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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1917 (Wiring Systems And Power Management - Introduction) >> Schematic and Routing Diagrams >> Electrical Schematic Symbols

Electrical Schematic Symbols

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Voltage Indicators

Symbol Description
GM1988677Courtesy of GENERAL MOTORS CORP.
Battery Voltage
GM1988679Courtesy of GENERAL MOTORS CORP.
Ignition Switch - Off Position
GM1988682Courtesy of GENERAL MOTORS CORP.
Ignition Switch - Accessory Position
GM1988686Courtesy of GENERAL MOTORS CORP.
Ignition Switch - Run Position
GM1988691Courtesy of GENERAL MOTORS CORP.
Ignition Switch - Start Position
General Icons

Symbol Description
GM1990537Courtesy of GENERAL MOTORS CORP.
Master Component List Icon
This icon is used on the schematic to link to the Master Electrical Component List.
GM1990538Courtesy of GENERAL MOTORS CORP.
Description and Operation Icon
This icon is used on the schematic to link to the Description and Operation of that particular system.
GM1988674Courtesy of GENERAL MOTORS CORP.
Computer Programming Icon
This icon is used on the schematic to link to Control Module References, which identifies which components need programming upon replacement.
GM1990541Courtesy of GENERAL MOTORS CORP.
Next Schematic Page Icon
This icon is used on the schematic to navigate to the next schematic in the subsystem.
GM1990542Courtesy of GENERAL MOTORS CORP.
Previous Schematic Page Icon
This icon is used on the schematic to navigate to the previous schematic in the subsystem.
GM1988667Courtesy of GENERAL MOTORS CORP.
Supplemental Inflatable Restraint (SIR) or Supplemental Restraint System (SRS) Icon
This icon is used to alert the technician that the system contains SIR/SRS components that require certain precautions before servicing.
GM1988670Courtesy of GENERAL MOTORS CORP.
Information Icon
This icon is used to alert the technician that there is additional information that will aid in servicing a system.
GM1988672Courtesy of GENERAL MOTORS CORP.
Danger - High Voltage Icon
This icon is used to alert the technician that a component/system contains 300 volt circuits.
GM1988673Courtesy of GENERAL MOTORS CORP.
High Voltage Icon
This icon is used to alert the technician that a component/system contains voltage greater than 42 volts but less than 300 volts.
GM1990543Courtesy of GENERAL MOTORS CORP.
Caution Icon
This icon is used to advise the technician to use caution when servicing this component.
GM1988675Courtesy of GENERAL MOTORS CORP.
Functional Serial Data Communication
This icon is used to show the technician that the serial data circuit detail is shown incomplete. It also provides an active link to the Data Communication Schematics were the circuit is shown complete.
Switch Position Icons

Symbol Description
GM1989016Courtesy of GENERAL MOTORS CORP.
Generic Up Arrows
GM1990554Courtesy of GENERAL MOTORS CORP.
Generic Down Arrows
GM1990555Courtesy of GENERAL MOTORS CORP.
Generic Left Arrows
GM1990556Courtesy of GENERAL MOTORS CORP.
Generic Right Arrows
GM1990557Courtesy of GENERAL MOTORS CORP.
Generic Express Down Arrows
GM1990558Courtesy of GENERAL MOTORS CORP.
On/Off Icon
GM1990559Courtesy of GENERAL MOTORS CORP.
Generic Lock Icon
GM1990560Courtesy of GENERAL MOTORS CORP.
Generic Unlock Icon
GM1989018Courtesy of GENERAL MOTORS CORP.
Generic Window Switch Positions - 4 Door
GM1989020Courtesy of GENERAL MOTORS CORP.
Generic Window Switch Positions - 2 Door
Module Circuit Function Icons

