03 Monte Electrical problems Need help!!
 

Hi everyone. I have an 03 monte with a 3.4 having some serious wiring issues.
I dont even know where to start.
Here is whats going on.
OBD2 codes;
1-o2 sensor 1 bank 1 circuit malfunction (even after new o2 sensor)
2-o2 sensor heater sensor 1 bank 1 (again even after new o2 sensor)
3-TCC (torque converter clutch) Circuit stuck on

Also.. The airbag light on the dash stays on all the time, the seatbelt light on the dash does not illuminate even when I just turn the key to Acc. The cruise control does not engage.. the little led light on the cruise button on the wheel lights when you press the cruise button, but when you press set, no engage.
Last but not least, The guy who owned the car before said there was a problem with the radio turning on and off. He installed an aftermarket radio and I havent had a problem with the radio so far.
Is there anyone who is good at auto electrical diagnostics who can point me in some direction? and does anyone know where I could find wire diagrams online for the SRS system? :nono: