How to program a Remote Starter Key FOB for 2008 Grand Prix

Remove key from ignition switch.
Close all doors.
Open drivers door
Insert key and turn to ON position and within 10 seconds turn key off and remove key.
Within 20 seconds Close and open drivers door 3 times.
Insert key and turn to ON position and within 10 seconds turn key off and remove key.
Locks should now lock and unlock automatically to confirm you have entered programming mode.
Press the UNLOCK button on remote and locks should cycle to confirm programming.
Repeat step 8 on each additional remote.
Exit vehicle with keys and remote, close door test remote(s).
And I personally suggest you find a professional key fob installer in your area. he will help you properly
Thaks

There are several methods of doing this - but your 2003 requires that you either go to the dealer for them to add a FOB with special equipment (ask if they'll do it for free - can't hurt). If you have time to kill, you can do it yourself with Method 3 as described and found at:

Key Fob Reprogramming General Cadillac Forums

Method 3 - Key Fob Auto Learn


This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key.

Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1.
Do not place any known good key fobs in the vicinity of the vehicle when programming with Method 3. If the RCDLR recognizes a known good key fob during Method 3 programming, the programming mode will resort to Method 1.


The vehicle must be OFF.
Place the replacement key fob in the console pocket with the buttons facing forward.
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time.
When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
Repeat steps 5-7 two more times, for a total of 30 minutes.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2.
Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.

Good luck!

Sounds like a battery issue. First have battery checked on car. If that checks ok then check battery in your fob. If that checks ok then check for good continuity of your battery cables.

Hey Lisa,
You are going to have to take the car and the key fobs to the dealership .
They will need all of the fobs , as they are all going to need to be reprogramed at once ;
The fob on an 07 Pontiac only can be programed using a diagnostic scan tool .
They will connect the scan tool to the vehicle.
Turn key to on position.
Select 1 body,
then select special functions
then select program key fob,
select the number of key fobs you want programed.
Press and hold the lock and unlock key simultaneously for about 15 seconds until the power locks cycle to confirm the remote is programed.

Hey Lisa,
You are going to have to take the car and the key fobs to the dealership .
They will need all of the fobs , as they are all going to need to be reprogramed at once ;
The fob on an 07 Pontiac only can be programed using a diagnostic scan tool .
They will connect the scan tool to the vehicle.
Turn key to on position.
Select 1 body,
then select special functions
then select program key fob,
select the number of key fobs you want programed.
Press and hold the lock and unlock key simultaneously for about 15 seconds until the power locks cycle to confirm the remote is programed.

There are 4 methods for programming key fobs. Up to 4 key fobs may be programmed to the remote control door lock receiver (RCDLR). Each programmed key fob is given a position of #1-#4 in the RCDLR memory.
Method 1 - Key Fob Quick Learn This procedure will add key fobs. Fobs will be numbered in sequence based on when they are programmed; if 2 fobs are currently programmed to the RCDLR, a fob programmed using this method will be numbered as Fob 3. This procedure requires that you have a known good key fob, a replacement key fob, and the vehicles mechanical key.

Important: This procedure is not available when the maximum number of fobs (4) have been programmed. If 4 key fobs are programmed to this RCDLR and this method is attempted, the driver information center (DIC) will display MAX FOBS LEARNED and the programming procedure will exit. Method 4 must be used in this instance.


The vehicle must be OFF.
Place a known key fob within the interior of the vehicle.
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds.
The DIC will display a message: READY FOR FOB X (X = fob 2, 3, or 4).
Place the replacement key fob in the console fob pocket with the buttons facing forward.
A beep will occur and the DIC will display: READY FOR FOB X (X = fob 3 or 4) or MAX FOBS LEARNED.
If programming additional key fobs, repeat steps 5 and 6, or press the OFF/ACC portion of the ignition switch to exit programming mode.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.


Method 2 - Key Fob Slot Programming

This procedure will add or replace a key fob. Method 2 allows you to choose which location (slot) the unprogrammed fob will be learned to. If you are replacing a key fob, this method will erase the previously known key fob programmed to that particular slot. This procedure requires that you have a known good key fob, a replacement key fob, the vehicle mechanical key, and a scan tool.

Important: This procedure is not available when the maximum number of fobs (4) have been programmed. If 4 key fobs are programmed to this RCDLR and this method is attempted, the DIC will display MAX FOBS LEARNED and the programming procedure will exit. Method 4 must be used in this instance.


