wheel Base W/ Rear Entertainment (1 of 3)
- 10: Manual A/C Circuit, Long Wheel Base W/ Rear Entertainment (2 of 3)
- 11: Manual A/C Circuit, Long Wheel Base W/ Rear Entertainment (3 of 3)
- 12: Manual A/C Circuit, Long Wheel Base W/O Rear Entertainment (1 of 3)
- 13: Manual A/C Circuit, Long Wheel Base W/O Rear Entertainment (2 of 3)
- 14: Manual A/C Circuit, Long Wheel Base W/O Rear Entertainment (3 of 3)
- 15: Manual A/C Circuit, Short Wheel Base (1 of 2)
- 16: Manual A/C Circuit, Short Wheel Base (2 of 2)
- 17: Anti-lock Brake Circuits
- 18: Immobilizer Circuit
- 19: Pass-Key Circuit
- 20: Body Computer Circuits
- 21: Computer Data Lines
- 22: Cooling Fan Circuit
- 23: Cruise Control Circuit
- 24: Defogger Circuit
- 25: Electronic Suspension Circuit
- 26: 4.2L VIN S, Engine Performance Circuits (1 of 5)
- 27: 4.2L VIN S, Engine Performance Circuits (2 of 5)
- 28: 4.2L VIN S, Engine Performance Circuits (3 of 5)
- 29: 4.2L VIN S, Engine Performance Circuits (4 of 5)
- 30: 4.2L VIN S, Engine Performance Circuits (5 of 5)
- 31: Back-up Lamps Circuit
- 32: Exterior Lamps Circuit (1 of 2)
- 33: Exterior Lamps Circuit (2 of 2)
- 34: Ground Distribution Circuit (1 of 4)
- 35: Ground Distribution Circuit (2 of 4)
- 36: Ground Distribution Circuit (3 of 4)
- 37: Ground Distribution Circuit (4 of 4)
- 38: Headlight Circuit
- 39: Horn Circuit
- 40: Instrument Cluster Circuit
- 41: Courtesy Lamps Circuit (1 of 2)
- 42: Courtesy Lamps Circuit (2 of 2)
- 43: Instrument Illumination Circuit (1 of 2)
- 44: Instrument Illumination Circuit (2 of 2)
- 45: Driver's Memory Seat Circuit
- 46: Memory Mirrors Circuit
- 47: Passenger's Memory Seat Circuit
- 48: Power Distribution Circuit (1 of 5)
- 49: Power Distribution Circuit (2 of 5)
- 50: Power Distribution Circuit (3 of 5)
- 51: Power Distribution Circuit (4 of 5)
- 52: Power Distribution Circuit (5 of 5)
- 53: Power Door Lock Circuit
- 54: Automatic Day/Night Mirror Circuit
- 55: Power Mirrors Circuit
- 56: 8-Way Adjustable Power Seat Circuit
- 57: Lumbar Circuit
- 58: Power Top/Sunroof Circuits, Long Wheel Base
- 59: Power Top/Sunroof Circuits, Short Wheel Base
- 60: Power Window Circuit
- 61: Rear Quarter Windows Circuit
- 62: Base Radio Circuit, W/ Rear Seat Audio
- 63: Base Radio Circuit, W/O Rear Seat Audio
- 64: Premium Sound Radio Circuit (1 of 2)
- 65: Premium Sound Radio Circuit (2 of 2)
- 66: Ignition Lock Solenoid
- 67: Shift Interlock Circuit
- 68: Charging Circuit
- 69: Starting Circuit
- 70: Supplemental Restraint Circuit
- 71: 4.2L VIN S, A/T Circuit
- 72: 4.2L VIN S, Transfer Case Circuit
- 73: Warning System Circuits
- 74: Front Washer/Wiper Circuit
- 75: Headlamp Washer Circuit
- 76: Rear Washer/Wiper Circuit

2003 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit, Long Wheel Base (1 of 3)
- 2: Automatic A/C Circuit, Long Wheel Base (2 of 3)
- 3: Automatic A/C Circuit, Long Wheel Base (3 of 3)
- 4: Automatic A/C Circuit, Short Wheel Base (1 of 2)
- 5: Automatic A/C Circuit, Short Wheel Base (2 of 2)
- 6: Compressor Circuit
- 7: Manual A/C Circuit, Long Wheel Base (1 of 3)
- 8: Manual A/C Circuit, Long Wheel Base (2 of 3)
- 9: Manual A/C Circuit, Long Wheel Base (3 of 3)
- 10: Manual A/C Circuit, Short Wheel Base (1 of 2)
- 11: Manual A/C Circuit, Short Wheel Base (2 of 2)
- 12: Anti-lock Brakes Circuit
- 13: Forced Entry Circuit
- 14: Pass-Key Circuit
- 15: Body Control Modules Circuit
- 16: Computer Data Lines Circuit
- 17: Cooling Fan Circuit
- 18: 4.2L VIN S, Cruise Control Circuit
