2 Questions
1. Service engine light came on today on my 97 prix se 3800series 2, does that light come on when its due for an oil change? Or do I need to look further?
There has been a wining noise on one of the pulley's for abot 5 min at warm up couldn't diagnose which one yet.

2. I know on my olds I can jump the a & b terminals on the code reader harness and turn key on to get codes are these the same?
Thanks.
Mario