GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Headlights/Daytime Running Lights (DRL) Schematics
Figure 1:

Cell 102: Underhood Bussed Electrical Center, DRL Lights
Object Number: 297940 Size: FS
Lighting Systems Components
Headlights/Daytime Running Lights (DRL) Circuit Description
Cell 102: Snowplow Option
Handling ESD Sensitive Parts Notice
Cell 10: Underhood Bussed Electrical Center, Secondary Air Injection Pump Relay
Cell 10: A/C Compressor Relay, Auxiliary Power Outlet
Cell 14: RH Fog Lamp, RH Park/Turn Lamp
Cell 14: RH Fog Lamp, RH Park/Turn Lamp
Figure 2:

Cell 102: Snowplow Option
Object Number: 297946 Size: FS
Lighting Systems Components
Headlights/Daytime Running Lights (DRL) Circuit Description
Cell 102: Underhood Bussed Electrical Center, DRL Lights
Handling ESD Sensitive Parts Notice
Cell 10: Underhood Bussed Electrical Center, Secondary Air Injection Pump Relay
Cell 10: A/C Compressor Relay, Auxiliary Power Outlet
Cell 14: RH Fog Lamp, RH Park/Turn Lamp
Cell 14: RH Fog Lamp, RH Park/Turn Lamp