LCZ06

I am trying to order the proper VATS Key blank and I'm using these instructions on how to go about that, I have never used a Multimeter and I wanted to make sure I'm doing the reading right before I purchase my blank. So I looked at the instructions, and I found the Ohm selection area. Their are 4 options for reading in the Ohm area, 200, 2000, 20k, 200k, 2000k. Which setting should I use to get a proper reading?

Bill Vett

This is a reply to a previous post on keys.... By DeeGee

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You can pick up keys at any locksmiths but sounds like Lowes may be the place. You need one with the correct resistor pellet or the VATS will inhibit the start.

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 VATS key 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)

dougbfresh

I think this is supposed to be in KOhms. If it was ohms, it would be in essence NO resistance for most of the range. This site has the same #'s but states KOhms which I seem to recall last time I bypassed one http://vats.likeabigdog.com/

SO, the the OP, the 200 ohm scale is most likely what you want. The low range is 402 ohms for the keys-if you max out, go to the 2000 scale for the higher values.

LCZ06

Answer found, it should be set to 20k. Thanks for the help, I appreciate it. Mine read as 9.51, so I'm guessing that means I would need # 14————9.530?

RLYSLO

Yep, you got it

ALLEGRO

Good Luck

silverbullit99

Don't guess just go to the dealer they will tell you what key you need.

76 VETTE

My dealer wanted $30 to tell me mine .Very simple to do yourself.

RLYSLO

He didn't guess. He measured it. The dealership doesn't measure better ohms than what his meter does

kennya35

LMAO!!!

jrose7004

That was my thought too.

1stvet87

Just did it. I just got back from my local chevy dealer getting a spare key made. Yes it was over $30.00, that was for the blank. Included was testing my old key, and cutting the new blank. I may have been able to test my old key, get the resistance, match it on the chart, and order a blank from flea-bay, then take it and have it cut to match mine. If all worked well i may, may have saved money. Or i might have lost it all and had to start all over if i didn't measure it correctly, if the flea-bayer sent the wrong blank, or if the lock smith cut it wrong. I'll just pack my lunch next week instead of eating out and be glad i have an spare key that works. lol

By the way GREAT web sight, and you guys are loaded with knowledge. Thanks for all you do.

Chuck Gongloff

That's just what I did. When we bought the 2001 coupe, we had 2 FOBs but only one key.

Went to the dealer. He measured the OHMS. Cut the key. My cost with my Corvette Club discount was in the low $30.00 range. Easy, fast, relatively cheap, AND guaranteed.

Sometimes you have to pick your battles. The hassle of DIY'ing for a key wasn't worth it to me for $30.00.

Chuck