My 68 year old customer called me a parts changer and it made me rethink how I explain repairs
He sat in my bay for 20 minutes watching me swap his alternator last Tuesday. When I handed him the keys he said "you just put parts on til it works, that ain't fixing." I wanted to argue but he had a point. I never showed him the voltage drop test that proved the ground strap was the real problem. Now I draw it out on paper for everybody. Do you walk customers through the diag or just hand them the bill?