My 1999 Amijo is doing the same thing my car guy said it is the starter computer chip. I am on the hunt for one right now so if anyone has info on where to find this part and where it is located please let me know. My email address is Cynthia_Chavez001@yahoo.com
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This is most likely the Anti Theft Security system shutting down the starter. Gm vehicles have had this problem since the 80's. Your key is not just a key, it also has a chip in the shaft or a transponder in the head. This Communicates with the ignition/ lock cylinder. This then communicates with the TDM (Theft Deterrent Module) which then ALLOWS the ignition to start the vehicle. Any communication break, and the vehicle wont start at the key/ignition. Check out this link for some more info and "do it yourself" solutions http://vatspasslockpasskeysecurityhelp.yolasite.com/
Most likely the starter wasnt the problem but rather the anti theft security that comes standard on these cars. It all stems from that chip in your key. When not funtioning properly, the SECURITY light comes on and the starter turns off to prevent theft due to not getting the correct signals to the computer. Look for the security light, if its there, then this is your problem. This site will help with info and DO IT YOURSELF solutions.
Had the same problem. Took it to local guy and he put it on the computer and found the wire running underneath the driver side floor mat had gone bad. Had to do with the security shut-off, which this wire affected. Replaced that wire, and the car has been running great ever since - happened 19 months ago.
Only thing I found out was have to take it to the dealer and have new security lock, computer, and key installed. Sux, bout $450
But I did read where someone said the chip was a resistor, and if you have the exact same resistance hooked up on the contacts? Then it will start. The key I was working with was 6M ohms If that helps you? Get a potentiometer and splice it into the two wires going to the key and adjust it and try it?
Chip in the key may lost contact with your module that receives info. Dealership will probably have to reprogram the key with your vehicle. Don't take long, but they charge $75+ to do the reprogram. We have a guy here that does this work and he does this for Ford, and all other major dealers. He charges $15 for spare cut key w/chip and dealer (him) charges $45 per key.
If you want to get a chip. you are best to deal with a reputable parts supply company and get a chip which is going to do what you want. There are guys that will burn you a chip, ask around some of the different local car and tuner clubs they can put you on to the local guys that burn chips. Just don't get too crazy as performance chips for a lot of hp, can put a lot of strain on a stock engine. Keep in mind that hp cost's money. Trying to cheat to get large hp can cost you a lot more than doing it right the first time, blocks are not cheap.
As far as bypassing the securtiy chip, we can't tell you that one as it would assist any user on here to steal your car (or others).
When you turn the key to attempt to start it do the dash lights dim or even go out ?