This information applies to 2005-07 Chevrolet Corvette and Cadillac STS, 2004-2007 Cadillac XLR.

Certain brands of cell phone chargers may produce electromagnetic interference (EMI) or radio frequency interference (RFI) that can disrupt the electrical systems within the vehicle. The concerns created by the use of these chargers may be intermittent and random. The concerns can be present with or without the phone connected to the charger. This condition usually occurs when using a non name-brand charger.

This interference can cause a no start condition with a "No Fobs Detected" message on the DIC.

Disconnect the cell phone charger from the vehicle and evaluate the customer concern. If the concern is corrected, advise the customer that OEM cell phone chargers, provided by the cell phone manufacturer, typically have additional filtering to eliminate this type of interference.

As more and more electronic devices are incorporated into or carried in vehicles, reports are increasing of remote keyless entry (RKE) systems with poor performance or unable to program.

A number of devices have been identified that can interfere with the RKE: cell phone cords plugged into power outlets without the phone present, wireless doorbell transmitters, garage door openers, TPM sensors, etc.

TIP: If an RKE system receives two transmissions from separate sources at the same time, it will ignore both.

You may be able to locate devices transmitting unwanted signals using the RKE key fob tester J-43241. Because the unwanted transmissions are the same frequency as the key fob, the LED on the tester will light when the tester is slowly swept near the device. Be sure to sweep around all storage areas in the vehicle and under instrument panel and seats.