Ok so it's going to be expensive

 

Anyone figure anything out yet? I replaced my rke module and STILL nothing. Goes into programming mode with no problem but still won't program.

 

I have the right codes in my glove box for keyless entry but I can’t enter programming mode and the symptoms of a bad BCM seem far worse than just not being able to gain access to keyless entry. Are you positive it’s the BCM because I don’t want to spend $200 on something i don’t need to

 

Did anyone ever get this solved? I have a 2000 Silverado LT and today using the high beam arm I finally got my new fobs to program but right after exiting...NOTHING! 😫

 

I can enter programming mode no problem. But no remote I get to try will actually link up with my truck 😒

 

I used the highbeam to do this aswell. But the problem is when you hold the unlock and lock button to program the fob the locks cycle automatically. The fob does nothing in this situation it's just automatically doing it.

 

(I have a 02 Silverado , I tried to cycle while holding unlock button and turning key three times it seems to try but it’s week yet the door locks work fine when you Push the buttons, yet when I hold in the high beams and turn key like suggested it cycles strong but cannot get key to program in, I also pulled the fuses and set for an hour like suggested any help guys?

 



 

use your high beam lever and let the locks cycle, then follow the steps using the unlock button. It worked for me

 

As it turns out, this fine June 30th of 2022, I needed to program my fob to ensure the PCM wasn't derping with the fuel control module/black magic/demon sacrifices/usual chevy chicanery. Worked perfectly, and my passenger side window/lock control module only unlocks for some reason. After the reprogram, I did end up gaining lock and unlock on passenger side.
Like I was saying, typical Chevy weirdness abounds.
Hope this gets ya right.

now, if its a classic style, IE the GMT400/last of the square bodies, pins 4 and 8 in the OBD2 DLC connector require a jumper to enter programming mode.

I just reprogrammed my 1999 Silverado LS Z71 and the directions are as follows:
INSTRUCTION SHEETInstruction_Sheet_Key_Fobs_006
BEFORE YOU BEGIN:
1. Close all the vehicle doors.
PROGRAMMING INSTRUCTIONS:
1. Insert the ignition key into the ignition lock cylinder.
2. Press and hold the door unlock switch.
3. While holding the door lock switch in the unlock position, cycle the
ignition ON, OFF, ON, OFF.
4. Release the door unlock switch. The doors will lock and unlock to
confirm the program mode.
5. Press and hold the LOCK button and the UNLOCK button simulta-
neously on one transmitter. After a delay of approximately 15 sec-
onds, the doors will lock and unlock to confirm the programming of
that transmitter.
6. Repeat the previous step to program up to four transmitters.
7. Turn the ignition switch to the RUN position in order to exit the key-
less entry transmitter mode.
8. Operate the transmitter functions in order to verify correct system
operation.

Worth also noting that if the process DOES NOT work at all, you will sadly REQUIRE dealership programming.
The dealer so far as I know is the ONLY place to program keys if the vehicles been stolen or the chip doesnt match the PCM or whatnot.

also, the website I found my own programming instructions on is:
itstillruns.com 1999 chevy keyfob programming