I have a 1998 camaro 3800 engine I just replaced the egr valve now the car will not start. I have tried unplugging the negative battery terminal for about 30 minutes to see if it would make a difference. The car ran before the egr replacement now it will not. What am i doing wrong?

 

1)Does it crank? if yes go to step 2.

2)Next check for fuel and spark its usually one or the other,if thats not it then step 3.

3)Retrace your steps of everything you touched,removed,replaced.