GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch

On the front of the A/C compressor, in the left front side of the engine

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

A/C Compressor Clutch Relay

In the underhood fuse-relay center, in the left rear side of the engine compartment, on the fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

A/C Compressor Cycling Switch

On the top right of the A/C accumulator, in the right side of the engine compartment, on the bulkhead

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

A/C Compressor High Pressure Cutout Switch

On the rear of the A/C compressor, in the left front side of the engine

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Camshaft Position Sensor

Top rear center of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Clutch Pedal Position Switch

Forward from the top of Clutch Pedal at the entrance to the clutch master cylinder

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Crankshaft Position (CKP) Sensor

Lower RF of Engine Block, near Crankshaft

Engine Controls Component Views

Engine Controls Connector End Views

Data Link Connector (DLC)

Under LH of IP, LH of Steering Column, mounted to bottom of Knee Bolster

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electronic Brake Control Module (EBCM)

Near Brake Master Cylinder, at LF Wheelhousing

Antilock Brake System Component Views in Antilock Brake Systems

Antilock Brake System Connector End Views in Antilock Brake Systems

Electronic Variable Orifice (EVO)/Passlock Module

Under the center of the IP

Theft Deterrent System Component Views in Theft Deterrent

Theft Deterrent System Connector End Views in Theft Deterrent

Engine Coolant Temperature Sensor

Top, right, front of engine, near the thermostat housing

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Pressure Sensor/Fuel Pump Switch

Top, rear of engine, between the cylinder banks, near the fuel management/filter assembly

Engine Controls Component Views

Engine Controls Connector End Views

Boost Pressure/BARO Sensor

Top of Engine assembly

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Heater

Top rear of Engine in the fuel filter assembly

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Lift Pump

Inside LH Frame Rail, below LF Door

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Balance Pump (Dual Tanks)

Inside LH Frame Rail, ahead of rear axle

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Tank Level Sender

In Fuel Tank

Engine Controls Component Views

Engine Controls Connector End Views

Glow Plug Controller

LR of Engine, near Bulkhead

Engine Controls Component Views

Engine Controls Connector End Views

Glow Plug Relay

LR of Engine, near Bulkhead

Engine Controls Component Views

Engine Controls Connector End Views

HVAC Control Module

Part of the heater controls, in the center of the IP, under the radio

HVAC Component Views in HVAC Systems with A/C Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Instrument Cluster

On the upper left end of the IP, above the steering column

Instrument Panel, Gages, and Console Component Views in Instrument Panel and Console

Instrument Panel, Gages, and Console Connector End Views in Instrument Panel and Console

Intake Air Temperature (IAT) Sensor

At LF of Engine, near Intake Manifold opening

Engine Controls Component Views

Engine Controls Connector End Views

IP Fuse Block

To the left of the IP, near the left front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (PCM)

Under RH end of IP, above Blower Motor, behind IP Compartment Box

Engine Controls Component Views

Powertrain Control Module Connector End Views

Radio, Connector C2

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Remote Battery Stud

On the rear of underhood fuse-relay center, toward the fender, Terminal for the battery cable and the glowplug feed

Underhood Fuse Relay Center


Object Number: 192972  Size: MF
(1)Underhood Fuse Relay Center
(2)Stop Lamp Relay
(3)Electronic Brake Control Module (EBCM)
(4)Glow Plug Relay Battery Feed
(5)Battery Cable
(6)A/C Relay
(7)Fuel Pump Relay

Power and Grounding Connector End Views in Wiring Systems

Stoplamp Switch

On the top of the brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Transfer Case Shift Control Module (Automatic 4WD)

Under IP, near the convience center

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Timing Logic and Relay Module

RR of Engine Compartment, near center of Bulkhead

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Switch

LH side of transfer case housing, toward the front

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Underhood Fuse Block

In the left rear side of the engine compartment, on the fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (w/RWD)

LR of Transmission

Engine Controls Component Views

Engine Controls Connector End Views

Vehicle Speed Sensor (w/4WD)

