07.5 - 09 3rd Gen 6.7 Liter General Discussion
2500 6.7l diesel, 106,000 miles
My non-starter battery is at 14V (ideal) but my starting battery keeps fluctuating between 2-10V, and even when jumped and running for 2 hours, 1 hour after turning off it struggled to start again. Is this an alternator issue? My batteries are <2 years old...