Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Determining BCM Programed Key Code
2000 Buick Regal GSSECTION Determining BCM Programed Key Code
To determine unknown BCM key code, use PASS-Key(R) II (VATS) Interrogator (J 35628-A) and following procedure.
- Connect VATS Interrogator (J 35628-A) wiring to PASS-Key(R) II dash connector at base of steering column. DO NOT connect to steering column wiring.
- Turn VATS Interrogator (J 35628-A) on and move key code switch to "1" position and attempt to start engine. If engine starts, key code is "1". If engine does not start, turn ignition off and press 4-minute timer on VATS Interrogator.
- When timer indicator light goes out, move key code switch to next number and attempt to start engine. If engine does not start, continue trying different key codes until proper key code is found. See PASS-KEY(R) II KEY RESISTANCE table.
PASS-KEY(R) II KEY RESISTANCE
| Key Code No. | Nominal Value (Ohms) | Acceptable Range (Ohms) |
|---|---|---|
| 1 | 402 | 386-438 |
| 2 | 523 | 502-564 |
| 3 | 681 | 654-728 |
| 4 | 887 | 852-942 |
| 5 | 1130 | 1085-1195 |
| 6 | 1470 | 1411-1549 |
| 7 | 1870 | 1795-1965 |
| 8 | 2370 | 2275-2485 |
| 9 | 3010 | 2890-3150 |
| 10 | 3740 | 3590-3910 |
| 11 | 4750 | 4650-4960 |
| 12 | 6040 | 5798-6302 |
| 13 | 7500 | 7200-7820 |
| 14 | 9530 | 9149-9931 |
| 15 | 11,800 | 11,328-12,292 |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.