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ASEMaster35yrs
ASEMaster35yrs, Pontiac Technician
Category: Pontiac
Satisfied Customers: 2015
Experience:  ASE Certified since 1972,Master Auto tech,Heavy Truck,4 years pontiac dealer Tech
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Pontiac G6 What to do, car wont start, security light coming

Resolved Question:

What to do, car won't start, security light coming on?? Car is a Pontiac G6, 2007.
Submitted: 3 years ago.
Category: Pontiac
Expert:  ASEMaster35yrs replied 3 years ago.

Glad to be of help. First thing is to have your battery checked. You should have at least 12.6 volts at the battery with engine off. If battery is good, turn key on without starting, leave on for 10 minutes before starting. Try this first.

 

The most common intermittent no start problem I am aware of on this system is in the ignition lock and housing.

 

This system works by the sensing of the ignition lock being rotated. The ignition lock in this vehicle is open. It has been very common to have excessive grease (graphite) in many cases to spray in the housing blocking the magnetic field. Thus, the computer cannot sense the rotation of the ignition lock.

There is no special ignition key and the security is built into the lock and the housing with a magnetic field. The vehicle's computer senses the rotation of the lock and thus fuel is delivered.

Here is the passlock key relearn procedure:

 

Theft deterent systems, relearn procedures

http://www.bsecorp.com/files/techtips/ST9303l.pdf

 

Passlock III Relearn Procedure

30-Minute Relearn Procedure

Use this procedure after replacing any of the following components:

The PASS-Key III plus keys

 

The theft deterrent module (TDM)

 

The powertrain control module (PCM)

This procedure is not available on vehicles equipped with EXPORT configured TDMs.

When performing the 30-minute relearn procedure, all previously learned keys will be erased from the TDM memory. Additional keys may be learned after performing the relearn procedure.

When replacing a TDM with a GM SPO Replacement Part, ensure the procedure to setup a new TDM is performed prior to the 30-Minute Relearn Procedure.

  • 1. With a master vehicle key, turn ON the ignition, with the engine OFF.
  • 2. Observe the security indicator. After approximately 10 minutes, the telltale will turn OFF.
  • 3. Turn OFF the ignition, and wait 5 seconds.

•4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.

  • 5. ignition OFF before attempting to start the vehicle.
  • 6. With a master vehicle key, start the vehicle. The vehicle has now learned the key transponder information and/or the ECM has now learned the fuel continue password.
  • 7. If additional keys are required to be learned, continue to step 7.
  • 8. With a previously learned master key, turn ON the ignition, with the engine OFF.
  • 9. Turn OFF the ignition and remove the key.
  • 10. Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.
ASEMaster35yrs, Pontiac Technician
Category: Pontiac
Satisfied Customers: 2015
Experience: ASE Certified since 1972,Master Auto tech,Heavy Truck,4 years pontiac dealer Tech
ASEMaster35yrs and 2 other Pontiac Specialists are ready to help you

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