[ssjones]

Wow, thanks for the efforts. Since my OBDII 16 pin connector won't work, I assume it's a 12 pin. I pulled the sensor while the car was still warm, a little PB Blaster did the trick. Used a Bosch sensor, good bit of anti-seize on the threads, with a plastic protector. Guess enough folks didn't remember to coat prior to installation.

Daughter has the car, I'll read the code tomorrow. I used to be able to read flashes on my '93 Nissan NX2000 in a similar manner, I thought there may be a way to do the same on the Buick. Autozone used to give you a key to ground the two pins, no longer available. I had one, but probably tossed it long ago.

If you lived near me, I'd happily let you use my OBDII scan-tool on the laptop. I use Alex Peper's OBD-2 program, it's relatively inexpensive but you need a laptop. It's worked pretty well and has a specific program for my '96 Chevy Impala SS. It must be the 96 model, yeare, which has had more than it's share of CEL's so the program has more than paid for itself. I also had a '96 Firebird Formula with the same LT1 powertrain, but that was less troublesome. I haven't tried it on our new truck but it's read codes on my Honda and parents Subaru.

Thanks again, I'll post what codes I read.
Al