- 19: 5.3L VIN P, Cruise Control Circuit
- 20: Defoggers Circuit
- 21: Electronic Suspension Circuit
- 22: 4.2L VIN S, Engine Performance Circuit (1 of 5)
- 23: 4.2L VIN S, Engine Performance Circuit (2 of 5)
- 24: 4.2L VIN S, Engine Performance Circuit (3 of 5)
- 25: 4.2L VIN S, Engine Performance Circuit (4 of 5)
- 26: 4.2L VIN S, Engine Performance Circuit (5 of 5)
- 27: 5.3L VIN P, Engine Performance Circuit (1 of 5)
- 28: 5.3L VIN P, Engine Performance Circuit (2 of 5)
- 29: 5.3L VIN P, Engine Performance Circuit (3 of 5)
- 30: 5.3L VIN P, Engine Performance Circuit (4 of 5)
- 31: 5.3L VIN P, Engine Performance Circuit (5 of 5)
- 32: Back-up Lamps Circuit
- 33: Exterior Lamps Circuit (1 of 2)
- 34: Exterior Lamps Circuit (2 of 2)
- 35: Ground Distribution Circuit (1 of 4)
- 36: Ground Distribution Circuit (2 of 4)
- 37: Ground Distribution Circuit (3 of 4)
- 38: Ground Distribution Circuit (4 of 4)
- 39: Headlights Circuit
- 40: Horn Circuit
- 41: Instrument Cluster Circuit
- 42: Courtesy Lamps Circuit (1 of 2)
- 43: Courtesy Lamps Circuit (2 of 2)
- 44: Instrument Illumination Circuit (1 of 2)
- 45: Instrument Illumination Circuit (2 of 2)
- 46: Driver"s Memory Seat Circuit
- 47: Memory Mirrors Circuit
- 48: Passenger"s Memory Seat Circuit
- 49: Power Distribution Circuit (1 of 6)
- 50: Power Distribution Circuit (2 of 6)
- 51: Power Distribution Circuit (3 of 6)
- 52: Power Distribution Circuit (4 of 6)
- 53: Power Distribution Circuit (5 of 6)
- 54: Power Distribution Circuit (6 of 6)
- 55: Power Door Locks Circuit
- 56: Automatic Day/Night Mirror Circuit
- 57: Power Mirrors Circuit
- 58: 8-Way Adjustable Power Seat Circuit
- 59: Driver Heated Seat Circuit
- 60: Lumbar Circuit
- 61: Passenger"s Heated Seat Circuit
- 62: Power Top/Sunroof Circuit, Long Wheel Base
- 63: Power Top/Sunroof Circuit, Short Wheel Base
- 64: Power Windows Circuit
- 65: Rear Quarter Windows Circuit, Long Wheel Base
- 66: Base Radio Circuit, W/ Rear Seat Audio
- 67: Base Radio Circuit, W/O Rear Seat Audio
- 68: DVD Player/Voice Recorder Circuit
- 69: Premium Sound Radio Circuit (1 of 2)
- 70: Premium Sound Radio Circuit (2 of 2)
- 71: Ignition Lock Solenoid Circuit
- 72: Shift Interlock Circuit
- 73: Charging Circuit
- 74: Starting Circuit
- 75: Supplemental Restraints Circuit
- 76: Transfer Case Circuit, 2 Speed
- 77: Transfer Case Circuit, Single Speed
- 78: 4.2L VIN S, A/T Circuit
- 79: 5.3L VIN P, A/T Circuit
- 80: Warning Systems Circuit
- 81: Front Washer/Wiper Circuit
- 82: Headlamp Washer Circuit
- 83: Rear Washer/Wiper Circuit

2004 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit, Long Wheel Base (1 of 3)
- 2: Automatic A/C Circuit, Long Wheel Base (2 of 3)
- 3: Automatic A/C Circuit, Long Wheel Base (3 of 3)
- 4: Automatic A/C Circuit, Short Wheel Base (1 of 2)
- 5: Automatic A/C Circuit, Short Wheel Base (2 of 2)
- 6: Compressor Circuit
- 7: Manual A/C Circuit, Long Wheel Base (1 of 3)
- 8: Manual A/C Circuit, Long Wheel Base (2 of 3)
- 9: Manual A/C Circuit, Long Wheel Base (3 of 3)
- 10: Manual A/C Circuit, Short Wheel Base (1 of 2)
- 11: Manual A/C Circuit, Short Wheel Base (2 of 2)
- 12: Anti-lock Brakes Circuit, W/ Traction Control
- 13: Anti-lock Brakes Circuit, W/O Traction Control
- 14: Forced Entry Circuit
- 15: Pass-Key Circuit
- 16: Body Control Modules Circuit
- 17: Computer Data Lines Circuit
- 18: Cooling Fan Circuit
- 19: 4.2L VIN S, Cruise Control Circuit
- 20: 5.3L VIN P, Cruise Control Circuit
- 21: Defoggers Circuit
