is there an easy way to overide VATS

[Dave1966]

ive read all the storys about shaking the car,waiting 5 mins, and holding your tongue the rite way when you turn the key! but is there a simple way to overide the vats?

 

[1995 RedVette]

I had an 86 and 87, in both of the cars, the vats module had been removed from behind the driver information center. All that was left was the plugs at the end of the wiring harness. That said, I'm not sure if there is anything else involved, other than just removing the modules.

Brett

 

[Magmotor]

I put this Vats over-ride switch on mine. Works great. I had a door switch that would trick the Vats into thinking someone was opening the car while the security system was armed. Drove me nuts. Took 5 mins to install.


Mid America has em.

http://www.madvet.com/shop?frame=1.132.862

 

[HPG]

Me 2, I have the VATS by-pass and it works fine. No more lock outs from VATS

I put this Vats over-ride switch on mine. Works great. I had a door switch that would trick the Vats into thinking someone was opening the car while the security system was armed. Drove me nuts. Took 5 mins to install.


Mid America has em.

http://www.madvet.com/shop?frame=1.132.862

 

[jmccloud]

VATS Overide

There are several threads on this (see 'search' above); the text of one follows. The original had a good graphic but it isn't in this cut/paste.
Hope this helps
GM No-Crank in vehicles with

Vehicle Anti-Theft System (VATS)

A No-Crank condition in GM vehicles with Vehicle Anti-Theft Systems may be caused by either a bad igintion key or a

problem in the ignition switch/VATS wiring harness. (Switch/harness assembly problems seem to be more common than

key failures.)

Test 1) Check the ignition key. Each key contains a resistance pellet. Remove the key and check the pellet’s resistance.

The chart below shows possible resistance values for ignition keys. If the key resistance matches one of the chart values,

go to Test 2. If the key’s resistance value doesn’t match one of the values in the chart, replace it with a new one. Your

GM dealer can provide part number information if you give him the VAT module identification number.

Test 2) Insert the ignition key in the ignition switch. Remove the lower dash bezel. Locate the two-terminal white connector

near the base of the steering column, and disconnect it. (See the next tip for a schematic.) Insert your ohmmeter

leads across the terminals of the connector half containing the white wires and measure the resistance. The resistance

value measured across the connector should match the key resistance. If it doesn’t, then the problem is in the switch/

harness assembly. Replace the assembly.

Resistance Value Chart for GM VATs (Lists possible resistance values, including acceptable ranges)

• 402 ohms (acceptable range 386-438)

• 523 ohms (acceptable range 502-564)

• 681 ohms (acceptable range 650-728)

• 887 ohms (acceptable range 850-942)

• 1130 ohms (acceptable range 1085-1195)

• 1470 ohms (acceptable range 1411-1549)

• 1870 ohms (acceptable range 1795-1965)

• 2370 ohms (acceptable range 2275-2485)

• 3010 ohms (acceptable range 2890-3150)

• 3740 ohms (acceptable range 3590-3910)

• 4750 ohms (acceptable range 4560-4960)

• 6040 ohms (acceptable range 5798-6302)

• 7500 ohms (acceptable range 7200-7820)

• 9530 ohms (acceptable range 9149-9931)

• 11800 ohms (acceptable range 11328-12292)

Silver

Bullets

Temporary Fix for GM No-Crank in Vehicles

with Vehicle Anti-Theft System (VATS)

Experience suggests that VAT

ignition key failures are less

common than no-cranking conditions

caused by switch/harness

failures.

If you need to start a car to get it

into the shop, try this:

• Remove the ignition key and

measure the resistance of the pellet

in the key.

• Drop the steering column bezel

and disconnect the white wire

connector.

• Connect your sensor simulator across the terminals of the harness connected to the VATS module and “dial in” a

resistance equal to the key pellet resistance, or simply insert a fixed resistor of the correct value.

This bypasses the key/harness and, in many instances, it will allow you to start the vehicle and drive it into the shop.

 

[Moonunit 451]

Good info so far If you want to know how to fix (bypass) it yourself, search my name and go to my first few posts, follow them and you'll find EVERYTHING you need to know to do it yourself for about $3 with parts from Radio Shack if you got some basic equipment and knowledge

Replacing the lock cylinder and keys are quite a project and expense comparably. Good luck, and if you have further questions, ask away