GM Service Manual Online
For 1990-2009 cars only
Figure 1:

L18 Starting


Object Number: 650801  Size: FS
IGN A Fuse and Ignition Switch
Battery and Underhood Fuse Block
L18 Charging
Master Electrical Component List
Starting System Description and Operation
L18 Charging
L18 Charging
G105, L18, All except Ignition Coils
Figure 2:

L18 Charging


Object Number: 650802  Size: FS
Brake, Cruise, SEO TP-2, and Htr-A/C Fuses
L18 Starting
Gauges and Turn-B/U Fuses
IGN A Fuse and Ignition Switch
Oil Pres, Coolant Temp, and Volt Gauges, Check Gauges and Batt Lamp
Master Electrical Component List
Charging System Description and Operation
L18 Starting
Figure 3:

L65 Starting-Single Generator


Object Number: 650804  Size: FS
IGN A Fuse and Ignition Switch
Battery and Underhood Fuse Block
Master Electrical Component List
Starting System Description and Operation
L65 Starting (Dual Generators)
L65 Charging (Single Generator)
G105 and G106 (L65)
Figure 4:

L65 Starting-Dual Generators


Object Number: 650805  Size: FS
IGN A Fuse and Ignition Switch
Battery and Underhood Fuse Block
L65 Charging (Dual Generators)
Master Electrical Component List
Starting System Description and Operation
L65 Charging (Single Generator)
L65 Starting (Single Generator)
G105 and G106 (L65)
Figure 5:

L65 Charging--Single Generator


Object Number: 650807  Size: FS
L65 Starting (Single Generator)
L65 Starting (Single Generator)
L65 Starting (Single Generator)
Gauges and Turn-B/U Fuses
Fuel Gauge, Tachometer, and Speedometer
IGN A Fuse and Ignition Switch
Master Electrical Component List
Charging System Description and Operation
L65 Charging (Dual Generators)
L65 Starting (Dual Generators)
Figure 6:

L65 Charging--Dual Generators


Object Number: 650808  Size: FS
L65 Starting (Dual Generators)
L65 Starting (Dual Generators)
Gauges and Turn-B/U Fuses
Fuel Gauge, Tachometer, and Speedometer
Master Electrical Component List
IGN A Fuse and Ignition Switch
Charging System Description and Operation
L65 Charging (Single Generator)