how to bypass the keypass III security system

2000 CHEVROLET VENTURE
150,000 MILES
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TERRYLS_1
  • MEMBER
  • 1 POST
will not crank, security light flashes in run position. stater been tested, new battery, new crank relay, fuses good, neutral safety switch and backup lights ok. When jump starter to crank do not get fuel.
Oct 21, 2011 at 7:47 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 POSTS
30 Minute Re-Learn Procedure (Domestic Vehicles Only)

Use this procedure after replacing:

The keys/lock cylinders
The theft deterrent controller module
The PCM (if necessary, see important above)

Turn ON the ignition, with the engine OFF using a Master Pass Key III Key (Black).
Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
Turn OFF the ignition, and wait 5 seconds .
Repeat steps 1 through 3 two more times for a total of 3 cycles or 30 minutes .

IMPORTANT: The vehicle learns the key information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

Start the vehicle (the vehicle has now learned the key and password information).
With a scan tool, clear any DTCs.
Nov 14, 2017 at 7:47 PM
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