Skip the auto shop - Our mechanics make house calls

Q: My car will not start already put in a new battery so the battery isnt the issue

asked by on

I am trying to disconnect the security system but do not know how to do so

My car has 130000 miles.
My car has an automatic transmission.

Hi there - your GM car uses a "raised chip" key security system which can have problems with age. The ignition tumbler has a "reader" for the raised contact area of the key. The reader or the 2 wires going to it can fail over time, resulting in a ’no start’ condition as you are experiencing. Try using a different, known good, key. If that doesn’t work either the key reader is the likely problem, and must be replaced. Unfortunately, this is not a service YourMechanic can provide at this time. Your key needs to be service by a locksmith or GM service center, who will replace the ignition tumbler and reader.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • My car will not start already put in a new battery so the battery isnt the issue

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car does not start remotely and Check Engine Light is on

Hi there. Check to see what Engine Light code is stored first to determine what needs to be repaired. There are 21 different codes that are the basic symptoms for a vehicle with not starting and loss of power that...

Q: My car cuts off without any warning signs and it was hard for me to turn the steering wheel. It was smoking a little under the hood.

Hi there. The issue may be that when the vehicle was filled up, there may have been trash in the gas tank and it may have been stirred up into the fuel system which may have clogged up the fuel...

Q: Locked my keys in the lining of the trunk door. Is there away to get into the trunk the spare key I have doesn't unlock my trunk

Hello. Without the rear seats folding down, you will have to access the trunk through the back seat. This will require starting by removing the entire back seat. Once you have removed it, you will need to find the access...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.