Myth Busters did this and proved it didn't work...not even using compressed air. I think they even referenced the same video.

Why does the car shake thing work?

 

Ok man think whateeeevvver you want.. and take a lock picking class while your at it. HEy maybe you can just pucker up and blow through the key hole hard enough it will cause the lock to pop up LOL

 

I have a strange setup on my 97 Vette it does not have the GM key fobs but an after market alarm fob that has an extra set of wires going inside the door panel which pops the locks.

Anyway my ignition key does not work in my doors and yesterday I was in the garage and I found an old ingnition key from my 99 Z28 Camaro which I had changed the BCM to make it keyless entry so I needed new keys with a different chip to match my BCM

This was the easiest way to do things as I'm in the UK and with a bit of fiddling it opened and locked the drivers door which is odd because it's only cut on one side and the Vette ignition key is cut on both sides!

I have 2 key fobs but I might just carry that Z28 key in my wallet as a percaution against locking my keys in.

My locks seem to have a mind of there own sometimes as I have disabled the auto lock feature on start up because I have to get back out of the car to manually close my garage door but even with the lock feature disabled it still locks me in sometimes when I switch off the ignition.

I wanted to buy a GM key fob with the passive lock feature but these are about a $100 a piece and I want two. But I have tried to enter the key training process and all I get is tire training when I follow the instructions.

Sorry to go on but it seems the Vettes door locks can be open just by trying any old GM keys you have lying around!

Yes I know you still won't be able to drive away with out a chipped key!

 

i have spare keys, seen it and tried on my 1996 sunfire

it worked, didnt do it on the vette since i dont have the tennis ball anymore

 

fsuforever's solution worked. Your the greatest!

Don,
Yep, your solution worked.. I bought a 1/8 brass rod and a short piece of brass tubing that the rod just barley slipped through and using a couple of cotton swaps dipped in Vaseline to keep from scratching the rubber, I slipped tubing between the glass and rubber, dropped the rod through the tube and it perfectly center punched the open button. Bingo! The darn thing takes two weeks to find a solution then it opened in 20 seconds.

Those locksmith guys were a lot of help. The first guy said," I'm kinda busy right now, but bring it on down and I'll take a look at it. (Huh?)
The fifth or sixth guy,and I swear this is either true or I made it up,ask "Are you locked in or out of the car?"

 

Did the car have remote operated locks or just a tumbler lock?

so i guess Some cars have pneumatic central locking systems that may be opened in this way. Not all cars have pneumatic central locking though.

"In the late 80's BMW or Mercedes don't remember which one (but can find out if want)designed a car were instead of using linkages it used a vacuum type devise to keep the lock down...but a Mexican gang found out that if you cut a hole in a tennis ball and smash it against the lock it would in fact disrupt the vacuum and essentially pop the lock..the car company found this out and did a recall to fix this problem mid year, so only some cars from that year actually work."

I guess there is some truth to it.. all apologies

 

The fob uses, basically, a semi-active RFID tag. If, on the earlier cars, you turn the "Passive" switch off, movement doesn't turn it on - you've got it turned off with a switch. If the Passive switch is on, movement (like you walking up to your car with the fob in your pocket/purse/hand) turns on the tag. It transmits for a relatively short range in Passive mode - 10 to 15 feet - so if you walk up to your car, the reader in the car receives the fob's signal and knows you're near. And unlocks the door.

In the owner's manual, it talks about being able to shake the car to wake up the fob, which causes it to transmit its code. Since it's definitely within 15 feet of the car, the reader says "Hey presto!" and unlocks the car. If you don't act fast, the tag in the fob shuts down, the car says to itself "my human is out of range" and the doors lock again.

Most of us turn Passive mode off, I suspect, because 1) the car locks and unlocks itself every time you walk past in your garage and 2) it provides a slight drain on the fob battery, so you have to change them more often.

If I understand aright, my friend's AMG Mercedes uses a different approach. The fob stays inactive until it receives a handshake from the car. At this point, the car knows he's walking up to it, but it stays locked. If he touches the door handle, the biometrics programmed into it by the dealer when he bought the car identifies him and unlocks the door. Same with the trunk. I'm not sure what they're using as a biometric signature, but it's fascinating. May be his electrical characteristics. Can't imagine fingerprints being used.

Anyway, the idea is that the car senses the fob, and thus the owner, and unlocks doors and turns on lights as programmed. If the fob hasn't moved in some number of seconds, it shuts down, and the car locks back up. Short version...

 

Apology accepted. CHEERS! I've seen a dog rid a tricycle, cats living with dogs, sooooooo, I try to keep an open mind about everything, no matter how ridiculous. But again, I too doubted the tennis ball trick, I just added the you.tube link showing the process and suggested it might be possible. Thanks for stepping up