How to Change the Ignition on a 2004 Impala LS

by Jamie Ratliff

The 2004 Chevrolet Impala uses an ignition switch to start the engine and control the power to many accessories. The switch controls power to the windows, the lights and the radio. The ignition switch is a separate unit from the ignition cylinder, so you do not need to remove the cylinder to replace the switch. Replacing the ignition switch is a project appropriate for even a novice mechanic and the procedure does not require any special tools.

Open the hood and disconnect the negative battery cable with an adjustable wrench. Wait a few minutes before starting work to allow any current to dissipate. Set the parking brake.

Tilt the steering wheel down to the lowest position. Move the gear shift lever to first gear. Leave the key in the ignition. Remove the lower under dash panel plastic clips and screws with a screwdriver. Lift the lower panel upward and remove the upper clips. Disconnect any electrical connections and remove the lower trim panel from the work area. Move the gear shift lever to the Park position and turn the key off.

Remove the bolts from the knee bolster plate with a socket wrench and remove the plate from the work area. Remove the two ignition switch bolts using a socket wrench. Disconnect the electrical connector and remove the ignition switch.

Install the new ignition switch using the retaining bolts and tighten with a socket wrench. Connect the electrical connector. Install the knee bolster plate and bolts using a socket wrench. Turn the ignition on and move the gear lever to first gear.

Connect any electrical connections to the lower trim panel. Install the lower trim panel using the upper clips. Install the bottom screws with a screwdriver and insert the plastic clips. Shift the gear lever into Park and return the steering wheel to its normal operating position. Connect the negative battery cable with an adjustable wrench and close the hood. Release the parking brake. Start the engine to make sure the new ignition switch is operating properly.

Warning

  • close Always disconnect the negative battery cable when working in the vicinity of air bags.

Items you will need

References

About the Author

Jamie Ratliff has been writing since 2002, primarily in the information technology and small-business fields. He has written for "Victoria Business Magazine," a regional magazine with special focus on local small-business news and tips.

Photo Credits

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