GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Front of Engine (L66)


Object Number: 1760275  Size: LF
(1)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
(2)A/C High Pressure Switch (Incomplete)
(3)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
(4)A/C Compressor Clutch (Incomplete)
(5)Generator Connector
Figure 2:

Left Side of Engine (L66)


Object Number: 1760277  Size: LF
(1)Manifold Absolute Pressure (MAP) Sensor
(2)Fuse Block-Underhood C2
(3)Starter Relay
(4)G107
(5)Torque Converter Clutch (TCC) Pressure Control Solenoid Valve
(6)4th Clutch Pressure Switch
(7)Clutch Pressure Control Solenoid Valve 1
(8)Clutch Pressure Control Solenoid Valve 2
(9)Transmission Fluid Temperature (TFT) Sensor
(10)3rd Clutch Pressure Switch
(11)Transmission Output Shaft Speed Sensor
(12)Transmission Input Shaft Speed Sensor
(13)Park / Neutral Position (PNP) Switch
(14)C100 Engine Harness to Transmission Harness
(15)Engine Coolant Temperature (ECT) Sensor
(16)Exhaust Gas Recirculation (EGR) Valve
(17)Intake Air Temperature (IAT) Sensor 2
Figure 3:

Top of Engine (L66)


Object Number: 1760276  Size: LF
(1)Fuel Injector 6
(2)Ignition Coil 6
(3)Fuel Injector 5
(4)Ignition Coil 5
(5)Ignition Coil 4
(6)Fuel Injector 4
(7)Camshaft Position (CMP) Sensor
(8)Knock Sensor (KS)
(9)G109
(10)Ignition Coil 1
(11)Fuel Injector 1
(12)Ignition Coil 2
(13)Fuel Injector 2
(14)Ignition Coil 3
(15)Fuel Injector 3
Figure 4:

Rear Engine View (L66)


Object Number: 1760279  Size: LF
(1)Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(2)Splice Pack SP113
(3)C102
(4)Powertrain Control Module (PCM)
(5)Rocker Arm Oil Control Solenoid Pigtail Connector
(6)C103 (Crankshaft Position (CKP) Sensor Pigtail)
(7)Rocker Arm Oil Control Solenoid
(8)Engine Oil Pressure (EOP) Switch
(9)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
(10)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
(11)Splice Pack SP114
Figure 5:

Engine Components - Front View


Object Number: 1336160  Size: LF
(1)Intake Air Temperature (IAT) Sensor 2 (Sensor 1 in the Air Cleaner Housing)
(2)Manifold Absolute Pressure (MAP) Sensor
(3)Throttle Actuator Control (TAC) Module
(4)Engine Coolant Temperature (ECT) Sensor
(5)Exhaust Gas Recirculation (EGR) Valve
(6)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
(7)Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
(8)Ignition Control Modules (ICM) 4, 5, and 6
(9)Knock Sensor (KS)
Figure 6:

Engine Components - Rear View


Object Number: 1336164  Size: LF
(1)Camshaft Position (CMP) Sensor
(2)Crankshaft Position (CKP) Sensor
(3)Rocker Arm Oil Control Solenoid
(4)Rocker Arm Oil Pressure Switch
(5)Engine Oil Pressure (EOP) Switch
(6)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
(7)Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
(8)Ignition Control Modules (ICM) 1, 2, and 3
(9)Splice Pack SP113
(10)Splice Pack SP114
(11)Evaporative (EVAP) Emissions Purge Control Solenoid Valve
Figure 7:

APP Sensor Location


Object Number: 1644247  Size: SF
(1)Accelerator Pedal Position (APP) Sensor