LR of Transfer Case

Engine Controls Component Views

Engine Controls Connector End Views

Wastegate Solenoid

Top LR of Engine, above Valve Cover

Engine Controls Component Views

Engine Controls Connector End Views

Water-in-Fuel Sensor

Top near of Engine

Engine Controls Component Views

Engine Controls Connector End Views

C100

Part of the engine harness to IP harness, in the left rear side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C103

Part of the engine harness to fuel pump motor, in the left rear side of the engine compartment, under the brake master cylinder

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C112

Part of the engine harness to engine sensors, center rear of the engine

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C122 (M30)

On the right side of the transmission

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C122 (MT1)

On the left side of the transmission

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Behind the right side of the IP, near the heater motor, in foam wrap

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C204

Behind the right side of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C223

At the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C227 (Stoplamp Switch Jumper)

IP harness, Inline to the Stoplamp Switch

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C266

Part of the IP harness to steering column harness, to the left side of the steering column, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D104

Part of the engine harness, approximately 28 cm (11 in) from the A/C compressor clutch connector

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G104

Top rear of the right cylinder head

Power and Grounding Component Views in Wiring Systems

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G105

Right Rear of the cylinder head, cylinder #7 intake bolt

Power and Grounding Component Views in Wiring Systems

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G404

Inside the left side frame rail, near the rear crossmember

Power and Grounding Component Views in Wiring Systems

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P101

In the right rear side of the engine compartment, below the A/C accumulator

Harness Routing Views in Wiring Systems

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S100 (6.5L - A/T)

Engine harness, approx. 31 cm (12 in) from taillamp harness breakout

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S100 (6.5L - M/T

Engine harness, approx. 37 cm (14.5 in) from EBCM breakout, toward taillamp harness

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S101 (Diesel)

Engine harness approx. 6.5 cm (2.5 in) from EBCM harness breakout into the PCM harness

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S108

Engine harness, approx. 6 cm (2.5 in) from Transmission harness breakout, towards the PCM

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S111

Engine harness approx. 11 cm (4 in) from EBCM breakout, toward glow plugs

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S147

Engine harness, approx. 4 cm (1.5 in) from starter motor solenoid breakout

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S150

Engine harness, approx. 13 cm (5 in) from EBCM breakout

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S152

Engine harness, approx. 4 cm (1.5 in) from IP harness breakout, toward P101

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S166 (A/T)

Engine harness, approx. 8 cm (3 in) from fuel heater breakout

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S166 (M/T, HD)

Engine harness, approx. 5 cm (2 in) from glow plugs breakout

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S166 (M/T, LD)

Engine harness, approx. 1 cm (0.5 in) from fuel heater breakout

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S199

Engine harness, approx. 31 cm (12 in) from taillamp harness breakout

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S204

IP harness, approx. 10 cm (4 in) from C100, towards Data Link Connector (DLC)

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S211

IP harness, approx. 16 cm (6 in) into instrument cluster breakout

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S213

IP harness, approx. 4 cm (1.5 in) from steering column harness breakout, towards the DLC

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S215

IP harness, approx. 8 cm (3 in) from instrument cluster breakout, toward radio connectors breakout

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S220

IP harness, approx. 6 cm (2.5 in) from steering column harness breakout, toward C100

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S221

IP harness, approx. 40 cm (15.5 in) from instrument cluster breakout

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S222

IP harness, approx. 20 cm (8 in) from inflatable restraint switch breakout

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S268

IP harness, approx. 7 cm (2.5 in) into the HVAC Control Switch harness breakout

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S280

IP harness, approx. 5 cm (2 in) from DLC breakout

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S298

IP harness, approx. 24 cm (9.5 in) from instrument cluster breakout, toward radio breakout

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S299

IP harness, approx. 4 cm (1.5 in) into the steering column harness breakout, toward C266

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S314 (K300)

Selectable 4W harness, approx. 5 cm (2 in) from transfer case relay breakout, toward front axle switch

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S318

Taillamp extension harness, approx. 10 cm (4 in) from fuel pump balance module breakout, toward engine harness

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