2001 Chevrolet Blazer Q&A
2001 Chevrolet Blazer Question: Keep getting P0440 code.
you need another smoke test its probly in the fill neck - tdtoolbox
I got 440 code, had a smoke test done, repalced vapor lines. light came back on 3 days later with same p0440 code. had vent valve replaced. light came back on 2 days later. same code again... pleas...