Key Fob randomly just quit working today...

[wade]

tested the fob battery, it is good, 3v.

Is there some fuse or something to check?

I have an 03 Denali

 

[NathanJax]

Do you have another fob? Does it work?

Check the solder points in the remote. Mine came undone and had to be re-soldered.

Try reprogramming it...

Connecting a new Keyless Remote

1. Close all vehicle doors
2. Insert the key into the ignition
3. Hold down the power UNLOCK button on the driver’s door panel-continue to hold down until instructed to release in step 9
4. Perform steps 5 through 8 in fairly rapid succession
5. Turn the ignition switch to the ON position (as far as you can go without starting the engine)
6. Turn the ignition switch to the OFF position
7. Turn the ignition switch to the ON position
8. Turn the ignition switch to the OFF position
9. Release the power unlock button on the door panel. The vehicle will lock and unlock the doors automatically.
10. Hold down the LOCK and UNLOCK buttons on the transmitter simultaneously until the door locks and unlocks. (This step may take up to 30 seconds)
11. Repeat step 10 NOW for each additional transmitter (including any existing transmitters)
12. Turn the ignition switch to the ON position in order to exit the transmitter programming mode.

 

[wade]

thanks. i did it and the first time, after I released the fob, it locked and unlocked like said, but still didnt work.

i went though the steps again, and that time it worked, yay!

i wonder why i quit working in the first place

 

[WoldD90]

Great information, thanks for posting it.

 

[BlizzardX23]

mine is broken...it hardly ever unlocks anymore...I've replaced the battery twice...I have to keep hitting the button (I hit it in different positions and different pressure to see if it works)...still nothing...sometimes it works, most of the time, it doesnt....I usually use my key to unlock the truck (things people dont think about when shaving door handles off on their daily driver)...I'll get a new remote sooner or later...maybe if I get an alarm put on the truck

 

[HunterZ71]

mine does the exact same as blizzards...