Rodney went above and beyond working on our 1993 Buick LeSabre.
The auto had a start run briefly then stop and would not restart.
Rodney replaced the suspected (code 18) part crankshaft positioning sensor, the crank pulley.
Auto does not even start now.
There could be other potential issues as is the case with the early mid 90's GM autos.
There could be other suspected other parts and issues here.
Though I do believe that your mechanic should send someone to further investigate this problem at no charge, after all the car did start now it does not!
My appointment with Nelson happened in two parts. The first part was an inspection as to why my headlights weren't working. Unfortunately the only time I could book him was in the middle of my normal sleep schedule (I work graveyard), so waking up to deal with my car wasn't fun. He told me what was wrong, and that I could book him the next day at 3 PM for a fix. I booked him again, and explained to him that the times for these appointments conflicted with my work and sleep schedule and asked if he could pick the keys up and fix it without me having to get up. He obliged, and I got to sleep without having to get up and sign anything or worry about my car whatsoever. Absolutely fantastic and convenient. Nelson was also friendly and explained everything he was going to be doing.