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03-29-2006, 10:20 PM
#1
03-30-2006, 03:16 PM
#4
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It is the VATS system. Mine did it for a while. Clean the key, and like the other person said, use another key. After that, try disconnecting the battery. Car thinks its trying to be stolen basically.
03-30-2006, 04:43 PM
#5
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i only have one key 
and i cleaned the key didnt work. From what i was told it is not the VATS. Then they said if it was the VATs the car would turn over and just not get fuel. Remember a while back a friend had the same problem and it was the relay i will check it out later it is **** pouring rain right now
and i cleaned the key didnt work. From what i was told it is not the VATS. Then they said if it was the VATs the car would turn over and just not get fuel. Remember a while back a friend had the same problem and it was the relay i will check it out later it is **** pouring rain right now
03-30-2006, 06:31 PM
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The ignition lock cylinder has 2 small wires running to it for the VATS. If they break the car will do what you are describing. You would need a new lock and key if that's the case.
03-30-2006, 08:21 PM
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Originally Posted by TransAm98
The ignition lock cylinder has 2 small wires running to it for the VATS. If they break the car will do what you are describing. You would need a new lock and key if that's the case.
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03-31-2006, 10:11 AM
#10
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Originally Posted by DansRedz28
how much? i was also told a cheep way but putting a resistor in it?
03-31-2006, 06:06 PM
#11
Silver
Bullets
key failures.)
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
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)
Key/Switch
Temporary Fix for GM No-Crank in Vehicles
with Vehicle Anti-Theft System (VATS)
White Connector
Ignition Key
with
Resistance
Pellet
VATS
Module
White wires
from Ignition Wire colors
to VATS module
typically a color
other than white
VATS
Module in the key.
Silver
Bullets
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
• Drop the steering column bezel
and disconnect the white wire
connector.
Resistor Bypasses Ignition Key
• 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.
Bullets
key failures.)
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
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)
Key/Switch
Temporary Fix for GM No-Crank in Vehicles
with Vehicle Anti-Theft System (VATS)
White Connector
Ignition Key
with
Resistance
Pellet
VATS
Module
White wires
from Ignition Wire colors
to VATS module
typically a color
other than white
VATS
Module in the key.
Silver
Bullets
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
• Drop the steering column bezel
and disconnect the white wire
connector.
Resistor Bypasses Ignition Key
• 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.
03-31-2006, 07:17 PM
#12
they called Gm and gave them the vin# and they told them what to use 