Chevrolet Cobalt Service & Repair Manual: Body Control System Diagnosis & Testing
Chevrolet Cobalt Service & Repair Manual / Electrical / Component Replacement / Body Control System Diagnosis & Testing
| The body control module (BCM) has a bussed electrical center integrated into the housing. Body control relays and fuses are installed directly on the BCM, which simplifies wiring and junction blocks on the vehicle. The body control system consists of the BCM and its associated controls. Battery positive voltage is provided to the BCM from IBCM BATT 1 fuse and the IBCM BATT 2 fuse in the underhood fuse block. The module grounds are wired to ground G201, G203 and G305. The BCM is wired to the GMLAN High speed serial data buss, and the GMLAN Low speed serial data buss, as well as discrete input and output terminals to control the functions of the vehicle's body. |
| A new body control module (BCM) must be programmed with the proper regular production option (RPO) configurations. The BCM stores the information regarding the vehicle options and if the BCM is not properly configured with the correct RPO codes the BCM will not control all of the features properly. The Tech 2 software will automatically prompt you with the various RPOs available for the vehicle. Ensure that the following conditions exist in order to prepare for BCM programming: This entire procedure has been reviewed before starting, the battery is fully charged, a CANdi module is installed between the vehicle and the scan tool, the ignition switch is in the ON position, the data link connector (DLC) is accessible and all disconnected modules and devices are reconnected before programming. |
| To setup a new replacement BCM select Vehicle Control Systems, then select the applicable options, then select Module Setup, then select Body Control Module, then select BCM Setup on the scan tool. After the setup procedure it is necessary to perform the Remote Start setup procedure, if equipped, and brake pedal position (BPP) Sensor Calibration procedure. If the BCM fails to accept the program, perform the following steps: Inspect all BCM connections and verify that the scan tool has the latest software version. |
Blower Motor, Replace
1.
Disconnect blower motor electrical
connectors.
2.
Remove sound insulator panels as required.
3.
Remove mo ...
Brake Fluid Level Warning Indicator Switch R&R
Refer to Fig. 1.
when performing the following procedure.
1.
Remove brake fluid indicator switch
connector.
2.
Remove br ...
See also:
Chevrolet Cobalt Owners Manual. New Vehicle Break-In
Notice: The vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
- Do not drive at any one constant speed,
fast or slow, for the first 500 miles (805 km).
Do not make full-throttle starts. Do not
exceed 5,000 engine rpm. Avoid
...
Chevrolet Cobalt Owners Manual
- In Brief
- Seats and Restraint System
- Features and Controls
- Instrument Panel
- Driving Your Vehicle
- Service and Appearance Care
- Maintenance Schedule
- Customer Assistance Information
Chevrolet Cobalt Service Manual
- Air Bags
- Air Conditioning & Heater
- Body & Frame
- Brakes
- Cooling System
- Driveline
- Electrical
- Electronic Stability Controls
- Engine Service
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