Symbol Description
GM1988774Courtesy of GENERAL MOTORS CORP.
I/O Pull-Down Resistors (-)
GM1990567Courtesy of GENERAL MOTORS CORP.
I/O Pull-Up Resistors (+)
GM1988775Courtesy of GENERAL MOTORS CORP.
I/O High-Side Drive Switch (+)
GM1990568Courtesy of GENERAL MOTORS CORP.
I/O Low-Side Drive Switch (+)
GM1990570Courtesy of GENERAL MOTORS CORP.
I/O Bidirectional Switch (+/-)
GM1990571Courtesy of GENERAL MOTORS CORP.
Pulse-Width Modulation Symbol
GM1990573Courtesy of GENERAL MOTORS CORP.
Battery Voltage
GM1990574Courtesy of GENERAL MOTORS CORP.
Ignition Voltage
GM1990576Courtesy of GENERAL MOTORS CORP.
Voltage Reference
GM1990577Courtesy of GENERAL MOTORS CORP.
A/C Voltage
GM1988986Courtesy of GENERAL MOTORS CORP.
Low Reference
GM1990578Courtesy of GENERAL MOTORS CORP.
Ground
GM1990579Courtesy of GENERAL MOTORS CORP.
Serial Data
GM1988973Courtesy of GENERAL MOTORS CORP.
Antenna Signal - In
GM1988974Courtesy of GENERAL MOTORS CORP.
Antenna Signal - Out
GM2161152Courtesy of GENERAL MOTORS CORP.
Brake Apply
Harness Components

Symbol Description
GM1988731Courtesy of GENERAL MOTORS CORP.
Fuse
GM1988733Courtesy of GENERAL MOTORS CORP.
Fuse Supplied by a Relay
GM1988740Courtesy of GENERAL MOTORS CORP.
Circuit Breaker
GM1988745Courtesy of GENERAL MOTORS CORP.
Fusible Link
GM1988987Courtesy of GENERAL MOTORS CORP.
Ground
GM1988746Courtesy of GENERAL MOTORS CORP.
Case Ground
GM1988977Courtesy of GENERAL MOTORS CORP.
Inline Harness Connector
GM1990974Courtesy of GENERAL MOTORS CORP.
Inline Harness Connector
GM1990975Courtesy of GENERAL MOTORS CORP.
Pigtail Connection
GM1990976Courtesy of GENERAL MOTORS CORP.
Pigtail Connection
GM1990977Courtesy of GENERAL MOTORS CORP.
Provisional or Diagnostic Connector
GM1990978Courtesy of GENERAL MOTORS CORP.
Blunt Cut Wire
GM1988980Courtesy of GENERAL MOTORS CORP.
Incomplete Physical Splice
GM1988981Courtesy of GENERAL MOTORS CORP.
Complete Physical Splice - 2 Wires
GM1988982Courtesy of GENERAL MOTORS CORP.
Complete Physical Splice - 3 or more wires
GM1990979Courtesy of GENERAL MOTORS CORP.
Wire Crosses
GM1988988Courtesy of GENERAL MOTORS CORP.
Twisted Wires
GM1988990Courtesy of GENERAL MOTORS CORP.
Shield
GM1990980Courtesy of GENERAL MOTORS CORP.
Circuit References
GM1990981Courtesy of GENERAL MOTORS CORP.
Circuit Continuation Arrowheads
GM1988983Courtesy of GENERAL MOTORS CORP.
Option Breakpoint
GM1988984Courtesy of GENERAL MOTORS CORP.
Ground Circuit Connection
GM1988985Courtesy of GENERAL MOTORS CORP.
Connector Shorting Clip
Component Parts

Symbol Description
GM1988694Courtesy of GENERAL MOTORS CORP.
Partial Component
When a component is represented in a dashed box, the component or its wiring is not shown in its entirety.
GM1988698Courtesy of GENERAL MOTORS CORP.
Entire Component
When a component is represented in a solid box the component or its wiring is shown in its entirety.
GM1988712Courtesy of GENERAL MOTORS CORP.
Connector Directly Attached to Component
GM1988715Courtesy of GENERAL MOTORS CORP.
Pigtail Connector
Switches and Relays

