Chevrolet Cobalt Service & Repair Manual: Precautions

Air Bag Systems

Refer to "Air Bag System Precautions" on main menu selection for "Precautions."

Battery Ground Cable

Prior to service, disconnect battery ground cable and isolate as required.

Electrical Service

Because of the electronic system control and low system voltages, certain precautions must be taken to ensure accurate diagnosis and avoid system damage. Do not disconnect or connect electrical connectors with ignition On unless specifically instructed. Do not connect test equipment directly to the Engine Control Module (ECM), except where noted and never attempt to measure oxygen sensor output because the sensor will be damaged.

Fuel System Pressure Relief

1. Loosen fuel fill cap to relieve fuel tank vapor pressure.
2. Remove engine cover.
3. Remove fuel rail service port cap, then wrap a shop towel around fuel rail service port.
4. Depress (open) fuel rail test port valve using a small flat-bladed tool.
5. Remove shop towel from around fuel rail service port, and place in an approved gasoline container.
6. Install fuel rail service port cap and engine cover.
    Component Service
    Engine Control Module (ECM) 1. Retrieve percentage of remaining engine oil life using a scan tool, then record remaining engine oil life. 2. ...

    Diagnosis & Testing
    Accessing Diagnostic Trouble Codes Connect a suitably programmed scan tool to Diagnostic Link Connector (DLC) and follow manufacturer's instructions. Wiring Diagrams Refe ...

    See also:

    Chevrolet Cobalt Owners Manual. Heated Seats
    Your vehicle may have heated front seats. The switches are located on the instrument panel above the climate control system. Press the side of the switch with the double indicator lights to turn on the heated seat at the highest setting. Driver's Switch Shown, Passenger's Switch Similar ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


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