Blank key?
Thread Starter
Racer
Joined: May 2007
Posts: 435
Likes: 1
From: Newcastle, UK
Blank key?
Hi all
Just had my key snap off in the ignition.
Can anyone please tell me where to buy a spare uncut blank key from?
I've looked on Ebay but there are no keys specific to the C5.
Thanks
Just had my key snap off in the ignition.
Can anyone please tell me where to buy a spare uncut blank key from?
I've looked on Ebay but there are no keys specific to the C5.
Thanks
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You are going to have to know the resistance of the original key - otherwise the car will not start even if you get the broken key out of the ignition. If you can get the resistance number - then a locksmith should have a key blank - or a Chevy dealer. You also might try Gene at gmpartshouse.com.
Thread Starter
Racer
Joined: May 2007
Posts: 435
Likes: 1
From: Newcastle, UK
You are going to have to know the resistance of the original key - otherwise the car will not start even if you get the broken key out of the ignition. If you can get the resistance number - then a locksmith should have a key blank - or a Chevy dealer. You also might try Gene at gmpartshouse.com.
Instructor
Joined: Aug 2008
Posts: 204
Likes: 0
From: Lake Placid Florida
Key
You do need to know the resistance of the key. You might be able to take what you have to a Chevy dealer and ask for the key number. ?They list them from 1 to 15, then get the blank from a vendor here. I got mine from Eckler's. They were the less expensive. By less expensive...they were $15.00 and others were $30.00. Get the resistance/number.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
This will let you order off the internet:
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
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