- 22: Electronic Suspension Circuit
- 23: 4.2L VIN S, Engine Performance Circuit (1 of 5)
- 24: 4.2L VIN S, Engine Performance Circuit (2 of 5)
- 25: 4.2L VIN S, Engine Performance Circuit (3 of 5)
- 26: 4.2L VIN S, Engine Performance Circuit (4 of 5)
- 27: 4.2L VIN S, Engine Performance Circuit (5 of 5)
- 28: 5.3L VIN P, Engine Performance Circuit (1 of 5)
- 29: 5.3L VIN P, Engine Performance Circuit (2 of 5)
- 30: 5.3L VIN P, Engine Performance Circuit (3 of 5)
- 31: 5.3L VIN P, Engine Performance Circuit (4 of 5)
- 32: 5.3L VIN P, Engine Performance Circuit (5 of 5)
- 33: Back-up Lamps Circuit
- 34: Exterior Lamps Circuit (1 of 2)
- 35: Exterior Lamps Circuit (2 of 2)
- 36: Ground Distribution Circuit (1 of 6)
- 37: Ground Distribution Circuit (2 of 6)
- 38: Ground Distribution Circuit (3 of 6)
- 39: Ground Distribution Circuit (4 of 6)
- 40: Ground Distribution Circuit (5 of 6)
- 41: Ground Distribution Circuit (6 of 6)
- 42: Headlights Circuit
- 43: Horn Circuit
- 44: Instrument Cluster Circuit
- 45: Courtesy Lamps Circuit (1 of 2)
- 46: Courtesy Lamps Circuit (2 of 2)
- 47: Instrument Illumination Circuit (1 of 2)
- 48: Instrument Illumination Circuit (2 of 2)
- 49: Adjustable Pedal Circuit
- 50: Driver"s Memory Seat Circuit
- 51: Memory Mirrors Circuit
- 52: Power Distribution Circuit (1 of 7)
- 53: Power Distribution Circuit (2 of 7)
- 54: Power Distribution Circuit (3 of 7)
- 55: Power Distribution Circuit (4 of 7)
- 56: Power Distribution Circuit (5 of 7)
- 57: Power Distribution Circuit (6 of 7)
- 58: Power Distribution Circuit (7 of 7)
- 59: Power Door Locks Circuit
- 60: Automatic Day/Night Mirror Circuit
- 61: Power Mirrors Circuit
- 62: 8-Way Adjustable Power Seat Circuit
- 63: Driver Heated Seat Circuit
- 64: Lumbar Circuit
- 65: Passenger"s Heated Seat Circuit
- 66: Power Top/Sunroof Circuit
- 67: Power Windows Circuit
- 68: Rear Quarter Windows Circuit, Long Wheel Base
- 69: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 70: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 71: Base Radio Circuit, W/O Rear Seat Audio
- 72: DVD Player/Voice Recorder Circuit
- 73: Mid-Line Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 74: Mid-Line Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 75: Mid-Line Radio Circuit, W/O Rear Seat Audio (1 of 2)
- 76: Mid-Line Radio Circuit, W/O Rear Seat Audio (2 of 2)
- 77: Premium Sound Radio Circuit (1 of 2)
- 78: Premium Sound Radio Circuit (2 of 2)
- 79: Ignition Lock Solenoid Circuit
- 80: Shift Interlock Circuit
- 81: Charging Circuit
- 82: Starting Circuit
- 83: Supplemental Restraints Circuit
- 84: A/T Circuit
- 85: Transfer Case Circuit, 2 Speed
- 86: Transfer Case Circuit, Single Speed
- 87: 4.2L VIN S, A/T Circuit
- 88: Warning Systems Circuit
- 89: Front Wiper/Washer Circuit
- 90: Headlamp Washer Circuit
- 91: Rear Wiper/Washer Circuit

2005 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit, Long Wheel Base (1 of 3)
- 2: Automatic A/C Circuit, Long Wheel Base (2 of 3)
- 3: Automatic A/C Circuit, Long Wheel Base (3 of 3)
- 4: Automatic A/C Circuit, Short Wheel Base (1 of 2)
- 5: Automatic A/C Circuit, Short Wheel Base (2 of 2)
- 6: Compressor Circuit
- 7: Manual A/C Circuit, Long Wheel Base (1 of 3)
- 8: Manual A/C Circuit, Long Wheel Base (2 of 3)
- 9: Manual A/C Circuit, Long Wheel Base (3 of 3)
- 10: Manual A/C Circuit, Short Wheel Base (1 of 2)
- 11: Manual A/C Circuit, Short Wheel Base (2 of 2)
- 12: Anti-lock Brakes Circuit, W/ Traction Control