The vehicle must be OFF.
Place a known key fob within the interior of the vehicle.
Install a scan tool.
Use the scan tool, to access the following:
• Vehicle Control Systems

• Computer/Integrating Systems

• Module Replacement/Setup

• RCDLR

• Program Key Fobs

Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds.
Select Fob X (X = 1, 2, 3, or 4) on the scan tool. This will be the slot you wish to program to.
Place the replacement key fob in the console pocket with the buttons facing forward. A beep will occur indicating programming completion. The previously known fob is now erased.
If programming additional key fobs, repeat steps 4-8, or press the OFF/ACC portion of the ignition switch to exit programming.
Remove the scan tool.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.


Method 3 - Key Fob Auto Learn

This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key.

Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1.
Do not place any known good key fobs in the vicinity of the vehicle when programming with Method 3. If the RCDLR recognizes a known good key fob during Method 3 programming, the programming mode will resort to Method 1.


The vehicle must be OFF.
Place the replacement key fob in the console pocket with the buttons facing forward.
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time.
When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
Repeat steps 5-7 two more times, for a total of 30 minutes.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2.
Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.


Method 4 - Service Programming System Fob Programming

This procedure is a 10-minute relearn procedure using the Techline Terminal with SPS software. Once the 10-minute timer has expired, the fobs can be programmed similar to Method 2 using slot programming. A scan tool, Techline Terminal, and a replacement key fob are required to perform this procedure.

Place the vehicle in the Vehicle On, Engine Off mode.
Connect a scan tool to the vehicle.
Insure that all power consuming devices are turned OFF on the vehicle.
With a scan tool, select Request Info under Service Programming System and follow the scan tool on-screen instructions.
Disconnect the scan tool from the vehicle and connect the scan tool to a Techline Terminal with the current Service Programming System (SPS) software.
Turn the vehicle OFF.
On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions. Ensure the correct programming procedure is selected based on component being replaced or programmed. See Important above.
Disconnect the scan tool from the Techline Terminal and re-connect the scan tool to the vehicle.
With a scan tool, select Program ECU under Service Programming System.
At this point the scan tool must remain connected for the duration of the 10 minute relearn procedure.
When the 10 minute relearn procedure has completed, use the scan tool to access the following:
• Vehicle Control Systems

• Computer/Integrating Systems

• Module Replacement/Setup

• RCDLR

• Program Key Fobs

Select Fob X (X = 1, 2, 3, or 4) on the scan tool. This will be the slot you wish to program to.
Place the replacement key fob in the console pocket with the buttons facing forward. A beep will occur indicating programming completion. The previously known fob is now erased.
If programming additional key fobs, repeat steps 12-13, or press the OFF/ACC portion of the ignition switch to exit programming.
Remove the scan tool.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.

I have the same problem with my 2008 Grand Prix - replaced the batteries in both key fobs - they worked for a few days and quit working. Remote start does not work and both of the cigarette lighter chargers do not work either. I have recieved a "charging system failure" message on the readout screen as well. I have checked with 2 different mechanics and they are not sure what it is. Any help would be appreciated. Thanks!

Hold down the the lock and unlock buttons on the remote while by the vehicle for about 10 seconds this should reset the key fob.The locks may cycle but should correct the issue.

Key Fob Auto Learn
This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key.

Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1.
Do not place any known good key fobs in the vicinity of the vehicle when programming. 

The vehicle must be OFF. 
Place the replacement key fob in the console pocket with the buttons facing forward. 
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. 

The DIC will display a message: OFF/ACC TO LEARN. 
Press the OFF/ACC portion of the ignition button. 
The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time. 
When the counter reaches 0, DIC will display OFF/ACC TO LEARN. 
Repeat steps 5-7 two more times, for a total of 30 minutes. 
The DIC will display a message: OFF/ACC TO LEARN. 
Press the OFF/ACC portion of the ignition button. 
A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2. 
Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode. 
If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode. 
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation. 

Good luck and hope this help's keep me posted, there are 3 other methods and the 5th method is a tech 2 scan tool that the dealer uses but this should work on your year of cadillac. 

The rke on 06 pontiac only can be programed using a diagnostic scan tool or Tech 2.
Conect the scan tool to the vehicle. turn key to on position.
Select 1 body, 2 them select special funtions
3 slect program key fob,
4 select the number of key fob you want to program.
5 Press and hold the lock and unlock key simultaneous. about 15 seconds
The power lock cycle confirm the remote is programed.