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Discussion Starter · #1 ·
hi i have an 03 2 wheel drive with 2.2 motor s10 truck my father and brother changed the heater core now the security light stays on and it wont start up just shuts right back down we have tried a few bypass/rest trick but nothing the only thing that has worked somewhat was to remove the positive battery termanal and pull the ecm fuse let it sit like that for 5 min put it back together it will start up and run and drive but as soon as the truck gets shut down it goes right back to not wanting to stay running just keeps shutting down please help im at a lose ive only had the truck 2 months
 

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For crying out loud...use some punctuation.
 

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Discussion Starter · #3 ·
Check that you didn't accidently pull one of the connectors out of the BCM.
Then reset the Passlock security system. Takes about 1/2 an hour. Just need to be sure the battery is good and don't do it in the garage or at night because the automatic headlights will kill the battery. Doesn't hurt to have a charger on it while doing the relearn. If it doesn't work, do it again.


Make sure the battery if fully charged because this procedure may take up to 30 minutes and you cannot start the vehicle during this time. The BCM and PCM must be in working order.

1. Turn the key to ON and attempt to start the engine and release the key to the ON position.

2. The SECURITY light will illuminate. Wait 10 minutes until it turns off.

3. Turn the key to OFF for 10 seconds.

4. Turn the key to ON and attempt to start the engine. If it starts and run, the system has reset. If it doesn’t start or run and release the key to the ON position and complete the rest of the steps.

5. The SECURITY light will illuminate. Wait 10 minutes until it turns off.

6. Turn the key to OFF and wait 10 seconds.

7. Turn the key to ON and attempt to start the engine and release the key to the ON position.

8. The SECURITY light will illuminate. Wait 10 minutes until it turns off.

9. Turn the key to OFF and wait 10 seconds.

10. Start the engine

Can this be made into a sticky so I don't have to keep posting it?
we tried this it didn’t work and yes I’m not sure how to do that though
 
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