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?

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: If I change spark plugs and wires do I change the rotor and distributor cap also?

It is recommended to replace distributor cap and rotor at the same time you are having the spark plugs and spark plug wires replaced. The cap and rotor contacts will wear down just like the spark plug electrodes wear down...

Q: Doesn't start when warm - 1974 Mercedes Benz 240D

Hello. It sounds like the injectors and the glow plugs need to be replaced. The cold start valve could have a problem as well. This valve could be kicking in when it shouldn’t (when it’s warm) and this may result...

Q: Brake wear warning light

Hey there, thanks for writing in about your 2011 Lexus LS460. If the light does not clear after several drive cycles then there may be an open in either of the brake pad wear sensor circuits. Continuity of these circuits...

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 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...
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.