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

Left Side of the Engine Components (4.8L/5.3L/6.0L)


Object Number: 334934  Size: LF
(1)Manifold Absolute Pressure (MAP) sensor
(2)Fuel Pressure Regulator
(3)Positive Crankcase Ventilation (PCV) Valve
(4)Left Bank Ignition Coils
(5)Engine Oil Pressure (EOP) Sensor
(6)Engine Coolant Temperature (ECT) Sensor
(7)Throttle Position (TP) Sensor
(8)Throttle Body
(9)Idle Air Control (IAC) Valve
(10)Evaporative Emission (EVAP) Canister Purge Solenoid
Figure 2:

Coolant Level Switch


Object Number: 776658  Size: MF
(1)Coolant Level Switch Connector
Figure 3:

Engine Coolant Temperature (ECT) Sensor 4.3L


Object Number: 235186  Size: MF
(1)Bank 1 Cylinder Head
(2)Engine Coolant Temperature (ECT) Sensor