Skip the auto shop - Our mechanics make house calls

Q: Recurring starting problems

asked by on

I’m having recurring starting problems with my truck. It happens about every 12 to 14 tries when starting my car. I turn the key in the ignition and nothing happens. My dashboard lights up when I turn key off and try again to start my truck. It will finally start, but it's happening more and more often. Do you know what is causing this problem? What should I do to fix it?

A: In your vehicle, the Engine Control Module ...

In your vehicle, the Engine Control Module (ECM) directly controls the starter relay to engage the starter and start your vehicle. When the ignition switch is turned to the start position, a 12 volt signal is sent to the Body Control Module (BCM). The BCM then communicates the start command to the ECM. The ECM the signal from the transmission position switch to ensure the vehicle is in park. If everything looks good, it supplies the 12 volts needed to start your vehicle. Intermittent no crank, no start problems are often caused by a faulty starter motor. Other potential causes include a sticking starter relay, faulty transmission range position switch, or a problem with the BCM or ECM. I suggest you have a professional, such as one from YourMechanic, diagnose your starting problem and repair your Cadillac firsthand.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Car starts but then stalls

Since this issue did not present itself until after the replacement of the ignition switch, it most likely was created during the installation or reassembly process. In order to replace the ignition switch, the steering column needs to be lowered....

Q: car not starting

Hello! It is likely that you did drain your battery quite significantly when listening to the radio. There are some batteries that are unable to receive a charge again once they become very low. I suggest removing the battery and...

Q: engine warning light flashing

You should have the computer scanned to see if the stored codes are for a misfiring in the ignition system. Have the spark plugs checked and replaced as needed and the coils and wires may need to be replaced at...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.