Chevrolet Cobalt Service & Repair Manual: Passkey Module

On models equipped with the Passkey Theft Deterrent System, a new password must be learned by the PCM when the BCM/PCM has been replaced. When the PCM is replaced, the EEPROM calibration is flashed into the new PCM. Refer to latest GM Techline or equivalent information for PCM programming. After EEPROM calibration is complete, perform the following procedure:
1. Attempt to start vehicle, vehicle will stall.
2. Leave ignition On until Theft System warning lamp turns Off.
3. Turn ignition Off.
4. Attempt to start vehicle. Password is now learned and vehicle will now start.
    Wheel, Replace
    Removal Caution: Never use heat to loosen a tight wheel. This can shorten the life of wheel and damage wheel bearings. Wear approved safety glasses when performing the ...

    2007-10 Cobalt & G5
    w/2.0L & 2.4L Engines Warning: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel i ...

    See also:

    Chevrolet Cobalt Owners Manual. Rear Door Security Locks (Sedan)
    Security Lock Label shown The rear door security locks are located on the inside edge of each rear door. You must open the rear doors to access them. The label showing lock and unlock positions is located near the lock. To set the locks, do the following: 1. Insert the key into the secur ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


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