- 13: Anti-lock Brakes Circuit, W/O Traction Control
- 14: Forced Entry Circuit
- 15: Passlock Circuit
- 16: Body Control Modules Circuit
- 17: Computer Data Lines Circuit
- 18: Auxiliary Cooling Fan Circuit
- 19: Cooling Fan Circuit
- 20: 4.2L VIN S, Cruise Control Circuit
- 21: 5.3L VIN M, Cruise Control Circuit
- 22: Defoggers Circuit
- 23: Electronic Suspension Circuit
- 24: 4.2L VIN S, Engine Performance Circuit (1 of 5)
- 25: 4.2L VIN S, Engine Performance Circuit (2 of 5)
- 26: 4.2L VIN S, Engine Performance Circuit (3 of 5)
- 27: 4.2L VIN S, Engine Performance Circuit (4 of 5)
- 28: 4.2L VIN S, Engine Performance Circuit (5 of 5)
- 29: 5.3L VIN M, Engine Performance Circuit (1 of 5)
- 30: 5.3L VIN M, Engine Performance Circuit (2 of 5)
- 31: 5.3L VIN M, Engine Performance Circuit (3 of 5)
- 32: 5.3L VIN M, Engine Performance Circuit (4 of 5)
- 33: 5.3L VIN M, Engine Performance Circuit (5 of 5)
- 34: Back-up Lamps Circuit
- 35: Exterior Lamps Circuit (1 of 2)
- 36: Exterior Lamps Circuit (2 of 2)
- 37: Ground Distribution Circuit (1 of 6)
- 38: Ground Distribution Circuit (2 of 6)
- 39: Ground Distribution Circuit (3 of 6)
- 40: Ground Distribution Circuit (4 of 6)
- 41: Ground Distribution Circuit (5 of 6)
- 42: Ground Distribution Circuit (6 of 6)
- 43: Headlights Circuit
- 44: Horn Circuit
- 45: Instrument Cluster Circuit
- 46: Courtesy Lamps Circuit (1 of 2)
- 47: Courtesy Lamps Circuit (2 of 2)
- 48: Instrument Illumination Circuit (1 of 2)
- 49: Instrument Illumination Circuit (2 of 2)
- 50: Adjustable Pedal Circuit
- 51: Driver"s Memory Seat Circuit
- 52: Memory Mirrors Circuit
- 53: Power Distribution Circuit (1 of 6)
- 54: Power Distribution Circuit (2 of 6)
- 55: Power Distribution Circuit (3 of 6)
- 56: Power Distribution Circuit (4 of 6)
- 57: Power Distribution Circuit (5 of 6)
- 58: Power Distribution Circuit (6 of 6)
- 59: Power Door Locks Circuit
- 60: Automatic Day/Night Mirror Circuit
- 61: Power Mirrors Circuit
- 62: 8-Way Adjustable Power Seat Circuit
- 63: Driver Heated Seat Circuit
- 64: Lumbar Circuit
- 65: Passenger"s Heated Seat Circuit
- 66: Power Top/Sunroof Circuit
- 67: Power Windows Circuit
- 68: Rear Quarter Windows Circuit, Long Wheel Base
- 69: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 70: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 71: Base Radio Circuit, W/O Rear Seat Audio
- 72: DVD Player Circuit
- 73: Premium Sound Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 74: Premium Sound Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 75: Premium Sound Radio Circuit, W/O Rear Seat Audio (1 of 2)
- 76: Premium Sound Radio Circuit, W/O Rear Seat Audio (2 of 2)
- 77: Ignition Lock Solenoid Circuit
- 78: Shift Interlock Circuit
- 79: Charging Circuit
- 80: Starting Circuit
- 81: Supplemental Restraints Circuit (1 of 2)
- 82: Supplemental Restraints Circuit (2 of 2)
- 83: Transfer Case Circuit, 2 Speed
- 84: Transfer Case Circuit, Single Speed
- 85: 4.2L VIN S, A/T Circuit
- 86: 5.3L VIN M, A/T Circuit (1 of 2)
- 87: 5.3L VIN M, A/T Circuit (2 of 2)
- 88: Warning Systems Circuit
- 89: Front Wiper/Washer Circuit
- 90: Headlamp Washer Circuit
- 91: Rear Wiper/Washer Circuit

2006 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit, Long Wheel Base (1 of 3)
- 2: Automatic A/C Circuit, Long Wheel Base (2 of 3)
- 3: Automatic A/C Circuit, Long Wheel Base (3 of 3)
- 4: Automatic A/C Circuit, Short Wheel Base (1 of 2)
- 5: Automatic A/C Circuit, Short Wheel Base (2 of 2)
