Does your GM car or truck Radio display LOC and does not
turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles
used a theft system to lock the
radio when power is lost. This system was used from the ealy 1990's to
the early 2000's.
Instructions
:
- If your radio displays the word LOC, you can retrieve a
set
of factory numbers in the radio that enable you to get a backup unlock
code. If the radio says INOP, you will have to leave the key in the "ON"
position, or let the car run for at least 1 hour before you attempt any
unlock procedure. INOP means a secondary theft lock due to too many
false attempts to unlock the radio.
- Looking at the face of your GM Delco radio, hold down
the
preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for
approximately 10 seconds or until a set of 2 or 3 numbers comes up on
the display. Write the numbers down.
- Next press the AM / FM button. A new set of 3 numbers
will
now show. Write these numbers down. You will then need to call a 1-800
phone number with these numbers to get the unlock code. There are many
sites on the internet that can get it for you- for a small fee. Or, try
calling your local GM Dealer and ask for them to do it. Many times they
will do it for free. It only takes a minute.
- Once you have the unlock code, enter it by pressing the
MIN
button until the display shows the last 2 digits of the unlock code,
then press the HR button until the first 2 numbers or shown. Then press
the AM / FM button to enter the code. The radio will now display SEC,
and normal function is restored.
Also, its possible that you
need RESET your GM Radio; this is the procedure: While performing
maintenance on your car, you may
disconnect the radio from the battery in your GM vehicle. GM cars
contain Delco radios that are protected by Theftlock, which locks the
radio after it has been disconnected from a power source. Iit can only
be reset and unlocked with a car-specific security code. Identifying the
security code for your GM vehicle is the only way to reset the car
radio and disable the Theftlock protection device.
Instructions:
- Turn on your car. Your Delco radio will show "LOC" in
the LED
display.
- Press and hold down both the second and third preset
buttons.
Hold these buttons down for at least six seconds.
- Write down the two- or three-digit code that appears in
the
LED display.
- Press the AM/FM button on the radio.
- Write down the next two- or three-digit code that
appears in
the LED display. You should be left with either a four- or six-digit
number. Turn off your car.
- Call the Delco radio automated customer support line at
1-800-537-5140.
- Press "1" and then press the pound sign. The automated
voice
should respond "Invalid code, try again."
- Enter the number 139010 into your phone and then press
the
"*" sign.
- Enter the four- or six-digit number you wrote down from
Steps
3 and 5, and then press the "*" button.
- Write down the four-digit code given by the automated
voice.
- Turn on your car. Enter the Delco unlock code using the
procedure outlined by your GM owner's manual. Normally, the unlock code
is entered with the "HR" and "MN" buttons on your radio.
-
Press the AM/FM button. If you have entered the code
correctly, your LED display will read "SEC" and the radio will be
unlocked.
Also can check your Does your GM car or truck Radio display LOC and does not
turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles
used a theft system to lock the
radio when power is lost. This system was used from the ealy 1990's to
the early 2000's.
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});
});
Instructions
:
- If your radio displays the word LOC, you can retrieve a
set
of factory numbers in the radio that enable you to get a backup unlock
code. If the radio says INOP, you will have to leave the key in the "ON"
position, or let the car run for at least 1 hour before you attempt any
unlock procedure. INOP means a secondary theft lock due to too many
false attempts to unlock the radio.
- Looking at the face of your GM Delco radio, hold down
the
preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for
approximately 10 seconds or until a set of 2 or 3 numbers comes up on
the display. Write the numbers down.
- Next press the AM / FM button. A new set of 3 numbers
will
now show. Write these numbers down. You will then need to call a 1-800
phone number with these numbers to get the unlock code. There are many
sites on the internet that can get it for you- for a small fee. Or, try
calling your local GM Dealer and ask for them to do it. Many times they
will do it for free. It only takes a minute.
- Once you have the unlock code, enter it by pressing the
MIN
button until the display shows the last 2 digits of the unlock code,
then press the HR button until the first 2 numbers or shown. Then press
the AM / FM button to enter the code. The radio will now display SEC,
and normal function is restored.
Also, its possible that you
need RESET your GM Radio; this is the procedure: While performing
maintenance on your car, you may
disconnect the radio from the battery in your GM vehicle. GM cars
contain Delco radios that are protected by Theftlock, which locks the
radio after it has been disconnected from a power source. Iit can only
be reset and unlocked with a car-specific security code. Identifying the
security code for your GM vehicle is the only way to reset the car
radio and disable the Theftlock protection device.
jQuery('.intro .thumbnail').each(function(i,e){
jQuery(e).find('img').one('error',function(){ jQuery(e).remove();
});
});
Instructions:
- Turn on your car. Your Delco radio will show "LOC" in
the LED
display.
- Press and hold down both the second and third preset
buttons.
Hold these buttons down for at least six seconds.
- Write down the two- or three-digit code that appears in
the
LED display.
- Press the AM/FM button on the radio.
- Write down the next two- or three-digit code that
appears in
the LED display. You should be left with either a four- or six-digit
number. Turn off your car.
- Call the Delco radio automated customer support line at
1-800-537-5140.
- Press "1" and then press the pound sign. The automated
voice
should respond "Invalid code, try again."
- Enter the number 139010 into your phone and then press
the
"*" sign.
- Enter the four- or six-digit number you wrote down from
Steps
3 and 5, and then press the "*" button.
- Write down the four-digit code given by the automated
voice.
- Turn on your car. Enter the Delco unlock code using the
procedure outlined by your GM owner's manual. Normally, the unlock code
is entered with the "HR" and "MN" buttons on your radio.
-
Press the AM/FM button. If you have entered the code
correctly, your LED display will read "SEC" and the radio will be
unlocked.
Also can check
1999-Pontiac-Firebird-Owners-Manual (page 163),
there are several information about to lock and unlock.
Hope this help (remember comment and rated this).
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