My 04 pontiac grand am gt wont start check engine light ,battry light, oil light comes on wheh the igniyion switch is off

SOURCE: Changed thermostat, grand prix gt, check engine light still on?!?

check evap vent solenoid alot stick on these cars.

SOURCE: how to reset the "service engine soon" light on a 2001 pontiac grand prix gt

you can go to advance auto and use there scanner for free to clear the code its called an obd2 connection or when you disconnect your battery you can touch your black negative cable to your red positive cable that connects to the battery and it will completley drain everything and reset but warning you if your trying to get the car through emissions your gonna have to drive the car 50 or 100 miles after you disconnect the battery each time..

SOURCE: 2003 pontiac grand am gt security light is on constant

no way around it need a new ignition switch immobilizer is bad

SOURCE: trac off light comes on a 2003 pontiac grand am

This is the TCS or Traction Control System. It helps keep the vehicle from being able to get stuck by forcing the torque to either tire. Usually there is a switch either on the dash or on the shifter that says TCS or TRAC press the switch and it should go off.

SOURCE: service engine light comes on code po102

P0102 is a MAF SENSOR CODE (MASS AIR FLOW)
i could guess and say replace the MAF sensor
there is an 23 step diagnostic procedure for this code