My [battery](/topics-battery-gmc/) voltage is getting no ...

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Without knowing all of the information like the vehicle history, the components that have been tested or replaced, the results of any tests that need to be run and without being there myself looking at the vehicle, it is hard to say exactly what is going on. I can only give you a general answer, but I hope this helps. It sounds to me like you might just have a battery issue, bad connection, blown fuse or fusible link causing your no crank condition. Electrical can be very difficult to diagnose so please stick with me and read this very carefully. There are a few possibilities here that it could be. We are going to need to run a few tests to see what is going on. Don't worry... these tests are really easy! I can walk you through this diagnoses. The first thing we need to do is check all fuses and check the battery with a voltmeter. A fully charged battery must have enough cranking capacity to provide the starter motor and ignition system with enough power to start the [engine](/topics-engine-gmc/) over a broad range of ambient temperatures. It could be bad or just low on a charge. If it is low on a charge, you need to start by charging it first and then re-testing it. If it is bad, it can still cause a no crank condition even if it’s fully charged. This is due to a bad cell inside the battery. I would recommend to get it load tested at a battery store (maybe even a parts store) or at an automotive repair shop that has a load tester. A battery load test will verify the actual cold cranking amps and the capability of the battery when put under stress (just like if you were to start the engine). This is the best test. Or you can use a voltmeter and measure the voltage while trying to crank the engine over. (Be sure it has a full charge on it which is 12.6 volts.) If the volts drop below 10.0 volts, the battery is bad and needs to be replaced. Just be sure all cables and connections are clean and tight. Not only at the battery, but on the starter, engine and frame! Positive side as well as the negative side. Set your voltmeter to the 20 volt DC scale when checking the battery. **Battery Voltage and State of Charge:** **12.68v . . . . . . . . . . 100%** **12.45v . . . . . . . . . . 75%** **12.24v . . . . . . . . . . 50%** **12.06v . . . . . . . . . . 25%** **11.89v . . . . . . . . . . 0%** If all checks out, make sure that you have full battery voltage on both terminals of the starter when cranking. If full battery voltage (12.6 volts) is present and the starter is not working, then the starter is bad and will need to be replaced! Just be sure all fuses small regular and large size fuses are good under the hood, as well as inside the vehicle Some other possible causes would be a faulty starter, engine or frame ground, faulty fuse block or power distribution center, neutral position switch/PNP, range switch or clutch switch (depending on the transmission), bad ignition switch or a wiring or a connection issue at or after the battery. Most newer cars today use the engine and/or the body module/computer to start and run the engine. The starting circuit is wired through the computer system and if the computer system is not powered up and working correctly this can and will prevent the engine from cranking (depending on your set up). If this is the case, you can check for communication with your computers using a scan tool or code reader and check for codes in the main engine and possibly the body computer of the vehicle. You can also check the starter relay operation and power/ground in and out of the relay to determine what/if any input is missing (if equipped). This will help determine if the issue with a power supply or a ground supply issue (which could indicate a computer issue). If you send me the VIN or engine size, I can send you a wiring diagram of the power distribution on your vehicle. Here are some links to help you test/check the battery. (may have to copy the links into your address bar.) [https://www.youtube.com/watch?v=o\_HzL6eKeHk](https://www.youtube.com/watch?v=o_HzL6eKeHk) [https://www.youtube.com/watch?v=COJr7OB23Hw](https://www.youtube.com/watch?v=COJr7OB23Hw) Here is a good battery comparison test. This will help you determine which battery to purchase if you need a new one. [https://www.youtube.com/watch?v=h7rTcBanpMk](https://www.youtube.com/watch?v=h7rTcBanpMk) Glad I can help. Please let me know if you have any further questions. Thanks and have a great day!