Woody
Woody SuperDork
10/28/10 12:58 p.m.

A guy at work just went out to start his 96 Camaro (5.7, 5 speed). He said that he turned the key, dash lit up normally and when he tried to start it, everything went dead.

Now there is a very noticeable clicking nose coming from under the dash in the area of the glove compartment. It sounds like a relay opening and closing 2 or 3 times per second, even without the key in.

I know nothing about these cars and we don't have access to a shop manual. What should we look for?

skruffy
skruffy SuperDork
10/28/10 1:05 p.m.

dead battery.

Woody
Woody SuperDork
10/28/10 1:24 p.m.

Nope, new battery.

But, I got it to start. Looks like it was a problem with the factory anti theft system. Disconnected the battery to reset the system, cleaned the security pellet on the key, sent some contact cleaner into the ignition cylinder and it started right up.

Apexcarver
Apexcarver SuperDork
10/28/10 1:26 p.m.

Willing to bet it was a product of those damn GM side terminal batteries. They have been the problem 3/4 of the time whenever a friend with a GM product needs help.

Sofa King
Sofa King Reader
10/28/10 2:08 p.m.

The VATS system in that vintage Camaro has chip in the key that has a resistor in it. The system has to see the proper resistance or it will not allow the car to start. There are 2 very thin wires that run up the steering column to carry the signal to the ECU. They are known to break. There is a plug towards the bottom of the column where the column part of the wires plugs into the main harness. If you unplug the connector and cut the wires on the column side of the plug you can make your own bypass by putting a permanent resistor in the circuit. Plugh your resistor back in and it should work.. More detailed instructions are available with a Google search.

Woody
Woody SuperDork
10/28/10 2:14 p.m.

Thanks King. I found that site and it's what got me looking at the VATS system for the fix.

http://vats.likeabigdog.com/

http://www.adaptiveperformance.com/vats.htm

Sofa King
Sofa King Reader
10/28/10 2:19 p.m.

Just had the same thing happen on a 95 Camaro. $.50 cents at Radio Shack and it was fixed!

Sofa King
Sofa King Reader
10/28/10 2:23 p.m.

By the way. On the 2009 Challenge Porvette, we tried the "store bought" solution in your link to defeat the VATS in the transplanted LT1. We couldn't get it to work! The DIY solution worked there too.

ValuePack
ValuePack HalfDork
10/28/10 2:24 p.m.
Apexcarver wrote: Willing to bet it was a product of those damn GM side terminal batteries. They have been the problem 3/4 of the time whenever a friend with a GM product needs help.

That was my guess. Bane of my existence, those terminals.

Sofa King
Sofa King Reader
10/28/10 3:41 p.m.

BTW I believe that there is a VATS relay near the glove box that can also be bypassed with a jumper wire. Could also be a bad relay.

Grtechguy
Grtechguy SuperDork
10/28/10 6:02 p.m.

Yes. VATS. I had to do the same thing to my Aurora.

Step 1. Measure the resistance of the "pellet" on the key

Step 2. Buy resistors from Radio Shack matching resistance of key

Step 3. Splice resistors into wire that feeds ignition. look for a dark grey shielding containing 2 white wires.

no more key reader and the cars starts

Grtechguy
Grtechguy SuperDork
10/28/10 6:26 p.m.

with pics for Camaro

http://www.thirdgen.org/techboard/electronics/576154-vats.html

Kramer
Kramer HalfDork
10/28/10 9:36 p.m.

First step with any GM with side terminals: Cut away the red plastic covering the positive terminal. Then clean the exposed terminal with a wire brush and baking soda solution. Life will be so much easier!

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