My chevy impala 2008 radio has no sound. It is not locked as it displays different tuning frequencies. I get no sound at all from any of the speakers. I get no chime or alert sounds either. The turn signals work but no sound.the seat belt alert sound is missing too. The remote key locks

Question edited for clarity, and correct order of information and toss in a few CAPS where needed.
Question moved to model category.

All Impala are the same, only difference is bore and stroke for the extra capacity.

https://www.google.com/search?q=2008+chevy+impala+3.5+serpentine+belt+diagram

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Procedure:
1. Turn the ignition ON (The radio should display "LOC")
2. Hold down the Radio Presets 2 and 3 buttons for six seconds
3. The radio display changes from LOC to a three-digit number. Write this number down. You now have fifteen seconds to complete the next step.
4. Press the AM/FM button
5. The radio display changes to another three-digit number. Write this number to the right of the first one.
6. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05
7. Call 1-800-537-5140
8. Press 1 then # (pound). You'll hear "Invalid Code, try again"
9. Press 139010 or 106010 or 206010 or 202107 then # (pound). You will be asked to enter your four or six digit code followed by *
10. Enter the number from STEP 6 then *
11. Listen to the four-digit number and write it down. It will be repeated twice
12. Turn the ignition ON (The radio displays LOC)
13. Use the MN and HR buttons to enter the code from STEP 11
14. Press the AM/FM button. The radio display changes to "SEC". Your radio is now "un-locked" and usable.

Dealership Codes•139010
•106010
•206010
•202107
Troubleshooting
If you fail to enter the correct code eight times, the radio goes into INOP mode. You have to wait an hour with the ignnition on before the radio returns to LOC mode.

http://www.impalaforums.com/chevy-impala-8th-gen-discussion/270328-how-to-reset-gm-theft-lock-radios.html

you are going to have make and model ## of the car stereo, if GM
still go to have model ## off the back of stereo and what would be better is a part number would be very good.

www.freeproductmanual.com
www.infolink.com
www.wikipedia.org
----------------------------------------------------
schematics

www.eserviceinfo.com/equipment_type/schematics
www.free-schematic.blog.spot.com/
www.electronicshelponline.com/radio_wire_diagrams

other sites for help

www.manualsonline.com/radio_wiring_diagram
www.wikipedia.org/wiring diagram radio
www.alltheinternet.com/radio_wiring_diagrams

check this video:
https://www.youtube.com/watch?v=SmWczBBeLJw
How To Unlock 2002 2008 Chevrolet Theftlock Radio With Catchy Tune Bonus

What usually happens is the battery is dead. You buy a new battery, then you need a radio code for it to work. Drive to the dealership with the car and get the code.

Sounds like a major electrical issue. I would have it towed to the nearest Chevy dealer for diagnosis and repair.

For the Impala:

AM/FM Base Radio with a Single CD Player
This type of radio has a H (clock) button for setting the
time. You can set the time by following these steps:
1. Press the H button until the hour begins flashing on
display. Press this button a second time and the
minutes begin flashing on display.
2. While either the hour or the minutes are flashing,
turn the f (tune) knob, located on the upper right
side of the radio, clockwise or counterclockwise
to increase or decrease the time. Instead of using
the tune knob, you can also press the SEEK arrows,
\FWD (forward), orsREV (reverse) buttons
to adjust the time.
3. Press the H button again until the clock display
stops flashing to set the currently displayed time;
otherwise, the flashing stops after five seconds and
the current time displayed is automatically set.
To change the time default setting from 12 hour
to 24 hour, press the H button and then the
pushbutton located under the forward arrow label.
Once the times 12H and 24H are displayed, press the
pushbutton located under the desired option to
select the default. Press the H button again to apply
the selected default, or let the screen time out.
With Date Display
Single CD (MP3) Player
This type of radio has a H (clock) button for setting the
time and date.
To set the time and date, follow these instructions:
1. Turn the radio on.
2. Press theHbutton and the HR, MIN, MM, DD,
YYYY (hour, minute, month, day, and year) displays.
3. Press the pushbutton located under any one of the
labels that you want to change. Every time the
pushbutton is pressed again, the time or the date if
selected, increases by one.
• Another way to increase the time or date, is to
press the right SEEK arrow or\FWD button.
• To decrease, press the left SEEK arrow or
sREV button. You can also turn the f (tune)
knob, located on the upper right side of the radio,
to adjust the selected setting.

The date does not automatically display. To see the
date press the H (clock) button while the radio is
on. The date with display times out after a few seconds
and goes back to the normal radio and time display.

CHEVY IMPALA &
MONTE CARLO
On a Chevy Impala or Monte Carlo with indirect TPMS, a totally different reset procedure is required. You can use the light switch or radio to reset the system. With the light switch procedure, turn the ignition on (engine off), the turn the light switch from OFF to parking lamps three times within five seconds. With the radio technique, turn the ignition on (engine off). With the radio off, hold the DISP button until “SETTINGS” is displayed. Use the SEEK button to scroll down the menu until you see “TIRE MON.” Press the PREV or NEXT buttons until “RESET” is displayed. Then press the DISP button again. You should hear a chime and see “DONE” to indicate the TPMS system has been successfully reset. Use the SEEK button to scroll through the menu until “DONE” is shown, then press DISP once more to exit from the learn mode.

hello f_miragaya

I have same problem with a US made R350 in Germany.

Did you find any solution?

Thanks

TURN IGNITION KEY TO ON POSITION THEN BACK TO OFF 3 TIMES 3RD TIME LEAVE IT IN ON POSITON THEN DEPRESS GAS PETAL TO FLOOR 3 TIMES. TURN KEY OFF SHOULD BE RESET



On my 2005 impala you turn the ignition on and turn the radio off. Push down the tune nob until settings is displayed on the radio. Push the seek button until you see oil life. Push the next button on the radio until you see the word reset then push the tune nob again. this will reset the oil timer on the car and change oil light should turn off.


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