GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2001 🢒 Montana Ext. 🢒 Body and Accessories 🢒 Body Control System 🢒 Body Control System Schematics
Figure 1:

Ignition Input, Door Locks and Exterior Lamps Output
Object Number: 685531 Size: FS
BATT MAIN 1, CLUSTER BATT, RR PWR SCKT, PWR LOCK, RAP RELAY, CTSY LAMP, CTSY LAMP, ONSTAR, CIGAR DLC/APO FRT, and PWR MIRROR Fuses
IGN 1, SDM, T/SIG, CRUISE and PCM PASS KEY/CLUSTER Fuses
IGN 1, SDM, T/SIG, CRUISE and PCM PASS KEY/CLUSTER Fuses
IGN MAIN 2, BCM PRGRM, RR WPR/WSHR, MALL/CLUSTER and FRT/WPR/WSHR Fuses
IGN MAIN 2, BCM PRGRM, RR WPR/WSHR, MALL/CLUSTER and FRT/WPR/WSHR Fuses
EBCM, BATT MAIN 1, RADIO and PARK LP Fuses
EBCM, BATT MAIN 1, RADIO and PARK LP Fuses
Door Lock Actuators
G200 (1 of 3)
BCM, Instrument Cluster and Grounds
Body Control Module, Power and Ground
Seat Belt
Master Electrical Component List
Body Control System Description and Operation
Interior Lights On Request and Horn Control
Figure 2:

Interior Lights On Request and Horn Control
Object Number: 685536 Size: FS
Power, Ground, Class 2 Data Line and Gauges
Rear Object Sensor Control Module, Power and Ground
Door Lock Switches
Horns
VSS
Retained Accessory Power (RAP)
BCM and Power
Park Brake Indicator Switch and DRL Abient Light Sensor
Door Lock Switches
Key Cylinder Switches
Door Locks, Sliding Door Jamb Switches and Liftgate Door Lock
Taillamps, Side Markers and Park/Turnlamps
Windshield Header/Courtesy Reading Lamps
Master Electrical Component List
Body Control System Description and Operation
Ignition Input, Door Locks and Exterior Lamps Output