06 Silverado poor MPG
Asked by Lman57 Aug 18, 2015 at 06:41 PM about the 2006 Chevrolet Silverado 1500 2LT Crew Cab RWD
Question type: Maintenance & Repair
My 06 Chevy Silverado 5.3L is running great but my MPG has dropped from 16MPG to 10MPG. city. I have 94K miles never had a tuneup this gas MPG dropped suddenly anyone have a idea on what I should do?
8 Answers
firebird338 answered 9 years ago
Add some Lucas Fuel Injector Cleaner to gas tank. Noticed a big difference in my mileage when I used it.
and put a better air filter in it....AND check tall pipe back pressure!!
I have a K & N filter on it are they good and a Magnaflow muffler?
also you can buy another chip that will give you more timming .
but you said... suddenly ...could be a timming chain.
How about getting a tune-up since it has never been done?