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

L67 Engine


Object Number: 42648  Size: MF
(1)Fuel Injector Connector
(2)Engine Harness
(3)Idle Air Control Connector
(4)Mass Air Flow Connector
(5)EGR Valve Connector
(6)Throttle Position Sensor Connector
(7)Coolant Temperature Sensor Connector
Figure 2:

L36 Engine


Object Number: 43721  Size: MF
(1)Fuel Injector Connectors
(2)Engine Wiring Harness
(3)Idle Air Control Valve Connector
(4)Mass Air Flow Sensor Connector
(5)Throttle Position Sensor Connector
(6)A/C Compress Connector