06 Silverado poor MPG

Asked by Aug 18, 2015 at 06:41 PM about the 2006 Chevrolet Silverado 1500 LT2 Crew Cab 2WD

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

21,730

Add some Lucas Fuel Injector Cleaner to gas tank. Noticed a big difference in my mileage when I used it.

1 people found this helpful.
30,095

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?

30,095

and the cat/cats

30,095

also you can buy another chip that will give you more timming .

30,095

but you said... suddenly ...could be a timming chain.

81,955

How about getting a tune-up since it has never been done?

1 people found this helpful.

That is what I will do a tune up thanks.

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