GMC Sonoma 1993 - ELECTRICAL COMPONENT LOCATOR 1993 ELECTRICAL COMPONENT LOCATIONS General Motors Corp. Trucks

GMC Sonoma 1993 - BUZZERS, RELAYS & TIMERS

GMC Sonoma 1993 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Clutch Control Relay
2.5L (VIN A)	On left side of firewall. See Fig. 1 .
2.8L (VIN R)	On left side of firewall. See Fig. 2 .
4.3L (VIN Z - Turbo)	On left side of firewall. See Fig. 3 .
Blower Relay (High)	Near blower motor, on evaporator case.
Charge Air Cooler Pump Relay (4.3L VIN Z - Turbo)	On relay bracket, on center of firewall. See Fig. 3 .
Daytime Running Lights (DRL) Relay	On right side of steering column.
Foglight Relay	Above fuse block.
Fuel Pump Relay
2.5L (VIN A)	On firewall, left of brake booster. See Fig. 1 .
2.8L (VIN R)	On firewall, left of brake booster. See Fig. 2 .
4.3L (VIN W)	On firewall, left of brake booster. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On firewall, left of brake booster. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On firewall, left of brake booster. See Fig. 6 .
4.3L (VIN Z - Turbo)	On firewall, left of brake booster. See Fig. 3 .
Horn Relay	On convenience center.
Power Door Lock Relay	On right side of steering column bracket.
Rear Window Defogger Relay	On right side of brake pedal support bracket.
Rear Window Release Relay	Near fuse block.
Turbo Boost Cut-Out Relay (4.3L VIN Z - Turbo)	On relay bracket, on center of firewall. See Fig. 3 .
Turn Signal/Hazard Flasher
Digital Cluster	On fuse block.
Standard Cluster	On convenience center.

GMC Sonoma 1993 - CIRCUIT PROTECTION DEVICES

GMC Sonoma 1993 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Circuit Breakers
Power Accessories	At top of fuse block.
Power Windows	At bottom of fuse block.
Convenience Center	Left of steering column, at lower edge of dash.
Fuse Block
2.5L (VIN A)	Below left side of dash. See Fig. 1 .
2.8L (VIN R)	Below left side of dash. See Fig. 2 .
4.3L (VIN W)	Below left side of dash. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	Below left side of dash. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	Below left side of dash. See Fig. 6 .
4.3L (VIN Z - Turbo)	Below left side of dash. See Fig. 3 .
Fusible Links
Power Distribution (2.5L & 4.3L)	At rear of alternator (2 links).
Power Distribution (2.8L)	At starter solenoid.
Interior Lights In-line Fuse	On center of firewall.

GMC Sonoma 1993 - CONTROL UNITS

GMC Sonoma 1993 CONTROL UNITS LOCATION

Component	Location
ABS Module
RWAL	Below master cylinder.
4WAL	On left inner fender panel.
Audio Alarm Module	On convenience center.
Cruise Control Module	On left side of steering column.
Daytime Running Lights (DRL) Module	Above fuse block.
Digital Radio Adapter Controller (DRAC) (4.3L Turbo)	Behind right side of dash.
Diode Module (4.3L)	On wiring harness above fuse block.
Elapsed Timer Module (2.8L)	Under right side of dash, next to ECM. See Fig. 2 .
Elec. Shift Transfer Case Module	Near ECM/PCM
Electronic Control Module (ECM)
2.5L (VIN A)	Behind right side of dash. See Fig. 1 .
2.8L (VIN R)	Behind right side of dash. See Fig. 2 .
4.3L (VIN Z - Turbo)	Behind right side of dash. See Fig. 3 .
Ignition Control Module (IC)	Inside distributor assembly.
Intake Manifold Tuning Valve Controller (4.3L - VIN W)	On top of intake manifold.
Keyless Entry Module	Under Center Console.
Knock Sensor Control Module
2.8L (VIN R)	Near center of firewall. See Fig. 2 .
4.3L (VIN Z - A/T Non-Turbo)	Near center of firewall. See Fig. 5 .
Powertrain Control Module (PCM)
4.3L (VIN W)	Behind right side of dash. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	Behind right side of dash. See Fig. 5 .
Vehicle Control Module (VCM) (4.3L VIN Z - M/T Non-Turbo)	Behind right side of dash. See Fig. 6 .
Windshield Wiper Module	On center of firewall.

