1998 Lumina 3.1 I had codes of p0401 and p0442. I found that the egr valve
> was plugged up just in front of the throttle body. I removed it unplugged
> it and cleaned up everything. Now will someone please tell me how to clear
> this service engine light soon, pleease. The jerks at the parts store will
> read the codes and sell you the parts to fix it but they said they are not
> allowed to clear it???????????? what kind of crap is this?
If the light is still on, something is still needs fixing.
Steve