key fob programming help

[nitro 750]

I have a 2004 gmc sierra Z71 need key fob programming info have new fob

[2002 Caddy]

Sure... here ya go:

Transmitter Programming

Important
Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.


Method 1 - No Tools Required, Program All Transmitters

Important
All transmitters which are to be recognized by the PDM must be programmed in a single programming sequence. When using this program method, all previously programmed transmitters will be erased upon the receipt of the programming signal from the first transmitter.

The order in which the transmitters are programmed will determine its numbering position within the PDM memory. The first transmitter programmed will be transmitter #1, and the second transmitter programmed will be transmitter #2. The number stamped on the transmitter case is for reference only; #2 can be programmed as #1, or vice versa. Additional unnumbered transmitters are also available.

1. Close all the vehicle doors.
2. Insert the ignition key into the ignition lock cylinder.
3. Press and hold the door unlock switch.
4. While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.
5. Release the door unlock switch. The doors will lock and unlock to confirm the program mode.
6. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of approximately 15 seconds, the doors will lock and unlock to confirm the programming of that transmitter.
7. Repeat the previous step to program up to 4 transmitters.
8. Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming mode.
9. Operate the transmitter functions in order to verify correct system operation.

Easy as that...

[nitro 750]

Thanks for the info caddy

[2002 Caddy]

No problem.

The link I PM'ed you is a complete set of manuals for all GM cars and trucks from 1998-2005. These are the same Service Manuals that the techs at the GM dealer use. These discs cover all GM vehicles from 1998 to 2005. 1998-2005 are Complete Service Manuals, Owners Manuals, and Technical Service Bulletins.

I bought my copy for something like $5 from a guy on eBay. Now you can download them for free.