Keep others from driving off with your 1986 Corvette by getting a new C4 Corvette VATS Ignition Key. VATS stands for Vehicle Anti-Theft System. It is commonly referred to as PassKey and only lets people with a matching C4 Corvette key start your car.
- The VATS module does most of the security work and is the brains of the entire system. The VATS module "reads" the resistance thru the contacts in the lock cylinder and the related wiring. The ignition key has a little "chip" in it. This is a resistor "pellet." There are 15 possible resistances, therefore, there are also 15 different types of keys with a different resistance. This reduces the likelihood of a potential thief having the correct resistance resistor on hand.
- Getting a new C4 Corvette VATS ignition key can also solve one of the most common 1988 and 1993 Corvette problems. Owners who use a raised-chip key often experience starting problems as the chip can break the steering column wires that lead to the ignition lock cylinder. Replacing your key with one of these VATS keys (and possibly replacing the cylinder) will help solve this problem.
- Not sure which VATS C4 Corvette value you need? If you have a meter with an Ohms setting, set it on 2OK and place one lead on one side of the pellet and one lead on the other. A value will be shown. Use the chart below to determine which number you need. If your Ohms value does not match the charts number exactly, round it to the nearest number. Example: Your key measures 1.18 0 Ohms. The blank you most likely need is the #5 key as it is closer to 1.13 0 Ohms than 0.887 (4) or 1.47 0 (6) Ohms.
- #1 = 0.402.
- #2 = 0.523.
- #3 = 0.681.
- #4 = 0.887.
- #5 = 1.130.
- #6 = 1.470.
- #7 = 1.870.
- #8 = 2.370.
- #9 = 3.010.
- #10 = 3.740.
- #11 = 4.750.
- #12 = 6.040.
- #13 = 7.500.
- #14 = 9.530.
- #15 = 11.800.
- Corvette Is A Registered Trademark Of The General Motors Corporation.
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