We have a 2012 Denali 2500HD with a duramax diesel. Truck has about 140,000 miles on it. Occasionally when you get it and turn the key it clicks but won’t start. Turn it back and retry and it starts. Tried the second key thinking it might be caused by worn lobes on the key, but it did it again today. Just don’t want to end up stranded somewhere. Ideas? Key switch or something else? Starter has been replaced within the last 15,000 miles.
