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Ask Don - Mo Lurch Your Own Question
Don - Mo Lurch
Don - Mo Lurch, Auto Mech / Electronics
Category: Chevy
Satisfied Customers: 21006
Experience:  Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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2003 Astro van, security system won't let it continue to

Customer Question

2003 Astro van , security system won't let it continue to run, starts and dies.
JA: Have you checked the battery, particularly the terminal connections? Are they corroded?
Customer: Yes
JA: What is the make/model of your car?
Customer: 3003 Astro van
JA: What year is your '03 Astro?
Customer: 2003
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Did several resets on security.wont reset
JA: Anything else you want the mechanic to know before I connect you?
Customer: I take them to dealer, they reset with computer, they tell me I can do same thing by the 5 sec. Off 10 min. On for 3 times on the ignition, won't work for me
Submitted: 10 months ago.
Category: Chevy
Expert:  Don - Mo Lurch replied 10 months ago.

It goes like this:
30 Minute Learn Procedure
Turn ON the ignition, with the engine OFF.
Attempt to start the engine, then release the key to ON (vehicle will not start).
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 4 two more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock(TM) Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).
Start the engine (the vehicle has now learned the Passlock(TM) Sensor Data Code and/or password).


You should NOT have to do this, IF you have Programmed or Dealer has Programmed already.
You can also try:
Be sure Battery is fully charged
Key OFF & out
All Doors & Hood is shut
Leave Vehicle "UNDISTURBED" for at least 14 minutes
Unlock Driver Door
Start vehicle

IF NONE of the above work, please take Vehicle to a GM Dealer that knows what they are doing