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: Heater core area leak

Hi, the heater core is typically hidden inside the dashboard, do you mean the radiator at the front of the engine? If the radiator is leaking fluid, the vehicle should not be driven as there is no way for the...

Q: i need a quote for a fuel line replacement on a 2004 Buick LeSabre, if i provide the fuel lines

Sent to CS

Q: Why is my car is real slow to accelerate?

This may be related to a few different things, such as low fuel pressure, dirty or faulty fuel injectors or potentially a dirty or failing mass air flow sensor. Low fuel pressure can cause the injectors to not receive...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...