GMC Repair: 2004 Chevy Silverado, key fobs, vehicle doors

Question
I actually have 2 questions. The 1st one being how do you reprogram the key fobs on the 2004 models I tried to do the reset for the 2003 it did not work so if you could give me year specific instructions I would be very grateful. The 2nd issue is the RPM Gauge it is not working at all and I have read the schematics backwards and forwards and have no idea what is making it not work, I appreciate any help you can give me in these two areas. thanks alot D.

Answer
Hi
1st....
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.


Close all the vehicle doors.
Insert the ignition key into the ignition lock cylinder.
Press and hold the door unlock switch.
While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.
Release the door unlock switch. The doors will lock and unlock to confirm the program mode.
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.
Repeat the previous step to program up to 4 transmitters.
Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming mode.
Operate the transmitter functions in order to verify correct system operation.
2nd.....
the tachometer data is transmitted to the ipc from the pcm. If you have access to a scan tool, observe the data and see if you have "engine speed". If so, the IPC is MOST LIKELY your fault. Depending on your mileage, there is a special policy for cluster replacement at your local GM dealership. I would take it in and have the gage sweep test done. If it fails they MAY replace the cluster for free or reduced rate.
I Hope this helps
Good Luck
God Bless
Pawl