2000 Chevrolet Silverado 1500 Q&A

2000 Chevrolet Silverado 1500 Question: Why is my truck using so much gas. Runs good but has suddenly become a gas guzlr

Warm starts difficult. have to push down on peddle to start. I replaced the throttle censer. New gas filter, new air filter. New gas pump. Really uses a lot of gas. -
Answer 1
check for codes -
Comment 1
I did and it said the rear banks were not normal even after changing the O2 censors. I assume this means the "Y" pipe needs to be changed. -
Comment 2
the converter could be plugging up -
Answer 2
Check fuel pressure and long-term fuel trim.Post specific code #s if available. -