Check gauges, engine signal comes on, and pinging
I have a 92 Bonnieville SSE without the supercharger, 3.8 liter engine, with 193, 642 miles on it and it has been running well. Recently the check gauges signal, with a picture of the engine, has come on and the car pings from under the dashboard alerting me to a malfunction. However, the temperature gauge reads about 190 degrees, normal, the voltage gauge reads about 13.8 to 14 volts, normal, the oil pressure gauge reads 40 lbs. at idle when warmed up and close to 65 lbs. when cruising at 60 mph, again normal.
The pinging comes on when I accelerate, turn sharply, or deaccelerate. Tfhe oil level is full and the spillover for the radiator is full. The transmission is filled up when hot.
I hate the annoying pinging and if all else fails, can I at least easily disconnect the pinging mechanism. The car is old but still gets better than 25 MPG on the highway
Thanks for your help and slowly going crazy with Ping Ping Ping Ping.