The previous owner lost fob#2 so I bought a new one. When it was programmed using Method #1 which is the one mentioned in the drivers manual my new fob became fob#3.

Now I have fob#1 and fob#3 but I need fob#2 so I can have "Driver2's" preset setting. It looks like programming Method #3 might be the one I need to erase and reprogram my fobs correctly. However, I have read the procedure several times in the Service Manual and fine it to be a bit hard to understand.

Does it take 30 minutes per fob or are you suppose to replace the fob with another one after 10 minutes? Step #9 says repeat steps 5-7 but never says when to swap fobs.

Has anybody out there attempted Method #3 and if so maybe break it down into simple steps.

Thanks

 

My 2006 owner's manual only lists 2 methods and the step no. 9 you mentioned is different in my manual. However, I agree parts of the instructions are a little confusing.

If you trust your dealer, I'd suggest getting him to do the reprogramming of both fobs, especially so that someone who has the original fob #2 can't start your car.

 

I'm referring to the Service manual GMP/06-Y-3 Volume 3 of 3 page 11-147. It refers to 4 different methods some using Scan tools.

The dealer might be my only recourse.

 

Check your manual, and follow the longer procedure. You need to erase all FOBs from memory, then re-learn your existing FOB as well as the new one. What the manual does not tell you is that you need to have all working FOBs away from the vicinity of the car when initially programming. If the car does not detect any existing FOBs, it will erase all know FOBs, and then ask you to program FOB #1. This is the only way to train a new FOB to the #1 or #2 slots.

 

Here's the procedure from the 05 owner manual. Couple of things start the car and shut down before putting it into learn mode and make sure all know/recognized fobs are out of sensing range then follow the procedure, It take three 10 minute cycle for it to clear the known FOBs before programing FOB #1 see step #15 wait for second beep and for dic to display ready for fob #2 see step #16 continue procedure until all fob are programed and recognized. Good Luck

From the 2005 owner manual:

United States owners are permitted to match
a new transmitter to their vehicle when a recognized
transmitter is not available. The procedure will require
three ten minutes cycles to complete the matching
process. Do the following:\

Start car then go to step 1 I added this, some have had trouble with procedure if done after car has been sitting for awhile something to due with power down safety process after twenty minutes, just do it to be on safe side.

1. The vehicle must be off.

2. Place the new, unrecognized transmitter in the
glove box transmitter pocket with the buttons
facing towards the passenger’s side.

3. Go to the rear of the vehicle and insert the vehicle
key into the key cylinder located above the license
plate. See Hatch/Trunk on page 2-14 for more
information on the key cylinder.

4. Open the trunk.

5. Turn the key five times within five seconds.

6. The DIC message will display OFF-ACCESORY
TO LEARN

7. Press the ACC button (ignition switch).

8. The DIC will read WAIT 10 MINUTES and will
count down to zero, one minute at a time.

9. The DIC will display OFF-ACCESSORY TO
LEARN again.

10. Press the ACC button (ignition switch).

11. The DIC will read WAIT 10 MINUTES and will
count down to zero, one minute at a time.

12. The DIC will display OFF-ACCESSORY TO
LEARN again.

13. Press the ACC button (ignition switch).

14. The DIC will read WAIT 10 MINUTES and will
count down to zero, one minute at a time.

15. A beep will sound and the DIC will read READY
FOR FOB #1. At this time, all previously known
transmitters have been erased.

16. Once the transmitter is recognized and
programmed, a beep will sound and the DIC will
display READY FOR FOB #2.

If you have additional transmitters to program, take
transmitter 1 out of the transmitter pocket and place
transmitter 2 in the pocket. This can be done repeatedly
until up to four transmitters have be programmed.
The DIC will then display MAX # FOBS LEARNED and
will exit the programming mode.
When you are done programming transmitters, press
the ACC button (ignition switch).

 

So you don't have to put all the fobs, one at a time, in the slot in the glove box to erase the fobs? If I understand it correctly you simply put one fob in the glove box but it erases all of them. I guess what gets erased is just the code in the DIC computer. Is that correct?

 

The way I read it, part of what you said is correct. Programming fob #1 erases all known fobs. But I think you still have to program fob #2 by putting it in the glove box if you're going to be able to use a #2 fob.

 

After the three ten minute countdowns all previously recognized FOB information will be erased, see step 15, step 16, after awhile the there will be a beep and the DIC will display ready for fob #2, remover fob #1 and insert fob #2, continue programing, by removing and inserting fobs per the DIC instructions up to 4 fobs, when completed press the acc switch to exit programing. Let us know how you make out, good luck.