Keypass fault wont let my 95 caprice classic start

Get a second ignition key, the one you are using is dirty or moisted, you need to turn on and off the car witha clean key, hapens to me once in a while.!!

what would cause 95 chevy caprice to not reverse, but change out in all other gears perfectly. how much will it cost to put transmition in 95 chevy caprice?

did you get a new key made without the chip? The car will not run without the chip in the key. Could be a bad chip in the key itself. Get a replacement where they sell keys with a key chip identifier.

Just guessing but is there a security system in htis car?
Being a 95 it may have a factory security, the key does it have a chip built in?
You can bypass and use a regular key,
if none of these apply check idle air,

Mine did the same thing. I had to replace the ignition switch and haven't had a problem since. The inside wears out and don't make a conection to the chip in your key.

IIt is usually the lock cylinder gone bad. If the chip tested good in the key, truthfully, this might be best left up to a dealer.

there is a micro chip inside the head of the igntion key, when you put the key in the igntion the sensor inside the steering colunm will read the resistance of the micro-chip. If there is a match the engine will start. If for some reason the sensor will not read the micro chip the system will think some is stealing the car. I would try another key 1st, if this persist, the module will need to be replaced. Start with a new key, its cheaper.
You'll need to go a GM store parts departement with the old key, drivers license & registration for the dealer to cut a new key.

it might be the chip in the key or the wires coming from the ignition going undr the dash an if u have a aftermarket alarm they could have done something worng

Put the key in turn it on don't start it wait 10mins turn the key off remove it waits 10 seconds repeat this 3 times this should help if not try this with another key if it still don't work your ignition switch ifs probably bad dealer must replace and reprogram new keys. I got this info from the emission wiz it helped me on 2 different cars

WELL I HAD THE SAME PROB. ON A 95 CHEVY CAPRICE.I REMOVED THE IGNITION AND THE WIRE WAS BROKE.WHEN U TURN THE KEY THE PASS KEY WIRE TURNS WITH THE IGNITION,WHAT A FAULTY DESIGN.ANY HOW BUY A NEW IGNITION AND KEY THAT SHOULD SOLVE THE PROB. GOOD LUCK