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    My 2015 Holden Colorado isn't starting

    Holden Holden Advice Holden Colorado Holden Colorado Advice Holden Colorado 2015

    My 2015 Holden Colorado won't start. I thought it could have been the battery or alternator but the battery has the green indicator on it still and both it and the alternator have plenty of power. I've jump started it once and it would start okay, but was just a bit sluggish to get going. Could it be the starter motor?

    Answered by CarsGuide
    11 April 2024
    David Morley

    The starter motor would be a very good place to start looking for the problem. If the battery checks out (and that presumes you’ve load tested it, not just run a voltmeter across its terminals) and the addition of a second jump battery only just turned the engine over, then, the starter motor is a likely suspect.

    But don’t forget things like a poor earth somewhere on the car or a dodgy ignition or starter button. Once the engine is running, check the power going into the battery. You should be looking at between 13.2 and 14.5 volts going into the battery with the engine running if the alternator is pulling its weight.

    Just because the battery indicator is showing green, does not mean categorically that it’s in good health. It can produce a surface charge that might show 12 volts with no load on it, but can fall to its knees when you load it up with the starter motor.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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