Security

[coop]

I've tried searching the forum but couldnt find anything. My dad just got a 99 Silverado Z71. It doesnt have a key fob so he has to unlock it with the key. Whenever he locks the truck from the inside and opens it with the key, the alarm goes off. The only way to stop it is to crank the truck. Is there any way to disable this as it is very annoying?!

 

-coop

[mcreyaufmiller]

I've tried searching the forum but couldnt find anything. My dad just got a 99 Silverado Z71.  It doesnt have a key fob so he has to unlock it with the key.  Whenever he locks the truck from the inside and opens it with the key, the alarm goes off. The only way to stop it is to crank the truck. Is there any way to disable this as it is very annoying?!

 

-coop

 

<{POST_SNAPBACK}>

 

 

Go to E-bay, you can get a new fob for pretty cheap with programming instructions.

[coop]

if he gets a new fob, when he unlocks the doors, will the alarm still go off? Also, should unlocking the doors with the key set off the alarm?

-coop

[mcreyaufmiller]

if it is an aftermarket alarm system, yes, keying in will set off the alarm. I am not sure about the factory unit. If he has the factory set-up and he gets new fobs, then yes, when he unlocks the doors, the alarm will shut off.

[coop]

its the factory alarm. it just seems odd that using the key to unlock the door would set off the alarm. anyone else know about the factory alarm? any help appreciated. thanks mcreyaufmiller

 

-coop

[GM-Tech]

Is there any way to disable this as it is very annoying?!

 

Tell him not to push the power lock button to lock the doors as he gets out. If you manually lock the door (use your hand to flip the lever) the content theft deterrant (alarm) won't arm.

 

But, are you sure this is factory content theft deterrant? There's a switch in the door lock that shuts off the CTD if the door is opened with the key, same as if you used a remote. So it's either not factory or that switch is bad.

[coop]

im pretty sure that its the factory alarm. if i like at the codes in the glove box compartment, will it have the alarm listed in it? and if so, what is the code? also, what is the part number to the switch in the door lock? i appreciate all of the help!

 

-coop

[GM-Tech]

im pretty sure that its the factory alarm. if i like at the codes in the glove box compartment, will it have the alarm listed in it? and if so, what is the code? also, what is the part number to the switch in the door lock? i appreciate all of the help!

 

I don't know the option code for CTD off hand, but if you give me the full VIN, I can see the options on the truck. And I'm not a parts guy, so can't help ya there either. But here's a couple ways you might be able to tell if it is the factory CTD.

 

First, the factory alarm beeps the horn. Most aftermarket alarms have their own "siren" or whatever you want to call it. Most aftermarket alarms don't disarm simply by turning on the ignition, though some may. The factory one definitely disarms on key on.

 

Second, when you press the power lock button and close the door, does the "Security" light then blink for about 30 seconds? If it does, that's telling you the factory alarm is ready to arm, but you have those 30 seconds to get back in before it actually does.

[99silveradoz71]

Yes, I was going to mention what GM Tech did...re: the horn for the factory content theft. I know I have a 99 and an aftermarket alarm on mine. If I lock the truck using the power lock button inside and then use the alarm remote to unlock, the content alarm(horn) will sound. If I lock with the alarm remote and use the stock keyfob or key to unlock, the alarm(siren) will sound.

[coop]

GM Tech, yes when locking the door with the button, the security light does flash. i found the rpo code on here and checked the glove box compartment and the truck did come with keyless. to verify it, i held the unlock button and cycled the ignition on and off twice and the truck locked and unlocked on its own...i was told this is the method of programming a keyless entry to the truck. i appreciate all of the help!

 

99SilveradoZ71, it is the horn that goes off when the alarm is triggered. it is not an aftermarket siren.

 

again, thanks for all of the help!

 

-coop

[GM-Tech]

GM Tech, yes when locking the door with the button, the security light does flash.

 

Okay, sounds like it has content theft deterrant. By the way, the fact that it has keyless entry does not automatically mean it has content theft deterrant that I'm aware of. It just means it has keyless entry.

 

Must be something wrong with the switch/wiring on the door lock that doesn't recognize that you're using a key to unlock the door. Go out and buy him a new remote and that'll solve the problem.

[coop]

thanks for the help! i ordered the keyless entry for him tonite.

 

-coop

[BCSierra]

I've tried searching the forum but couldnt find anything. My dad just got a 99 Silverado Z71.  It doesnt have a key fob so he has to unlock it with the key.  Whenever he locks the truck from the inside and opens it with the key, the alarm goes off. The only way to stop it is to crank the truck. Is there any way to disable this as it is very annoying?!

 

-coop

 

<{POST_SNAPBACK}>

 

 

 

I've got a spare key fob I bought off ebay before I realized you have to match the numbers on the back. I subsequently bought another correct one. Make sure if you buy a used one you get one with the matching numbers.

[coop]

i saw that. the fob i purchased for him said it will work on a 99 silverado. i surely hope so because when he bought the truck used, he didnt get a fob...just a key...so i didnt have a fob to match the numbers to.

 

-coop

[coop]

I got the keyless in today. programmed it and it worked perfectly! For future references, i got it from Chip Keys. It took four business days (including the day ordered) to arrive. I would recommend them to anyone looking for a key fob!

 

-coop