Symbol Description
GM1991015Courtesy of GENERAL MOTORS CORP.
Accessory Power Outlet
GM1991016Courtesy of GENERAL MOTORS CORP.
Cigar Lighter
GM1988991Courtesy of GENERAL MOTORS CORP.
Switch - 2 Position Normally Open
GM1988992Courtesy of GENERAL MOTORS CORP.
Switch - 2 Position Normally Closed
GM1988993Courtesy of GENERAL MOTORS CORP.
Switch - Rocker
GM1991017Courtesy of GENERAL MOTORS CORP.
Switch - Contact Plate (1 Wire)
GM1988994Courtesy of GENERAL MOTORS CORP.
Switch - Contact Plate (2 Wire)
GM1991018Courtesy of GENERAL MOTORS CORP.
Switch - 3 Position
GM1988995Courtesy of GENERAL MOTORS CORP.
Switch - 4 Position
GM1991019Courtesy of GENERAL MOTORS CORP.
Switch - 5 Position
GM1991021Courtesy of GENERAL MOTORS CORP.
Switch - 6 Position
GM1988997Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Push (Momentary)
GM1988998Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Push (Latching)
GM1988999Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Pull (Momentary)
GM1989000Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Pull (Latching)
GM1989001Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Rotate (Momentary)
GM1989002Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Rotate (Latching)
GM1989003Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Slide (Momentary)
GM1989004Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Slide (Latching)
GM1989007Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Pressure (Momentary)
GM1989010Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Temperature (Momentary)
GM1989013Courtesy of GENERAL MOTORS CORP.
Switch Actuator - Volume (Latching)
GM1988975Courtesy of GENERAL MOTORS CORP.
4-Pin Single Pole/Throw Relay - Normally Open
GM1990539Courtesy of GENERAL MOTORS CORP.
5-Pin Relay - Normally Closed
Devices and Sensors

Symbol Description
GM1988751Courtesy of GENERAL MOTORS CORP.
Battery
GM1988753Courtesy of GENERAL MOTORS CORP.
Battery Assembly - Hybrid
GM1988717Courtesy of GENERAL MOTORS CORP.
Single Filament Light Bulb
GM1988719Courtesy of GENERAL MOTORS CORP.
Double Filament Light Bulb
GM1988722Courtesy of GENERAL MOTORS CORP.
Light Emitting Diode (LED)
GM1988725Courtesy of GENERAL MOTORS CORP.
Photo Sensor
GM1990988Courtesy of GENERAL MOTORS CORP.
Gage
GM1988776Courtesy of GENERAL MOTORS CORP.
Diode
GM1988748Courtesy of GENERAL MOTORS CORP.
Capacitor
GM1988755Courtesy of GENERAL MOTORS CORP.
Resistor
GM1988759Courtesy of GENERAL MOTORS CORP.
Variable Resistor
GM1990991Courtesy of GENERAL MOTORS CORP.
Variable Resistor - NTC
GM1990992Courtesy of GENERAL MOTORS CORP.
Breakable Wire
GM1988778Courtesy of GENERAL MOTORS CORP.
Heating Element
GM1988771Courtesy of GENERAL MOTORS CORP.
Position Sensor
GM1988773Courtesy of GENERAL MOTORS CORP.
Pressure Sensor
GM1990993Courtesy of GENERAL MOTORS CORP.
Knock Sensor
GM1990994Courtesy of GENERAL MOTORS CORP.
Inductive Type Sensor - 2-Wire
GM1990996Courtesy of GENERAL MOTORS CORP.
Inductive Type Sensor - 3-Wire
GM1990998Courtesy of GENERAL MOTORS CORP.
Hall Effect Sensor - 2-Wire
GM1990999Courtesy of GENERAL MOTORS CORP.
Hall Effect Sensor - 3-Wire
GM1991000Courtesy of GENERAL MOTORS CORP.
Oxygen Sensor - 2-Wire
GM1991001Courtesy of GENERAL MOTORS CORP.
Heated Oxygen Sensor - 4-Wire
GM1988970Courtesy of GENERAL MOTORS CORP.
Solenoid - Actuator
GM1988971Courtesy of GENERAL MOTORS CORP.
Solenoid - Valve
GM1988972Courtesy of GENERAL MOTORS CORP.
Clutch
GM1988779Courtesy of GENERAL MOTORS CORP.
Motor
GM1991003Courtesy of GENERAL MOTORS CORP.
Motor with PTC
GM1988729Courtesy of GENERAL MOTORS CORP.
Antenna
GM1991005Courtesy of GENERAL MOTORS CORP.
Speaker
GM1991006Courtesy of GENERAL MOTORS CORP.
Horn
GM1991007Courtesy of GENERAL MOTORS CORP.
Microphone
GM1991008Courtesy of GENERAL MOTORS CORP.
Airbag
GM1991009Courtesy of GENERAL MOTORS CORP.
SIR Coil
GM1991010Courtesy of GENERAL MOTORS CORP.
SIR Impact Sensor