Powertrain Control Module (PCM) & Fuse Block Underhood Component View

Fig 1: Engine Harness - Rear Of Engine Compartment (4.3L) Routing

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	S101
2	C109
3	Powertrain Control Module (PCM) C1, C2
4	Fuse Block Underhood - C6
5	Fuse Block Underhood - C1
6	Horn Assembly Connector
7	C100
8	C101
9	A/C Compressor Clutch Connector (C60)