GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Engine 🢒 Engine Controls - 3.0L (L46) 🢒 Engine Controls Schematics
Figure 1:

Power, Ground, MIL, PCM and DLC
Object Number: 482875 Size: FS
Figure 2:

CMP, CKP and ICM
Object Number: 482877 Size: FS
Figure 3:

Fuel Level Sensors
Object Number: 482878 Size: FS
Figure 4:

Fuel Injectors
Object Number: 482879 Size: FS
Figure 5:

A/C Pressure Sensor, TP, MAP, ECT and IAT
Object Number: 482880 Size: FS
Figure 6:

HO2S, EGR and PCM (NF2 Only)
Object Number: 521585 Size: FS
Figure 7:

MAF and EVAP
Object Number: 482881 Size: FS
Figure 8:

IAC, Oil Level Switch and Oil Pressure Indicator
Object Number: 482882 Size: FS
Figure 9:

Generator, I/P and VSS
Object Number: 482883 Size: FS
Figure 10:

Park Neutral Position (PNP) Switch
Object Number: 482884 Size: FS
Figure 11:

Stop Lamp Switch and Automatic Transmission
Object Number: 482885 Size: FS
Figure 12:

HVAC and A/C Compressor Clutch Coil
Object Number: 482886 Size: FS
Figure 13:

RH and LH Cooling Fans
Object Number: 482887 Size: FS