GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Body and Accessories 🢒 Horns 🢒 Horn Component Views

Horn Component Views P42

Figure 1:

Forward Lamps Harness (Typical)
Object Number: 180064 Size: MF
(1)Lamp, Left Front Park and Turn Signal
(2)C203
(3)C200
(4)C202
(5)Horn, High Tone (F - Note)
(6)Horn, Low Tone (A - Note)
(7)Lamp, Left Front Sidemarker
(8)Headlamp, Left
(9)Headlamp, Right
(10)Lamp, Right Front Sidemarker
(11)Lamp, Right Front Park and Turn Signal
Figure 2:

IP Side of Engine Wiring -- All Engines (P42)
Object Number: 180085 Size: MF
(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

Horn Component Views P32

Figure 1:

Engine Wiring Harness to Dash and Steering Column
Object Number: 186174 Size: MF
(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
Figure 2:

Steering Wheel Horn Switch
Object Number: 440965 Size: SF
(1)Steering Wheel (Horn) Contact