Engine Electrical Component Views. GMC Truck GMC C-Series Medium Duty Truck B7 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Engine 🢒 Engine Controls - 7.4L 🢒 Engine Electrical Component Views

Figure 1:


(1)	Distributor Ignition (DI) Control Module C2 (2 cavities)
(2)	Distributor Ignition (DI) Control Module C1 (4 cavities)
(3)	Distributor
(4)	Oxygen (O2) Sensor
(5)	Engine Oil Pressure Gauge Sensor and Fuel Pump Switch
(6)	Ignition Coil C2 (2 cavities)
(7)	Ignition Coil C1 (2 cavities)

Figure 2:


(1)	Ether Injector Control Valve

Figure 3:


(1)	Relay Center
(2)	Vehicle Speed Sensor (VSS) Buffer
(3)	Fuse Block 2
(4)	Fuse Block 1
(5)	IP Fuse Block/Mini-Relay Center
(6)	Flasher/Relay Center, Position 3
(7)	Flasher/Relay Center, Position 2, Exhaust Brake Relay
(8)	Flasher/Relay Center
(9)	Flasher/Relay Center, Position 1

Figure 4:


(1)	Ether Injector Control Valve
(2)	Air Intake Heater Relay C1 (ring terminal)
(3)	Air Intake Heater Relay
(4)	Air Intake Heater Relay C2 (2 cavities)
(5)	Ether Injector Sensor

Figure 5:


(1)	IP Lamps Dimmer Switch
(2)	Instrument Cluster
(3)	Exhaust Brake Clutch Switch Jumper Plug
(4)	Exhaust Brake Clutch Switch
(5)	Upfitter Connector (23 cavities)
(6)	Upfitter Connector Jumper (23 cavities)
(7)	Upfitter IP (+) Junction Block
(8)	Daytime Running Lamp (DRL) Control Module
(9)	Driver Information Center
(10)	Headlamps Switch

Figure 6:

Figure 7:

Figure 8:

Figure 9:


(1)	Starter Solenoid
(2)	Starter BATT Terminal
(3)	Starter SW Terminal
(4)	Starter Solenoid C4 (ring terminal)
(5)	Starter Solenoid C2 (ring terminal)
(6)	Starter Motor
(7)	Positive Battery Cable

Figure 10:

Figure 11:


(1)	Starter Solenoid
(2)	Starter Motor
(3)	Starter SW Terminal
(4)	Starter BATT Terminal
(5)	Starter Solenoid C1 (ring terminal)
(6)	Starter Solenoid C4 (ring terminal)
(7)	Starter Solenoid C2 (ring terminal)
(8)	Fusible Link M
(9)	Positive Battery Cable

Figure 12:


(1)	Starter Motor
(2)	Starter Solenoid
(3)	Positive Battery Cable
(4)	Starter "BATT" Terminal
(5)	Starter Solenoid C1 (ring terminal)
(6)	Starter Solenoid C2 (ring terminal)
(7)	Engine Harness
(8)	Starter Solenoid C4 (ring terminal)
(9)	Starter "SW" Terminal