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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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Pontiac Grand Am SE: My anti theft system light comes on,

Customer Question

My anti theft system light comes on, then all dash lights come on and starts flashing. Can cut car off, start again theft light comes on,
dash lights will be off but will start flashing again. Will last few minutes. Car might cut off but not always. Might not do again for a few weeks. I have 1998 grand am se.
Submitted: 6 months ago.
Category: Pontiac
Expert:  Tool Hut replied 6 months ago.
Hi, My Name is ***** ***** for posting your question to just answer. I am a independent contractor for just answer, and ASE Certified Master Auto Technician with 20 years experience. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution.There will probably be some equipment needed for a proper diagnosis. If you are not comfortable with this or do not have any test equipment please let me know ASAP. I also try to give all of the information you may need expecting a positive rating. I am not compensated for my time until you leave a positive rating. Your rating should be based on the service you received.DO you have a volt meter?
Customer: replied 6 months ago.
No. I don't have any kind of tools to check anything. Thought you might know what the problem could be.I know it is not alternator or battery. Mechanics here said they could put it on machine but lights on dash would have to be flashing to get read out. By the time I get car to mechanic lights have gone off.
Customer: replied 6 months ago.
Is there a computer chip that controls theft system ? Can it be removed or replaced?
Expert:  Tool Hut replied 6 months ago.
My suspicion is you have a charging problem. I wanted you to check the battery voltage. Yes there is a computer that controls the theft system. Yes it can be replaced. I doubt that is your problem. Lets start with a battery voltage when running
Customer: replied 6 months ago.
Had battery voltage and alternater checked. Not those
Expert:  Tool Hut replied 6 months ago.
Were the lights flashing when they checked the alternator?
Expert:  Tool Hut replied 6 months ago.
I am going to opt out since you do not have any basic test equipment.
Customer: replied 6 months ago.
OK.

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