- 6: Compressor Circuit
- 7: Manual A/C Circuit, Long Wheel Base (1 of 3)
- 8: Manual A/C Circuit, Long Wheel Base (2 of 3)
- 9: Manual A/C Circuit, Long Wheel Base (3 of 3)
- 10: Manual A/C Circuit, Short Wheel Base (1 of 2)
- 11: Manual A/C Circuit, Short Wheel Base (2 of 2)
- 12: Anti-lock Brakes Circuit (1 of 2)
- 13: Anti-lock Brakes Circuit (2 of 2)
- 14: Forced Entry Circuit
- 15: Passlock Circuit
- 16: Body Control Modules Circuit
- 17: Computer Data Lines Circuit
- 18: Cooling Fan Circuit
- 19: 4.2L VIN S, Cruise Control Circuit
- 20: 5.3L VIN M, Cruise Control Circuit
- 21: 6.0L VIN H, Cruise Control Circuit
- 22: Defoggers Circuit
- 23: Electronic Suspension Circuit
- 24: 4.2L VIN S, Engine Performance Circuit (1 of 7)
- 25: 4.2L VIN S, Engine Performance Circuit (2 of 7)
- 26: 4.2L VIN S, Engine Performance Circuit (3 of 7)
- 27: 4.2L VIN S, Engine Performance Circuit (4 of 7)
- 28: 4.2L VIN S, Engine Performance Circuit (5 of 7)
- 29: 4.2L VIN S, Engine Performance Circuit (6 of 7)
- 30: 4.2L VIN S, Engine Performance Circuit (7 of 7)
- 31: 5.3L VIN M, Engine Performance Circuit (1 of 5)
- 32: 5.3L VIN M, Engine Performance Circuit (2 of 5)
- 33: 5.3L VIN M, Engine Performance Circuit (3 of 5)
- 34: 5.3L VIN M, Engine Performance Circuit (4 of 5)
- 35: 5.3L VIN M, Engine Performance Circuit (5 of 5)
- 36: 6.0L VIN H, Engine Performance Circuit (1 of 5)
- 37: 6.0L VIN H, Engine Performance Circuit (2 of 5)
- 38: 6.0L VIN H, Engine Performance Circuit (3 of 5)
- 39: 6.0L VIN H, Engine Performance Circuit (4 of 5)
- 40: 6.0L VIN H, Engine Performance Circuit (5 of 5)
- 41: Back-up Lamps Circuit
- 42: Exterior Lamps Circuit (1 of 2)
- 43: Exterior Lamps Circuit (2 of 2)
- 44: Ground Distribution Circuit (1 of 6)
- 45: Ground Distribution Circuit (2 of 6)
- 46: Ground Distribution Circuit (3 of 6)
- 47: Ground Distribution Circuit (4 of 6)
- 48: Ground Distribution Circuit (5 of 6)
- 49: Ground Distribution Circuit (6 of 6)
- 50: Headlights Circuit
- 51: Horn Circuit
- 52: Instrument Cluster Circuit
- 53: Courtesy Lamps Circuit (1 of 2)
- 54: Courtesy Lamps Circuit (2 of 2)
- 55: Instrument Illumination Circuit (1 of 2)
- 56: Instrument Illumination Circuit (2 of 2)
- 57: Adjustable Pedal Circuit
- 58: Driver"s Memory Seat Circuit
- 59: Memory Mirrors Circuit
- 60: Navigation Circuit
- 61: Power Distribution Circuit (1 of 6)
- 62: Power Distribution Circuit (2 of 6)
- 63: Power Distribution Circuit (3 of 6)
- 64: Power Distribution Circuit (4 of 6)
- 65: Power Distribution Circuit (5 of 6)
- 66: Power Distribution Circuit (6 of 6)
- 67: Power Door Locks Circuit
- 68: Automatic Day/Night Mirror Circuit
- 69: Power Mirrors Circuit
- 70: 8-Way Adjustable Power Seat Circuit
- 71: Driver Heated Seat Circuit
- 72: Lumbar Circuit
- 73: Passenger"s Heated Seat Circuit
- 74: Power Top/Sunroof Circuit
- 75: Power Windows Circuit
- 76: Rear Quarter Windows Circuit
- 77: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 78: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 79: Base Radio Circuit, W/O Rear Seat Audio
- 80: DVD Player Circuit
- 81: Premium Sound Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 82: Premium Sound Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 83: Premium Sound Radio Circuit, W/O Rear Seat Audio (1 of 2)
- 84: Premium Sound Radio Circuit, W/O Rear Seat Audio (2 of 2)
- 85: Ignition Lock Solenoid Circuit
- 86: Shift Interlock Circuit
- 87: Charging Circuit
- 88: Starting Circuit
- 89: Supplemental Restraints Circuit (1 of 2)
