There are 15 different values:
Value: Ohms
02 – 0.523
03 – 0.681
04 – 0.887
05 – 1.130
06 – 1.470
07 – 1.870
08 – 2.370
09 – 3.010
10 – 3.740
11 – 4.750
12 – 6.040
13 – 7.500
14 – 9.530
15 – 11.801
It could be any of those. If you’re trying to bypass it doesn’t have to be exact but it does need to be close. To make the correct value of resistor, get resistors of different values and add them up. Solder them in-line to each other.
If you don’t know the correct value start at the bottom and work your way up. There’s a 4 minute wait between trys and the ignition needs to go to the OFF position before you start the wait.
Read more: http://wiki.answers.com/Q/What_are_the_values_for_GM_vats#ixzz1LRRgWcn7
Acceptable ranges)
1 402 ohms (acceptable range 386-438)
2 523 ohms (acceptable range 502-564)
3 681 ohms (acceptable range 650-728)
4 887 ohms (acceptable range 850-942)
5 1130 ohms (acceptable range 1085-1195)
6 1470 ohms (acceptable range 1411-1549)
7 1870 ohms (acceptable range 1795-1965)
8 2370 ohms (acceptable range 2275-2485)
9 3010 ohms (acceptable range 2890-3150)
10 3740 ohms (acceptable range 3590-3910)
11 4750 ohms (acceptable range 4560-4960)
12 6040 ohms (acceptable range 5798-6302)
13 7500 ohms (acceptable range 7200-7820)
14 9530 ohms (acceptable range 9149-9931)
15 11800 ohms (acceptable range 11328-12292)
Read more: http://wiki.answers.com/Q/How_can_you_bypass_the_VAT_device#ixzz1LRSMS5Zc