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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Engine 🢒 Engine Electrical 🢒 Starting and Charging Schematics
Figure 1:

Cell 30: Starting Circuit (Gasoline Engine)
Object Number: 386659 Size: FS
Engine Electrical Components
Starting System Circuit Description LP4/L21 Engines
Cell 30: Charging Circuit - Gasoline Engine
Handling ESD Sensitive Parts Notice
Figure 2:

Cell 30: Charging Circuit -- Gasoline Engine
Object Number: 394997 Size: FS
Engine Electrical Components
Charging System Circuit Description
Cell 30: Starting Circuit - Cat® Diesel Engine
Cell 30: Starting Circuit (Gasoline Engine)
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Cell 30: Starting Circuit -- Cat® Diesel Engine
Object Number: 394994 Size: FS
Engine Electrical Components
Starting System Circuit Description LG5 Engine
Cell 30: Starting Circuit and Starter - Cat® Diesel Engine
Cell 30: Charging Circuit - Gasoline Engine
Cell 30: Starting Circuit and Starter - Cat® Diesel Engine
Figure 4:

Cell 30: Starting Circuit and Starter -- Cat® Diesel Engine
Object Number: 394995 Size: FS
Engine Electrical Components
Starting System Circuit Description LG5 Engine
Cell 30: Charging Circuit - Cat® Diesel Engine
Cell 30: Starting Circuit - Cat® Diesel Engine
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 5:

Cell 30: Charging Circuit -- Cat® Diesel Engine
Object Number: 394996 Size: FS
Engine Electrical Components
Charging System Circuit Description
Cell 30: Starting Circuit - GM Diesel Engine
Cell 30: Starting Circuit and Starter - Cat® Diesel Engine
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 6:

Cell 30: Starting Circuit -- GM Diesel Engine
Object Number: 394999 Size: FS
Engine Electrical Components
Starting System Circuit Description LP4/L21 Engines
Cell 30: Charging Circuit - GM Diesel Engine
Cell 30: Charging Circuit - Cat® Diesel Engine
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 7:

Cell 30: Charging Circuit -- GM Diesel Engine
Object Number: 394998 Size: FS
Engine Electrical Components
Charging System Circuit Description
Cell 30: Starting Circuit - GM Diesel Engine
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice