I have a 2001 bonneville that has 144,000 miles. Two weeks ago my car start sputtering and the check engine light was flashing. So 1 code I keep seeing is 0440. I have turned up the car. New plugs
New plugs and wires. Air filter, new egr
valve, fuel filter and where the spark plugs
go guess the module brand new replaced.
The sputtering stop but the check engine
light won't go away. What else can I do to
fix this issue? I need to pass emissions by
end of this month.