My key isnt showing :(
03-31-2006, 01:24 AM
#1
What to do? So far im going to dealership in the morning 
03-31-2006, 01:17 PM
#4
My spare key has never been used to start the car since I've owned it. I had to use it once a couple years ago and I had the same problem....key wouldn't start the car. I never could get it to work. I'm guessing the resistor just died...if that's even possible.
03-31-2006, 01:33 PM
#5
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well we found out that there was only 15 different resistance for keys out there so we are just going to try all 15 and get rid if it for good
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03-31-2006, 06:05 PM
#8
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
#9
TECH Senior Member
Thread Starter
iTrader: (10)
Join Date: May 2005
Location: Bossier city,LA barksdale AFB
Posts: 5,353
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Received 2 Likes
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2 Posts
got it i just got a new key made at dealers ship 
they called Gm and gave them the vin# and they told them what to use $45 Thanx for all the info
they called Gm and gave them the vin# and they told them what to use $45 Thanx for all the info 