GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 Data Link Communications Component Views
Figure 1:

Lower Left of the I/P
Object Number: 310145 Size: MF
(1)I/P Harness Connector
(2)Body Control Module (BCM) Connectors
(3)I/P Harness
(4)Fuse Block - Left I/P
(5)Data Link Connector (DLC)
(6)I/P Courtesy Lamp - Left
(7)I/P Courtesy Lamp Connector - Left
(8)Instrument Panel
(9)Left Windshield Pillar
Figure 2:

Center of the I/P
Object Number: 1629552 Size: MF
(1)SP250 (UQ7 w/U2K/U42 or U2K/U1S or U42/U1S or U2K/U42/U1S)
(2)HVAC Control Module Connectors
(3)I/P Harness
(4)SP207 (UQ3/UQ7 w/o Y91)
(5)I/P Extension Harness (UQ3/UQ7 w/o Y91)
(6)SP205
(7)SP207 (Y91)