- 90: Supplemental Restraints Circuit (2 of 2)
- 91: Transfer Case Circuit, 2 Speed
- 92: Transfer Case Circuit, Single Speed
- 93: 4.2L VIN S, A/T Circuit
- 94: 5.3L VIN M, A/T Circuit (1 of 2)
- 95: 5.3L VIN M, A/T Circuit (2 of 2)
- 96: Liftgate Release Circuit
- 97: Warning Systems Circuit
- 98: Front Wiper/Washer Circuit
- 99: Headlamp Washer Circuit
- 100: Rear Wiper/Washer Circuit

2007 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit (1 of 2)
- 2: Automatic A/C Circuit (2 of 2)
- 3: Compressor Circuit
- 4: Manual A/C Circuit (1 of 2)
- 5: Manual A/C Circuit (2 of 2)
- 6: Anti-lock Brakes Circuit (1 of 2)
- 7: Anti-lock Brakes Circuit (2 of 2)
- 8: Forced Entry Circuit
- 9: Passlock Circuit
- 10: Body Control Modules Circuit
- 11: Computer Data Lines Circuit
- 12: Cooling Fan Circuit
- 13: 4.2L VIN S, Cruise Control Circuit
- 14: 5.3L VIN M, Cruise Control Circuit
- 15: 6.0L VIN H, Cruise Control Circuit
- 16: Defoggers Circuit
- 17: Electronic Suspension Circuit
- 18: 4.2L VIN S, Engine Performance Circuit (1 of 7)
- 19: 4.2L VIN S, Engine Performance Circuit (2 of 7)
- 20: 4.2L VIN S, Engine Performance Circuit (3 of 7)
- 21: 4.2L VIN S, Engine Performance Circuit (4 of 7)
- 22: 4.2L VIN S, Engine Performance Circuit (5 of 7)
- 23: 4.2L VIN S, Engine Performance Circuit (6 of 7)
- 24: 4.2L VIN S, Engine Performance Circuit (7 of 7)
- 25: 5.3L VIN M, Engine Performance Circuit (1 of 5)
- 26: 5.3L VIN M, Engine Performance Circuit (2 of 5)
- 27: 5.3L VIN M, Engine Performance Circuit (3 of 5)
- 28: 5.3L VIN M, Engine Performance Circuit (4 of 5)
- 29: 5.3L VIN M, Engine Performance Circuit (5 of 5)
- 30: 6.0L VIN H, Engine Performance Circuit (1 of 5)
- 31: 6.0L VIN H, Engine Performance Circuit (2 of 5)
- 32: 6.0L VIN H, Engine Performance Circuit (3 of 5)
- 33: 6.0L VIN H, Engine Performance Circuit (4 of 5)
- 34: 6.0L VIN H, Engine Performance Circuit (5 of 5)
- 35: Back-up Lamps Circuit
- 36: Exterior Lamps Circuit (1 of 2)
- 37: Exterior Lamps Circuit (2 of 2)
- 38: Ground Distribution Circuit (1 of 4)
- 39: Ground Distribution Circuit (2 of 4)
- 40: Ground Distribution Circuit (3 of 4)
- 41: Ground Distribution Circuit (4 of 4)
- 42: Headlights Circuit (1 of 2)
- 43: Headlights Circuit (2 of 2)
- 44: Horn Circuit
- 45: Instrument Cluster Circuit
- 46: Courtesy Lamps Circuit
- 47: Instrument Illumination Circuit
- 48: Adjustable Pedal Circuit
- 49: Driver"s Memory Seat Circuit
- 50: Memory Mirrors Circuit
- 51: Navigation Circuit
- 52: Power Distribution Circuit (1 of 6)
- 53: Power Distribution Circuit (2 of 6)
- 54: Power Distribution Circuit (3 of 6)
- 55: Power Distribution Circuit (4 of 6)
- 56: Power Distribution Circuit (5 of 6)
- 57: Power Distribution Circuit (6 of 6)
- 58: Power Door Locks Circuit
- 59: Automatic Day/Night Mirror Circuit
- 60: Power Mirrors Circuit
- 61: 8-Way Adjustable Power Seat Circuit
- 62: Driver Heated Seat Circuit
- 63: Lumbar Circuit
- 64: Passenger"s Heated Seat Circuit
- 65: Power Top/Sunroof Circuit
- 66: Power Windows Circuit
- 67: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 68: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 69: Base Radio Circuit, W/O Rear Seat Audio
- 70: DVD Player Circuit
- 71: Premium Sound Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 72: Premium Sound Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 73: Premium Sound Radio Circuit, W/O Rear Seat Audio (1 of 2)
- 74: Premium Sound Radio Circuit, W/O Rear Seat Audio (2 of 2)
