Key hole is jammed and lost the remote opener for my car and now the key button codes aren't working what can I do to get into my car there's only one key hole on a Lincoln navigator? No rear trunk key hole or passenger?

Use a can opener

Not sure of the year of your Tahoe but I can tell you the standard procedure to program your key for say like a 1999. First make sure your battery has a full charge. Next if you have any security related trouble codes stored in your computer, you will need to clear the codes either by clearing them with a scanner or disconnecting the battery for at least 10 minutes to clear the codes. The first step is to turn the key and just let it turn over quick but not enough to where the vehicle starts and shuts down again. Just kind of tap the key as if starting it so the starter turns the engine for a second. When you do that just release the key so it stays in the "Run" position. Lights will be on in the instrument cluster including the security light. The security light may flash on and off. Leave the key in the run position for 10 minutes. After 10 minutes the security light usually goes out but not in all cases. After 10 minutes in the run position, turn the key to the off position but do not remove the key. Wait 10 seconds and do the first step again (Tap again let key stay in run position for 10 minutes). You will need to do this 3 times totally about 30 minutes. On the 3rd time when the 10 minutes is up, turn off key, do not remove the key and then start the vehicle. This procedure should work to progam your key. If it doesn\'t you may have another problem with the security system. Let me know how it turns out and I hope there isn\'t another problem and the computer just lost the transponder code. there is a security relay/module that sometimes goes bad in those Tahoes but try programming the keys first. If that doesn\'t work and you need further help as far as that relay/module & to let me know how it turned out,

I would check the owners manual or with Cadillac - its possible the remotes lost part of the signal and need to be reset. It sounds like the receiver is not getting a signal from them by using that button.
Could be the receiver too.

your key has lost its program it just means your key is on its last leg just go to the bmw dealership they can turn the key back on for you it takes about 5min or less they should not charge you---btw you do not replace key batteries for the bmw they are rechargeble thru the ignition you just have to buy another key from the dealership when it finally calls it quits...note bmw north amercia only authorizes 10 keys to be issued per vin number if a car reaches this limit you can not get a key from the dealer ever....

It will not unlock the door the first time you push the button. This only registers the key fob ID into the computer. When you press the button on the key fob, press it only once and wait for the hazzard lights to flash twice again. Then open the driver's door. The key fob will not become active until you open the driver's door.

If your hazzard lights do not flash after you press the button on the key fob, there is most likely a problem with the key fob. Either it is not the correct key fob for your vehicle, or the battery is not in correctly or the key fob is defective.

The only other advice I can give you is to have it programmed with a scan tool. This way, the scan tool can verify that the computer in your vehicle is receiving the signal from the key fob.

It can be done either way, but if the "no scanner" way does not work, the rest of the system should be checked for possible problems.

Here are the instructions from the factory manual. They must be followed exactly.
2004 ES330
1. Driver's door open, all other doors closed, key removed from ignition switch.
Within 5 seconds:
Insert and remove the key from the ignition switch twice.

2. Within 40 seconds:
Close and open driver's door twice.
Insert and remove the key from the ignition switch.

3. Within 40 seconds:
Close and open driver's door twice.
Insert the key into the ignition switch and close the driver's door.

4. Switch ignition ON and OFF:
A. Once to program a key remote transmitter code whilst retaining the original codes.
B. Twice to program a key remote transmitter code whilst erasing the original codes.
C. Three times to check how many key remote transmitters are currently registered.
D. Five times to erase all registered codes.

5. Remove key from ignition switch. System should now lock and unlock vehicle
once, twice or five times depending which mode has been selected. One to four
times, slowly, to indicate number of key remote transmitters registered.

6. Within 40 seconds:
Press and hold LOCK and UNLOCK buttons simultaneously for 1.5 seconds.
Within 3 seconds: Press any key remote transmitter button.

System should now lock and unlock vehicle once to confirm registration or twice
to indicate registration has failed.

7. Within 40 seconds:
To program additional remotes repeat step 60 now on each additional
remote you want programmed.
8. To exit programming mode open driver's door or insert key into ignition.
9. Step out of car with remote(s) in hand and test remote(s).

Assuming that you mean that when you push a button on the key fob, nothing happens, you most likely need to replace the battery in the fob. If you aren't comfortable doing this yourself, you can take it to a key shop or the dealer.

To carry out this procedure you need to have one working key and one key which requires programming. It may help sometimes to hold the key close to the rear view mirror as this is where the sensor is located in most models. 1. With both keys, get in the car and close all windows and doors. 2. Put working key into the ignition and turn to position 1 (the accessories should turn on) (try also position 2) 3. Turn the key back to position 0 and take the key out of the ignition. 4. Using the working key, hold down the unlock button, press the BMW logo (lock button) 3 times, and release the unlock button. Doors should lock and unlock. 5. With the new key, hold down the unlock button and press the BMW logo (lock button) 3 times and let go of the unlock button. Doors should lock and unlock and you're done!! If not working try the following PREPARATION 1. Close all doors, trunk, hood and sunroof. 2. The security system must be in 'disarm' mode. The key must be removed from the ignition key slot. ENTER CODE LEARNING MODE 3. Open trunk and leave it opened. 4. Open the drivers door and sit in the drivers seat. 5. Close the drivers door. 6. Cycle the ignition switch 5 times between the 'OFF' position and position 2,(ignition 'ON', all dash warning lamps will illuminate). The red status LED will illuminate continuously, and the siren will 'chirp' once, to indicate that the code-learning mode has been initiated. ?Do No start the engine.? The Ignition switch cycling in step #6 must be performed within 10 seconds. The sequence in steps #1-#6 must be performed within 45 seconds. REGISTER/DELETE ID CODE(S) 7. Open drivers door, (remain seated in the drivers seat) 8. Close the drivers door. 9. Press and release any button on the remote you wish to register in the system. The status LED will shut off momentarily to indicate that one code has been registered. 10. Repeat steps 7 thru 9 to register the three ID codes. It is possible for the system to memorize a total of 4 different ID codes. As a new code is initialized into the memory, the oldest code is automatically deleted. If you had lost your remotes and wished to delete the lost remote ID codes from the memory, you could initialize the ID codes from a newly purchased replacement transmitter four times thereby deleting the previous ID codes from the system memory. EXITING CODE - LEARNING MODE: 11. Open drivers door, and exit from the vehicle, leaving the door opened. 12. Close trunk. 13. Close drivers door. The LED will turn off and the siren will 'chirp twice. 14. The initialization procedure is now completed; Test all remotes to confirm operation. If this doent work your alarm/central lock needs to be reset

the frame on the drivers side door as you look down, there is a button the pops the trunk. However, if you cannot open it with the remote, it is not likely that this will work as it uses the same mechanism to open the latch. I would definitely unlock the doors with the key, go to the trunk and make sure the the lock is in the "unlocked state", ad press the button in, it should just open