GMC Sonoma 1993 - SENDING UNITS & SENSORS

GMC Sonoma 1993 SENDING UNITS & SENSORS LOCATION

Component	Location
Coolant Level Sensor (4.3L Turbo)	On charge air cooler radiator.
Coolant Temperature Sending Unit (4.3L Turbo)	On side of left cylinder head.
Coolant Temperature Sensor
2.5L (VIN A)	On top front of engine. See Fig. 1 .
2.8L (VIN R)	On left top front of engine. See Fig. 2 .
4.3L (VIN Z - A/T Non-Turbo)	On left top front of engine. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On left top front of engine. See Fig. 6 .
4.3L (VIN Z - Turbo)	On left top front of engine. See Fig. 3 .
4.3L (VIN W)	On lower right front of engine. See Fig. 4 .
Knock Sensor
2.8L (VIN R)	On lower right side of engine. See Fig. 2 .
4.3L (VIN W)	On lower left & on top rear of engine. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On lower left & on top rear of engine. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On lower left & on top rear of engine. See Fig. 6 .
4.3L (VIN Z - Turbo)	On lower left & on top rear of engine. See Fig. 3 .
Manifold Absolute Pressure (MAP) Sensor
2.5L (VIN A)	On top right side of engine. See Fig. 1 .
2.8L (VIN R)	On left side of air cleaner housing. See Fig. 2 .
4.3L (VIN W)	On top front right side of engine. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On right side of air cleaner housing. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On right side of air cleaner housing. See Fig. 6 .
4.3L (VIN Z - Turbo)	On left side of intake plenum. See Fig. 3 .
2.5L (VIN A)	On throttle body assembly. See Fig. 1 .
2.8L (VIN R)	On throttle body assembly. See Fig. 2 .
4.3L (VIN W)	On throttle body assembly. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On throttle body assembly. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On throttle body assembly. See Fig. 6 .
4.3L (VIN Z - Turbo)	On throttle body assembly. See Fig. 3 .
Vehicle Speed Sensor (VSS)
2.5L (VIN A)	On left rear of transmission. See Fig. 1 .
2.8L (VIN R)	On left rear of transmission. See Fig. 2 .
4.3L (VIN W)	On left rear of transmission. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On left rear of transmission. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On left rear of transmission. See Fig. 6 .
4.3L (VIN Z - Turbo)	On left rear of transmission. See Fig. 3 .

GMC Sonoma 1993 - MOTORS

GMC Sonoma 1993 MOTORS LOCATION

Component	Location
Blower Motor	In evaporator housing, on right side of engine compartment.
Charge Air Cooler Pump Motor (4.3L Turbo)	On Lower left front of engine compartment.
Elec. Level Control Compressor (4.3L Turbo)	Mounted under left rear frame rail.
Idle Air Control (IAC) Motor	On throttle body.
Power Door Lock Motor	In bottom rear of each door.
Power Seat Motors	Under each front seats.
Power Window Motor	In each door.
Washer Pump Motor
Front	On center of firewall.
Rear	In washer fluid reservoir, above left wheelwell.
Wiper Motor
Front	On center of firewall.
Rear	On top center of rear liftgate.

