GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Sonoma Pickup - 2WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Power and Grounding Component Views
Figure 1:

Auxiliary Power Tray
Object Number: 357159 Size: LF
(1)Splice S268
(2)Auxiliary Power Outlet Harness
(3)C223
(4)IP Insulator
(5)Auxiliary Power Tray
(6)Auxiliary Power Outlet, RH
(7)Auxiliary Power Outlet, LH
Figure 2:

Battery MegaFuse and Air Injection (AIR) Jumper Harness
Object Number: 401632 Size: MF
(1)Radiator Support
(2)AIR Jumper Harness
(3)Battery MegaFuse
(4)Fuse Holder
(5)G100
(6)G112
(7)Battery Positive Cable
Figure 3:

Battery MegaFuse® Cable to Junction Block
Object Number: 354779 Size: LF
(1)Underhood Bussed Electrical Center (UBEC)
(2)Battery MegaFuse® Stud Cover
(3)Battery MegaFuse® Cable
Figure 4:

Battery Negative Cable and Ground (2.2 L Engine)
Object Number: 354782 Size: MF
(1)G102
(2)G103
(3)G107
Figure 5:

Body Wiring to Body Side Trim Panel
Object Number: 357314 Size: MF
(1)Load Leveling Air Direction Valve
(2)C471
(3)Body Side Trim
(4)S470
(5)Load Leveling Timer Relay
(6)Load Leveling Inflator Switch
(7)Auxiliary Power Outlet
Figure 6:

Cigar Lighter and Envoy
Object Number: 357158 Size: MF
(1)Ashtray
(2)Cigar Lighter Receptacle
(3)Cigar Lighter
(4)Auxiliary Power Outlet, RH (Envoy)
(5)Cigar Lighter (Envoy)
(6)Auxiliary Power Outlet, LH (Envoy)
Figure 7:

Body Relay Block Relays
Object Number: 238121 Size: LF
(1)Park Lamp Relay
(2)Courtesy Lamp Relay
(3)Retained Accessory Power Relay
(4)Power Seats Circuit Breaker
(5)Power Windows Circuit Breaker
(6)Inadvertent Power Relay
(7)Door Lock Relay
(8)Headlamp Ground Relay
(9)Driver Door Unlock Relay
(10)Door Unlock Relay
Figure 8:

Instrument Panel Fuse Block (Label)
Object Number: 389623 Size: MF
Figure 9:

Underhood Bussed Electrical Center (UBEC) Connector Location
Object Number: 354788 Size: LF
(1)Connector C2 (BLK)
(2)Connector C1 (LT GRY)
(3)Connector C5 (BLK)
(4)Connector C6 (LT GRY)
(5)Connector C3 (RED)
(6)Connector C4 (LT GRN)