Somewhat of a process of elimination George. I took it back to my regular place cuz I knew it was driving him crazy. I know he used his scanner, and he had tested things that came up already. I'll assume that part was next on the list, and it worked. Maybe not the part itself, but the part that could be causing what his scanner was telling him.
To be honest, this car has been somewhat of a disappointment. My previous car was a GEO Tracker. I don't remember how many miles I had on that thing, but it was good to me. I bought it from a guy for $1000 and proceeded to put tons of miles on it with no troubles at all. I finally had to part with it to a guy who just wanted the motor and transmission. The body and frame rot had taken over, and it was basically falling apart to the point it wasn't safe to drive anymore. That was a great car. I miss it. I pulled a three rail trailer with three vintage bikes on it all over New England and New York with that car. I don't go too far from home with this Blazer, and use my 8 miles per gallon truck to haul bikes now.