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

Lower Right Side of the Engine - Front (4.2L)


Object Number: 748826  Size: MF
(1)Engine Harness
(2)Engine Oil Pressure (EOP) Switch Connector
Figure 2:

I/P Cluster


Object Number: 749891  Size: MF
(1)Speedometer
(2)Engine Oil Pressure Gage
(3)Voltmeter
(4)Coolant Temperature Gage
(5)Fuel Gage
(6)Tachometer
Figure 3:

Steering Wheel and Column


Object Number: 856748  Size: LF
(1)Steering Wheel Control Switch Assembly - Upper Left (STW)
(2)Passlock Sensor Connector
(3)Ignition Key Alarm Switch
(4)Ignition Lock Cylinder Control Actuator
(5)Ignition Lock Cylinder Control Actuator Connector
(6)Ignition Switch
(7)Ignition Key Cylinder
(8)Steering Wheel Control Switch Assembly - Upper Right (STW)
(9)Horn Switch
(10)Steering Wheel Control Switch Assembly - Lower Right (STW)
(11)C277
(12)Steering Wheel Control Switch Assembly - Lower Left (STW)
(13)Turn Signal/Multifunction Switch