GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
1998
🢒
GMC P42 Commercial Chassis
🢒
Body and Accessories
🢒
Wiring Systems
🢒 Data Link Communications Component Views
Data Link Communications Component Views P42
Figure
1:
IP Side of Engine Wiring -- All Engines (P42)
(1)
Data Link Connector (DLC)
(2)
Headlamps Dimmer Switch
(3)
Brake Transmission Shift Interlock (BTSI) Solenoid
(4)
Brake Transmission Shift Interlock (BTSI) Relay
(5)
Horn Relay
(6)
Daytime Running Lamps (DRL) Relay
(7)
C210
(8)
C211
(9)
Torque Converter Clutch (TCC) and Stoplamps Switch
(10)
Ignition Switch
(11)
C1
(12)
C2
(13)
C1
(14)
C2
(15)
Turn Signal Switch Connector
(16)
Crank Fuse
Figure
2:
IP Side of Engine Wiring--Diesel--Forward View
(1)
Powertrain Control Module (EFI Diesel)/Transmission Control Module (MFI Diesel with Auto Trans)
(2)
Data Link Connector (DLC)
(3)
P100
(4)
Vehicle Speed Sensor (VSS) Calibrator
Data Link Communications Component Views P32
Figure
1:
Engine to Dash and Steering Column
(1)
Ignition Switch
(2)
Steering Column
(3)
Brake Transmission Shift Interlock (BTSI) Solenoid
(4)
Data Link Connector (DLC)
(5)
Hazard Lamps Flasher
(6)
P100
(7)
Fuel Pump Prime
(8)
C100
(9)
C207
(10)
C200
(11)
Windshield Wiper Pulse Control Module
Figure
2:
Engine Wiring Harness to Dash and Steering Column
(1)
Turn Signal Switch Connector
(2)
Headlamps Dimmer Switch
(3)
Data Link Connector (DLC)
(4)
Powertrain Control Module (Diesel)
(5)
Ignition Switch
(6)
Brake Transmission Shift Interlock (BTSI) Solenoid
(7)
Daytime Running Lamps (DRL) Relay
(7)
Daytime Running Lamps (DRL) Relay
(8)
Horn Relay
(8)
Horn Relay
(9)
Brake Transmission Shift Interlock (BTSI) Relay
(10)
Fan Control Relay