Contents Wiring diagrams Section: Communication Devices All sections

Body Control Modules: Component Locations Chevrolet Blazer S15 facelift

COMPONENT LOCATIONS

ComponentLocation
Ambient Light SensorTop Of Instrument Panel, In Speaker Grille
Body Control ModuleBelow Right Side Of Instrument Panel
Door Ajar SwitchIn Respective Door
Electronic Brake Control ModuleInside Left Fender
Engine Coolant Level SwitchRight Front Corner Of Engine Compartment, Attached To Coolant Reservoir
Fuel Tank ModuleUnder Center Rear Of Vehicle
Ignition SwitchIn Steering Column
Body Relay BlockUnder Left End Of Instrument Panel
Instrument Panel Fuse BlockUnder Left End Of Instrument Panel
Parking Brake Switch ConnectorUnder Left Kick Panel
Powertrain Control ModuleRight Side Of Engine Compartment
Retained Accessory Power RelayBody Relay Block
Seat Belt SwitchUnder Driver's Seat
Sensing & Diagnostic ModuleUnder Passenger's Seat
Underhood Junction BlockLeft Side Of Engine Compartment
Washer Fluid Level SensorInside Left Fender

COMPONENT LOCATIONS

CAUTIONBCM Brown 24-pin connector C1 contains power and ground sources. When removing BCM, always disconnect connector C1 first before disconnecting connectors C2 and C3. When installing BCM, always reconnect connectors C2 and C3, then connector C1 last.
WARNINGIf Passlock® sensor, BCM or PCM are replaced, program new module, then perform passlock learn procedure. See appropriate ANTI-THEFT SYSTEMS article.

Note. To program BCM, a Techline Terminal is required.

  1. Connect scan tool. Select SERVICE PROGRAMMING from main menu. After entering vehicle information, choose REQUEST INFO soft key on scan tool. Disconnect scan tool from vehicle.
  2. Connect scan tool to Techline Terminal. Select SERVICE PROGRAMMING SYSTEM. Select TERMINAL TO SCAN TOOL PROGRAMMING method. Select DONE. Follow instructions on communications setup screen.
  3. Select PROGRAM BODY FUNCTION CONTROLLER. Select PROGRAM at SUMMARY screen. Techline Terminal will download information to scan tool. Disconnect scan tool from Techline Terminal.
  4. Connect scan tool to vehicle. Turn ignition switch to RUN position. Select SERVICE PROGRAMMING from MAIN MENU. Follow prompts on vehicle year and type. Press BODY FUNCTION CONTROLLER soft key on scan tool. BCM will be programmed with configuration file stored in scan tool.
  5. Program theft deterrent system, BCM and PCM using Techline equipment. Follow techline instructions. Verify BCM is operating properly.