GMC Sonoma 1993 - SOLENOIDS & SOLENOID VALVES

GMC Sonoma 1993 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Air By-Pass Solenoid
2.8L (VIN R)	On right front of engine. See Fig. 2 .
EGR Vacuum Solenoid
2.5L (VIN A)	On top right of engine, near A/C compressor. See Fig. 1 .
2.8L (VIN R)	On top left rear of engine, near distributor. See Fig. 2 .
4.3L (VIN Z - M/T Non-Turbo)	On top left of engine. See Fig. 6 .
4.3L (VIN Z - Turbo)	On top left of engine, near MAP sensor. See Fig. 3 .
Electronic Level Control Exhaust Valve Solenoid (4.3L Turbo)	Mounted on top of level control compressor.
Idle Air Control Valve (IAC)
2.5L (VIN A)	Near Throttle Body. See Fig. 1 .
2.8L (VIN R)	Near Throttle Body. See Fig. 2 .
4.3L (VIN W)	Near Throttle Body. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	Near Throttle Body. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	Near Throttle Body. See Fig. 6 .
4.3L (VIN Z - Turbo)	Near Throttle Body. See Fig. 3 .
Intake Manifold Tuning Valve Solenoid (4.3L VIN W)	On top center of intake runner.
Rear Window Release Solenoid	In center of tailgate.
Torque Converter Clutch Sol. (TCC)	On left side of transmission.
Wastegate Solenoid (4.3L VIN Z - Turbo)	On top of turbocharger. See Fig. 3 .

GMC Sonoma 1993 - SWITCHES

GMC Sonoma 1993 SWITCHES LOCATION

Component	Location
A/C Cycling Pressure Switch	On A/C accumulator, on right rear of engine compartment.
A/C Evaporator Pressure Control Switch (4.3L)	On A/C accumulator, on right rear of engine compartment.
A/C High Pressure Cut-Out Switch	On rear of A/C compressor.
Back-Up Light Switch
A/T	On top of steering column, built in with Park/Neutral switch.
M/T	On left side of transmission.
Brake Pressure Warning Switch	On brake proportioning valve, near master cylinder.
Brake/Cruise/Stoplight Switch	On brake pedal support bracket.
Clutch/Cruise Switch	On clutch pedal support bracket.
Front Axle Lock Switch	On front axle, near steering gear.
Fuel Pump/Oil Pressure Switch
2.5L (VIN A)	On right rear of engine. See Fig. 1 .
2.8L (VIN R)	On lower left side of engine. See Fig. 2 .
4.3L (VIN W)	On top rear of engine. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On top rear of engine. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On top rear of engine. See Fig. 6 .
4.3L (VIN Z - Turbo)	On top rear of engine. See Fig. 3 .
Park/Neutral Safety Switch	On top of steering column, below mounting bracket.
Parking Brake Switch	On base of parking brake assembly.
Power Steering Press. Switch (PSPS)	In power steering pressure hose, near steering gear. See Fig. 1 .
Seat Belt Retractor Switch	On driver's side seat belt buckle assembly.

GMC Sonoma 1993 - MISCELLANEOUS

GMC Sonoma 1993 MISCELLANEOUS LOCATION

Component	Location
Blower Motor Resistor	On evaporator case.
Data Link Connector (DLC)
2.5L (VIN A)	Under left side of dash, to right of steering column. See Fig. 1 .
2.8L (VIN R)	Under left side of dash, to right of steering column. See Fig. 2 .
4.3L (VIN W)	Under left side of dash, to right of steering column. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	Under left side of dash, to right of steering column. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	Under left side of dash, to right of steering column. See Fig. 6 .
4.3L (VIN Z - Turbo)	Under left side of dash, to right of steering column. See Fig. 3 .
Fuel Pump Prime/Test Connector
2.5L (VIN A)	On center of firewall. See Fig. 1 .
2.8L (VIN R)	On center of firewall. See Fig. 2 .
4.3L (VIN W)	On center of firewall. See Fig. 4 .
4.3L (VIN Z - A/T Non-Turbo)	On center of firewall. See Fig. 5 .
4.3L (VIN Z - M/T Non-Turbo)	On center of firewall. See Fig. 6 .
4.3L (VIN Z - Turbo)	On center of firewall. See Fig. 3 .
Vehicle Speed Sensor (VSS) Buffer	Near ECM/PCM/VCM.