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GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2373
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2007 pontiac grand prix will not start and does not have

Customer Question

my 2007 pontiac grand prix will not start and does not have power to the purple wire at the starter silanoid. starter is good and ignition module is good, all fuses are good and relays as well.............. no anti theft message either. any ideas?????
Submitted: 1 year ago.
Category: Pontiac
Expert:  Dave Nova replied 1 year ago.

Does the transmission shift indicator show to be in Park? Have you tried starting in Neutral position?

Customer: replied 1 year ago.
It does show park and I did try starting in nuteral
Expert:  Dave Nova replied 1 year ago.

Is the 40 amp STARTER fuse good? Place your hand on the CRANK relay and have someone else turn the key to start. Does the relay click?

Customer: replied 1 year ago.
the relay does click
Expert:  Dave Nova replied 1 year ago.

Is Starter fuse okay? Do you have voltage at this fuse?

Customer: replied 1 year ago.
there is power at the j-style fuse in the engine compartment
Expert:  Dave Nova replied 1 year ago.

I know that you said the security light is not on, but try the relearn procedure listed below. Instead of waiting for the light to turn off, just time out 10 full minutes in step 2.

1. With a master PASS-Key III key, turn ON the ignition, with the engine OFF.

2. Observe the STARTING DISABLED DUE TO THEFT message on the driver information center (DIC), after approximately 10 minutes the STARTING DISABLED DUE TO THEFT message on the DIC 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.

Important: The vehicle learns the key transponder 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.

5. With a master PASS-Key III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.

Customer: replied 1 year ago.
I have done this process earlier just to rule this out.
Expert:  Dave Nova replied 1 year ago.

Try swapping the crank relay with one of the other relays in the fuse panel.

Customer: replied 1 year ago.
Have also tried this earlier
Expert:  Dave Nova replied 1 year ago.

Are you certain it is the crank relay that is clicking when key is turned to start?

Customer: replied 1 year ago.
I am sure
Customer: replied 1 year ago.
Also I had filled up the gas tank and it isn't reading it as full after the key is inserted don't know if that will help
Expert:  Dave Nova replied 1 year ago.

Check electrical connectors at underhood fuse panel. May have a poor connection there.

Customer: replied 1 year ago.
You don't think it could be the nuteral saftey switch??
Expert:  Dave Nova replied 1 year ago.

There is no switch at the transmission on this model. There is a range sensor in the transmission that reports back to the PCM (computer) The computer will then disable the starter relay based upon the range sensor position. Best thing to do at this point would be to connect a scan tool to see if the PCM is disabling the starter relay.

Customer: replied 1 year ago.
that's a sensor inside of the transmission??
Expert:  Dave Nova replied 1 year ago.

Yes, it is inside the transmission.

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