- 75: Ignition Lock Solenoid Circuit
- 76: Shift Interlock Circuit
- 77: Charging Circuit
- 78: Starting Circuit
- 79: Supplemental Restraints Circuit (1 of 2)
- 80: Supplemental Restraints Circuit (2 of 2)
- 81: Transfer Case Circuit, 2 Speed
- 82: Transfer Case Circuit, Single Speed
- 83: 4.2L VIN S, A/T Circuit
- 84: 5.3L VIN M, A/T Circuit (1 of 2)
- 85: 5.3L VIN M, A/T Circuit (2 of 2)
- 86: 6.0L VIN H, A/T Circuit (1 of 2)
- 87: 6.0L VIN H, A/T Circuit (2 of 2)
- 88: Liftgate Release Circuit
- 89: Warning Systems Circuit
- 90: Front Wiper/Washer Circuit
- 91: Headlamp Washer Circuit
- 92: Rear Wiper/Washer Circuit

2008 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit (1 of 2)
- 2: Automatic A/C Circuit (2 of 2)
- 3: Compressor Circuit
- 4: Manual A/C Circuit (1 of 2)
- 5: Manual A/C Circuit (2 of 2)
- 6: Anti-lock Brakes Circuit (1 of 2)
- 7: Anti-lock Brakes Circuit (2 of 2)
- 8: Forced Entry Circuit
- 9: Passlock Circuit
- 10: Body Control Modules Circuit
- 11: Computer Data Lines Circuit
- 12: 4.2L VIN S, Cruise Control Circuit
- 13: 5.3L VIN M, Cruise Control Circuit
- 14: 6.0L VIN H, Cruise Control Circuit
- 15: Defoggers Circuit
- 16: Electronic Suspension Circuit
- 17: 4.2L VIN S, Engine Performance Circuit (1 of 5)
- 18: 4.2L VIN S, Engine Performance Circuit (2 of 5)
- 19: 4.2L VIN S, Engine Performance Circuit (3 of 5)
- 20: 4.2L VIN S, Engine Performance Circuit (4 of 5)
- 21: 4.2L VIN S, Engine Performance Circuit (5 of 5)
- 22: 5.3L VIN M, Engine Performance Circuit (1 of 5)
- 23: 5.3L VIN M, Engine Performance Circuit (2 of 5)
- 24: 5.3L VIN M, Engine Performance Circuit (3 of 5)
- 25: 5.3L VIN M, Engine Performance Circuit (4 of 5)
- 26: 5.3L VIN M, Engine Performance Circuit (5 of 5)
- 27: 6.0L VIN H, Engine Performance Circuit (1 of 5)
- 28: 6.0L VIN H, Engine Performance Circuit (2 of 5)
- 29: 6.0L VIN H, Engine Performance Circuit (3 of 5)
- 30: 6.0L VIN H, Engine Performance Circuit (4 of 5)
- 31: 6.0L VIN H, Engine Performance Circuit (5 of 5)
- 32: Backup Lamps Circuit
- 33: Exterior Lamps Circuit (1 of 2)
- 34: Exterior Lamps Circuit (2 of 2)
- 35: Ground Distribution Circuit (1 of 4)
- 36: Ground Distribution Circuit (2 of 4)
- 37: Ground Distribution Circuit (3 of 4)
- 38: Ground Distribution Circuit (4 of 4)
- 39: Headlights Circuit
- 40: Horn Circuit
- 41: Instrument Cluster Circuit
- 42: Courtesy Lamps Circuit
- 43: Instrument Illumination Circuit
- 44: Adjustable Pedal Circuit
- 45: Driver"s Memory Seat Circuit
- 46: Memory Mirrors Circuit
- 47: Navigation Circuit
- 48: Power Distribution Circuit (1 of 5)
- 49: Power Distribution Circuit (2 of 5)
- 50: Power Distribution Circuit (3 of 5)
- 51: Power Distribution Circuit (4 of 5)
- 52: Power Distribution Circuit (5 of 5)
- 53: Power Door Locks Circuit
- 54: Automatic Day/Night Mirror Circuit
- 55: Power Mirrors Circuit
- 56: 8-Way Adjustable Power Seat Circuit
- 57: Driver Heated Seat Circuit
- 58: Lumbar Circuit
- 59: Passenger"s Heated Seat Circuit
- 60: Power Top/Sunroof Circuit
- 61: Power Windows Circuit
- 62: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 63: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 64: Base Radio Circuit, W/O Rear Seat Audio
- 65: DVD Player Circuit
- 66: Premium Sound Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 67: Premium Sound Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 68: Premium Sound Radio Circuit, W/O Rear Seat Audio (1 of 2)
- 69: Premium Sound Radio Circuit, W/O Rear Seat Audio (2 of 2)
