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#PIC4696: Procedure To Unlock Family Radio With Theftlock - keywords audio deterrent display entertainment inoperative loc lock theft deterrent theftloc theft lock - (Nov 28, 2007)
This procedure will correct all RADIO THEFTLOCK concerns for the vehicles listed. Please read the following carefully! There are time limits associated with some of these steps. Therefore, if the directions are not followed properly, unnecessary wait time will occur. The mode the radio theft deterrent system is in will determine which steps to be followed.
The Theft lock logo will appear on the face plate of the radio to indicate this radio has the protection of Theft lock. The Pontiac, Buick, Chevrolet and light trucks will have an indicator light that blinks when the vehicle is off and this feature is activated. Oldsmobile radios do not have the light indicator. The feature is activated by the customer programming a code into the radio. Instructions are in the customer's owners manual. The procedures in this section explains how to operate the theft lock security system. This includes unlocking the radio, removing and entering customer's code, obtaining the radio display code, and changing the customer's code.
The theft lock theft deterrent feature in some models includes an LED indicator light that will blink when the ignition is off and the unit is in the secured state.
LOC: Means the radio is locked and there is a customer code stored in the radio.
InOP: Means too many wrong codes have been entered and the radio must be left powered up to 1 hour with battery and ignition applied before 3 more attempts can be made
SEC: Means there is a customer code stored, but the radio is unlocked
---: Means there is no customer code stored and the radio is unlocked
REP: Means the customer code has been entered once, and the radio now wants the code repeated to verify the code was entered correctly the first time.
After eight initial failed unlock attempts, the unit will be in a second level lock condition and become inoperative for over 1 hour. Any further code inputs during this hour (or depressing any buttons) will cause the display or indicate InOP for about 15 seconds before returning to LOC.
The unit will still be inoperative. To reset to the normal locked (LOC) condition, battery and ignition voltages must be continuously present for over 1 hour continuously. Do not attempt any radio entries or functions during this time-out period.
After the unit is brought back to the normal locked condition, the correct unlocking procedures can be followed. Following every three unsuccessful entries the unit will return to the inoperative state (InOP) for another 1-hour period.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed