GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Grand Am 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Engine Harness Routing Views

Battery
Object Number: 179591 Size: SH
(1)Positive Battery Cable
(2)Negative Battery Cable
(3)Battery Ground
(4)Engine Ground
(5)Underhood Junction Block

Underhood Junction Block
Object Number: 179592 Size: SH
(1)Electrical Center Cap
(2)Positive Battery Cable to Underhood Junction Block
(3)Positive Battery Cable
(4)Battery

LH Hand Rear of Engine Compartment
Object Number: 179595 Size: SH
(1)Brake Pressure Switch
(2)Master Cylinder

Front of Engine Compartment
Object Number: 179605 Size: SH
(1)Switch, A/C Pressure
(2)Connector, Fan Motor
(3)To Main Engine Wiring Harness

Left Hand Rear of Engine Compartment
Object Number: 179608 Size: SH
(1)Brake Pressure Switch
(2)To Underhood Junction Block
(3)Grommet

Starter and Crankshaft Sensors
Object Number: 179610 Size: SF
(1)Positive Battery Cable
(2)Fusible Link
(3)Starter
(4)Crankshaft Position (CKP) Sensor

Right Hand Side of Engine
Object Number: 179697 Size: SH
(1)Generator
(2)Connector, Generator
(3)Coolant Temperature Sensor
(4)Camshaft Position

Right Hand Front of Engine
Object Number: 179663 Size: MF
(1)Generator
(2)Generator Lead
(3)Ground Splice Pack
(4)Ground Splice Pack
(5)Engine Wiring Harness
(6)Canister Purge Solenoid
(7)Connector, A/C Compressor
(8)A/C Compressor
(9)Connector, Generator

Front of Engine
Object Number: 179678 Size: SH
(1)Throttle Position Sensor (TPS)
(2)Mass Air Flow Sensor (MAF)
(3)Vacuum Tube
(4)Idle Air Control (IAC) Valve

Top Front of Engine
Object Number: 179680 Size: SH
(1)Exhaust Gas Recirculation (EGR) Valve
(2)Throttle Position Sensor (TPS)
(3)Camshaft Position Sensor
(4)Connector, Camshaft Position Sensor
(5)Connector, Fuel Injector

Removal Procedure

Disconnect the cables by squeezing the oblong connector at the following points:

    • The motors
    • The gear nuts
    • The adjuster drives

Installation Procedure

Connect the cables by pushing onto the connector until you hear a click.

Oxygen Sensor Lead
Object Number: 179684 Size: SH
(1)Connector, Oxygen Sensor
(2)Coolant Vent Pipe
(3)Exhaust Manifold

Left Hand Front of Engine
Object Number: 179686 Size: SH
(1)Engine Wiring Harness
(2)Neutral Start Back-up Switch (NSBU)
(2)Neutral Start Back-up Switch (NSBU)
(3)Manifold Air Temperature (MAT) Sensor
(4)To Cooling Fan Motors
(5)Automatic Transaxle
(6)To Starter Motor

Right Hand Rear of Engine
Object Number: 179687 Size: SH
(1)Transaxle Bracket
(2)Vehicle Speed Sensor (VSS)
(3)To Antilock Brake System
(4)Heater Pipe

Lower Front of Engine
Object Number: 179688 Size: SH
(1)Radiator Hoses
(2)Engine Wiring Harness

Rear of Engine
Object Number: 179689 Size: SH
(1)Engine Wiring Harness
(2)Connector, Rear Oxygen Sensor

Left Hand Rear of Engine Compartment
Object Number: 179691 Size: SH
(1)Brake Pressure Switch
(2)Engine Wiring Harness

Starter
Object Number: 179692 Size: SH
(1)To A/C Compressor
(2)Positive Battery Cable
(3)Starter Solenoid
(4)Starter Solenoid Ground
(5)Starter Assembly
(6)Battery Positive

Left Hand Side of Engine
Object Number: 179693 Size: SH
(1)Battery Ground
(2)Neutral Start Back-up Switch (NSBU)
(2)Neutral Start Back-up Switch (NSBU)
(3)Antilock Brake System (ABS)
(4)Cooling Fan Lead
(5)Automatic Transaxle

Front of Engine
Object Number: 179694 Size: SH
(1)Oil Pressure Sensor
(2)Positive Battery Cable
(3)Engine Wiring Harness
(4)Engine Mount Bracket
(5)Negative Battery Cable
(6)Ground Splice Pack
(7)Starter Motor Assembly
(8)Oil Pan
(9)Knock Sensor
(10)A/C Compressor Clutch
(11)A/C Compressor
(12)Crankshaft Position Sensor
(13)Water Pump

Top Rear of Engine
Object Number: 179695 Size: SH
(1)Camshaft Position Sensor
(2)Coolant Temperature Sensor
(3)Inline to Fuel Injectors
(4)Electronic Ignition (EI) Module
(5)Oxygen Sensor
(6)Canister Purge Solenoid
(7)Connector, Electronic Ignition (EI) Module

Right Hand Rear of Engine
Object Number: 179698 Size: SH
(1)Low Oil Level Sensor
(2)To Antilock Brake System (ABS)
(3)Vehicle Speed Sensor (VSS)