I have a 2002 Tahoe. Today I started the car and it stalled when I put it in gear. Started again with same
results. The amp gauge read 14 when running so may not be alternator.Couple hours later car ran fine. Any ideas before I take it to dealership for 500 dollar check up.Check engine light never went on. Also have a slight knock in steering wheel during right hand turns. Thanks for your help in advance

 

Check fuel pressure when it is running. Could be fuel pump going TU.