Starting issue

2011 Tundra had a few hard starts and eventually didn't start at all. Battery reading was in the middle at 14v. After taking it to 2 different places and having the battery tested one can back alternator and the other was the starter. I'm puzzled as to where to begin. I did jump start it and it fired right up and ran fine for about 20 minutes with no dimming of lights.

 

I would start by looking for loose connections.

 

what else are you experiencing?? When you turn over what else happens??? People have had a variety of experiences with battery, alternator and starter. A little more detail can help us, help you. Do you have a flex fuel?? Do you hear a click and nothing happens?? Does it just kill everything when you turn over? Does it click multiple times and nothing happens?? I've replaced my batteries and starter, still have the OEM alternator, so I wouldn't know about that subject... Welcome from NorCal