Correct Vats Key Help Plz
Thread Starter
Intermediate
Joined: Jul 2014
Posts: 46
Likes: 0
Correct Vats Key Help Plz
I am going to bypass the vats system in my 86. Measured the ohms and came up with 4012. Key #10 is suppose to be 3740, and key #11 is 4750. Which one would i need? Thanks, Scott
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
If car starts with key you have' get a 4k ohm resistor. You could go be local dealer part dept and ask them if they would tell you what blank number it is. Then get resistor(s)
Burning Brakes
Joined: Jan 2017
Posts: 961
Likes: 237
From: Diamondhead Mississippi
St. Jude Donor '17-'18-'19-'20-'21-'22
You can also take it to any locksmith that does keys and they should be able to tell you which VATS number it is. That is how they make additional keys.
Cruising
Joined: Feb 2017
Posts: 13
Likes: 2
Melting Slicks
Joined: Sep 2010
Posts: 2,422
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Safety Car
Joined: Aug 2013
Posts: 4,427
Likes: 604
From: Minneapolis Mn
I have this info I found once:
Key Resistance Values / Allowable Resistance Range
Possible Resistor Combinations
Key Number Resistance Min~Max Resistance Allowed Resistor 1 Resistor 2 Resistor 3 Resistor 4 Total Resistance
1 402 386 ~ 438 220 150 33 403
2 523 502 ~ 564 220 270 33 523
3 681 650 ~ 728 330 330 22 682
4 887 850 ~ 942 820 68 888
5 1130 1085 ~ 1195 560 560 10 1130
6 1470 1111 ~ 1549 1200 270 1470
7 1870 1795 ~ 1965 1800 68 2.2 1870.2
8 2370 2275 ~ 2485 1800 510 68 2378
9 3010 2890 ~ 3150 3000 10 3010
10 3740 3590 ~ 3910 3300 220 220 3740
11 4750 4560 ~ 4960 4700 51 4751
12 6040 5798 ~ 6302 3000 3000 39 6039
13 7500 7200 ~ 7820 6800 680 22 7502
14 9530 9149 ~ 9931 8200 1200 120 10 9530
15 11800 11328 ~ 12292 5600 5600 560 39 11799
didn't format well pasting, but look at the first line to identify what each column represents. First column is the key identifier, 2d is minimum resistor value and 3d is the maximum value. Others are if you are making up your own resistor pack for that particular value.
Hope that helps.
Key Resistance Values / Allowable Resistance Range
Possible Resistor Combinations
Key Number Resistance Min~Max Resistance Allowed Resistor 1 Resistor 2 Resistor 3 Resistor 4 Total Resistance
1 402 386 ~ 438 220 150 33 403
2 523 502 ~ 564 220 270 33 523
3 681 650 ~ 728 330 330 22 682
4 887 850 ~ 942 820 68 888
5 1130 1085 ~ 1195 560 560 10 1130
6 1470 1111 ~ 1549 1200 270 1470
7 1870 1795 ~ 1965 1800 68 2.2 1870.2
8 2370 2275 ~ 2485 1800 510 68 2378
9 3010 2890 ~ 3150 3000 10 3010
10 3740 3590 ~ 3910 3300 220 220 3740
11 4750 4560 ~ 4960 4700 51 4751
12 6040 5798 ~ 6302 3000 3000 39 6039
13 7500 7200 ~ 7820 6800 680 22 7502
14 9530 9149 ~ 9931 8200 1200 120 10 9530
15 11800 11328 ~ 12292 5600 5600 560 39 11799
didn't format well pasting, but look at the first line to identify what each column represents. First column is the key identifier, 2d is minimum resistor value and 3d is the maximum value. Others are if you are making up your own resistor pack for that particular value.
Hope that helps.
Team Owner
Joined: Sep 2003
Posts: 25,386
Likes: 2,738
I don't know that I've ever seen that documented and of the many I've checked I've never seen one that wasn't within the range of original GM design specification.
OP - How many keys do you have? Did you check all?
I believe that if I were you and I had the value mentioned I'd check with maybe another meter. If another meter validated the value I'd maybe look and see if that maybe there's NOT already a bypass in place. I'd think it's very likely. Do you KNOW that there's NOT a bypass in place?
Bad meter? Maybe most likely Operator error? Who knows
It might be interesting to maybe take your key to a dealer and ask that they "drop it" in their VATS Interrogator. I'd expect likely an ERR.
OP - How many keys do you have? Did you check all?
I believe that if I were you and I had the value mentioned I'd check with maybe another meter. If another meter validated the value I'd maybe look and see if that maybe there's NOT already a bypass in place. I'd think it's very likely. Do you KNOW that there's NOT a bypass in place?
Bad meter? Maybe most likely Operator error? Who knows
It might be interesting to maybe take your key to a dealer and ask that they "drop it" in their VATS Interrogator. I'd expect likely an ERR.
Last edited by WVZR-1; Apr 14, 2017 at 08:13 AM.
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Melting Slicks
Joined: Feb 2003
Posts: 2,675
Likes: 810
From: Saskatoon Sask.
How are you holding your meter leads to the key? If you are touching with your bare fingers, you may be skewing the results. Meter zeroed?
Melting Slicks
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
just the reality of an obsolete technology
they did say if I figured out what blank I needed they would order it and the cutting would be free
i measured mine and ordered off eBay Home Depot cut for free just have to promise you won't blame them if it doesn't work and since it's free there is no receipt anyway
Last edited by belairbrian; Apr 14, 2017 at 11:32 AM.
Thread Starter
Intermediate
Joined: Jul 2014
Posts: 46
Likes: 0
I don't know that I've ever seen that documented and of the many I've checked I've never seen one that wasn't within the range of original GM design specification.
OP - How many keys do you have? Did you check all?
I believe that if I were you and I had the value mentioned I'd check with maybe another meter. If another meter validated the value I'd maybe look and see if that maybe there's NOT already a bypass in place. I'd think it's very likely. Do you KNOW that there's NOT a bypass in place?
Bad meter? Maybe most likely Operator error? Who knows
It might be interesting to maybe take your key to a dealer and ask that they "drop it" in their VATS Interrogator. I'd expect likely an ERR.
OP - How many keys do you have? Did you check all?
I believe that if I were you and I had the value mentioned I'd check with maybe another meter. If another meter validated the value I'd maybe look and see if that maybe there's NOT already a bypass in place. I'd think it's very likely. Do you KNOW that there's NOT a bypass in place?
Bad meter? Maybe most likely Operator error? Who knows
It might be interesting to maybe take your key to a dealer and ask that they "drop it" in their VATS Interrogator. I'd expect likely an ERR.
I was my error, i wrote the decimal down in the wrong spot, Turns out i have key #1, ordered the bypass kit. thanks for the help.
Team Owner
Joined: Sep 2003
Posts: 25,386
Likes: 2,738
It's good to see you post back - many (maybe most) would have just moved on!!
Last edited by WVZR-1; Apr 15, 2017 at 04:58 AM.
Thread Starter
Intermediate
Joined: Jul 2014
Posts: 46
Likes: 0
im hoping it works anyway. my resistance was 420. and the #1 key is suppose to be around 402. hopefully this will work. its just the start. ive got a few gremlins to work out. thanks again