Skip the auto shop - Our mechanics make house calls

Q: Car will not start because of electric problem

asked by on

There is some part of the electrical system, maybe connected to the alarm or something, that will not allow my 2007 Chevrolet Impala to start. I know that it is not the battery dying, as I carry a battery jumper with me and that did nothing. What would cause this? The car isn’t new, it has 64,000 miles on it, but this is ridiculous. I hate not being able to rely on my car! What can I do?

A: The theft deterrent system on your vehicle ...

The theft deterrent system on your vehicle has a module that needs to see a key that belongs to the vehicle to turn on the ignition so your vehicle can start. While looking at the theft light on the dash the light should not be on when you are trying to start the vehicle. If the light is out, then you may have another issue causing the no start. If the light is on, then the problem is in the theft deterrent module or the key. First try the second key that came with your vehicle. If that worked then a replacement key will be needed. If it still doesn't start then try replacing both remote batteries and retry. If it still doesn't start then the theft module would have to be replaced and reprogrammed by using the Tech 2 system.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Headlights out while driving. 1991 Chrysler New Yorker

Hello. The first thing to check is to see if the headlight bulbs are the correct ones for the vehicle. If they are not, then they can overheat the circuit and cause the problem you have. I would recommend replacing...

Q: Replaced ignition switch, now the car won't start.

Chevrolet has something called a (VATS) Vehicle Anti Theft System which uses a resistive chip ignition key system. VATS has a separate module that is called a TDM or theft deterrent module which sends a signal to the ECM (Car's...

Q: How long can I drive my car with the engine light on?

Hi there. It is no good to drive a vehicle with the engine light on. The engine light is on for a sensor has picked up something that is not functioning or operating correctly. Check the computer with a scanner...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.