- 70: Ignition Lock Solenoid Circuit
- 71: Shift Interlock Circuit
- 72: Charging Circuit
- 73: Starting Circuit
- 74: Supplemental Restraints Circuit (1 of 2)
- 75: Supplemental Restraints Circuit (2 of 2)
- 76: A/T Circuit (1 of 2)
- 77: A/T Circuit (2 of 2)
- 78: Transfer Case Circuit
- 79: Liftgate Release Circuit
- 80: Warning Systems Circuit
- 81: Front Wiper/Washer Circuit
- 82: Headlamp Washer Circuit
- 83: Rear Wiper/Washer Circuit

2009 Chevrolet TrailBlazer
- 1: Automatic A/C Circuit (1 of 2)
- 2: Automatic A/C Circuit (2 of 2)
- 3: Compressor Circuit
- 4: Manual A/C Circuit (1 of 2)
- 5: Manual A/C Circuit (2 of 2)
- 6: Anti-lock Brakes Circuit (1 of 2)
- 7: Anti-lock Brakes Circuit (2 of 2)
- 8: Forced Entry Circuit
- 9: Passlock Circuit
- 10: Body Control Modules Circuit
- 11: Computer Data Lines Circuit
- 12: Cruise Control Circuit
- 13: Defoggers Circuit
- 14: Electronic Suspension Circuit
- 15: 4.2L VIN S, Engine Performance Circuit (1 of 5)
- 16: 4.2L VIN S, Engine Performance Circuit (2 of 5)
- 17: 4.2L VIN S, Engine Performance Circuit (3 of 5)
- 18: 4.2L VIN S, Engine Performance Circuit (4 of 5)
- 19: 4.2L VIN S, Engine Performance Circuit (5 of 5)
- 20: 5.3L VIN M, Engine Performance Circuit (1 of 5)
- 21: 5.3L VIN M, Engine Performance Circuit (2 of 5)
- 22: 5.3L VIN M, Engine Performance Circuit (3 of 5)
- 23: 5.3L VIN M, Engine Performance Circuit (4 of 5)
- 24: 5.3L VIN M, Engine Performance Circuit (5 of 5)
- 25: 6.0L VIN H, Engine Performance Circuit (1 of 5)
- 26: 6.0L VIN H, Engine Performance Circuit (2 of 5)
- 27: 6.0L VIN H, Engine Performance Circuit (3 of 5)
- 28: 6.0L VIN H, Engine Performance Circuit (4 of 5)
- 29: 6.0L VIN H, Engine Performance Circuit (5 of 5)
- 30: Backup Lamps Circuit
- 31: Exterior Lamps Circuit (1 of 2)
- 32: Exterior Lamps Circuit (2 of 2)
- 33: Ground Distribution Circuit (1 of 4)
- 34: Ground Distribution Circuit (2 of 4)
- 35: Ground Distribution Circuit (3 of 4)
- 36: Ground Distribution Circuit (4 of 4)
- 37: Headlights Circuit
- 38: Horn Circuit
- 39: Instrument Cluster Circuit (2 of 1)
- 40: Courtesy Lamps Circuit
- 41: Instrument Illumination Circuit
- 42: Adjustable Pedal Circuit
- 43: Driver"s Memory Seat Circuit
- 44: Memory Mirrors Circuit
- 45: Navigation Circuit
- 46: Power Distribution Circuit (1 of 5)
- 47: Power Distribution Circuit (2 of 5)
- 48: Power Distribution Circuit (3 of 5)
- 49: Power Distribution Circuit (4 of 5)
- 50: Power Distribution Circuit (5 of 5)
- 51: Power Door Locks Circuit
- 52: Automatic Day/Night Mirror Circuit
- 53: Power Mirrors Circuit
- 54: 8-Way Adjustable Power Seat Circuit
- 55: Driver Heated Seat Circuit
- 56: Lumbar Circuit
- 57: Passenger"s Heated Seat Circuit
- 58: Power Top/Sunroof Circuit
- 59: Power Windows Circuit
- 60: Base Radio Circuit, W/ Rear Seat Audio (1 of 2)
- 61: Base Radio Circuit, W/ Rear Seat Audio (2 of 2)
- 62: Base Radio Circuit, W/O Rear Seat Audio
- 63: DVD Player Circuit
- 64: Premium Radio Circuit (1 of 2)
- 65: Premium Radio Circuit (2 of 2)
- 66: Ignition Lock Solenoid Circuit
- 67: Shift Interlock Circuit
- 68: Charging Circuit
- 69: Starting Circuit
- 70: Supplemental Restraints Circuit (1 of 2)
- 71: Supplemental Restraints Circuit (2 of 2)
- 72: A/T Circuit (1 of 2)
- 73: A/T Circuit (2 of 2)
- 74: Transfer Case Circuit
- 75: Liftgate Release Circuit
- 76: Warning Systems Circuit
- 77: Front Wiper/Washer Circuit
- 78: Headlamp Washer Circuit
- 79: Rear Wiper/Washer Circuit