GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Sonoma Pickup - 2WD 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Brake Warning System Schematics
Figure 1:

310 Series
Object Number: 545879 Size: FS
Hydraulic Brakes Components
Brake Warning System Circuit Description
325 Series
Ign ACC, RUN and RAP Bus Bar
AUX PWR, RDO BATT and HDLP SW Fuses
AUX PWR, RDO BATT and HDLP SW Fuses
Handling ESD Sensitive Parts Notice
Antilock Brake System Connector End Views
Handling ESD Sensitive Parts Notice
SP201 (4.3L)
G102 (Except Export)
G102 (Except Export)
G102 (Except Export)
Wiper/Washer System (Rear)
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Figure 2:

325 Series
Object Number: 545884 Size: FS
Hydraulic Brakes Components
Brake Warning System Circuit Description
310 Series
Ign ACC, RUN and RAP Bus Bar
AUX PWR, RDO BATT and HDLP SW Fuses
AUX PWR, RDO BATT and HDLP SW Fuses
Handling ESD Sensitive Parts Notice
Antilock Brake System Connector End Views
Handling ESD Sensitive Parts Notice
SP201 (2.2L)
G102 (Except Export)
G102 (Except Export)
G102 (Except Export)
Wiper/Washer System (Rear)
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice